Researcher basic information

• Ph. D, Hokkaido University

• https://researchmap.jp/masahitoyamamoto?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901088476337499
• http://autonomous.jp
• http://gammon.jp/masahito

• 200901088476337499

• Artificial Intelligence
• Meta-heuristics
• Arttificial Life
• Complex Network
• Tourism Informatics

• Informatics, Human interface and interaction
• Informatics, Database
• Informatics, Kansei informatics
• Informatics, Soft computing
• Informatics, Life, health and medical informatics
• Informatics, Intelligent robotics
• Informatics, Perceptual information processing
• Informatics, Intelligent informatics

• Bachelor's degree program, School of Engineering
• Master's degree program, Graduate School of Information Science and Technology
• Doctoral (PhD) degree program, Graduate School of Information Science and Technology

Research activity information

• Dec. 2019, 2019 IEEE Symposium Series on Computational Intelligence Committee, 2019 IEEE SSCI Best Paper Award
  Analysis of Time Series Generated By Long Short-Term Memory Trained with Adversarial Imitation Learning
  Seiya Yamazaki, Hiroyuki Iizuka, Masahito Yamamoto
• Dec. 2018, IES2018実行委員会, IES 2018 Best Paper Award
  Combined Method of YOLO and IOU Tracker for Tracking and Identifying Chimpanzee
  Yuichiro Ikeda, Hiroyuki Iizuka, Masahito Yamamoto
• Oct. 2018, 一般社団法人情報処理学会北海道支部, 情報処理北海道シンポジウム2018 学術研究賞
  敵対的模倣学習におけるカオス時系列の創発要因
  山嵜 聖也,飯塚 博幸,山本 雅人
• Dec. 2016, 公益社団法人計測自動制御学会, 第17回計測自動制御学会システムインテグレーション部門講演会(SI2016)優秀講演賞
  JSPに対するタブーサーチ法におけるタブーリストの長さと解探索性能の関係
  斎藤 渉,横山 想一郎,飯塚 博幸,山本 雅人
• Dec. 2016, 公益社団法人計測自動制御学会, 第17回計測自動制御学会システムインテグレーション部門講演会(SI2016)優秀講演賞
  畳み込みニューラルネット ワークによる局面評価手法を用いたコンピュータ Hex の開発
  高田 圭,本庄 将也,飯塚 博幸,山本 雅人
• Oct. 2015, 一般社団法人情報処理学会北海道支部, 情報処理北海道シンポジウム2015 学術研究賞
  棋譜分析に基づく新規探索手法の提案を目的としたHexアプリケーションの開発
  高田 圭,本庄 将也,飯塚 博幸,山本 雅人
• Mar. 2015, 第14回複雑系マイクロシンポジウム実行委員会, 第14回複雑系マイクロシンポジウム優秀講演賞
  二者間におけるニューロフィードバックトレーニングの提案と訓練効果の検証
  宮澤 初穂,飯塚 博幸,山本 雅人
• Dec. 2014, 公益社団法人計測自動制御学会, 第15回計測自動制御学会システムインテグレーション部門講演会(SI2014)優秀講演賞
  コンピュータHexにおける大域的・局所的観点に基づく局面評価関数の分析
  高田 圭,本庄 将也,飯塚 博幸,山本 雅人
• Dec. 2013, 公益社団法人計測自動制御学会, 第14回計測自動制御学会システムインテグレーション部門講演会(SI 2013)優秀講演賞
  巡回セールスマン問題向け並列粒子群最適化の提案
  本庄将也. 山本雅人, 古川正志
• Oct. 2013, 一般社団法人情報処理学会北海道支部, 情報処理北海道シンポジウム2013学術研究賞
  画像情報を利用した建造物の変化抽出による被災がれき量推定
  利根川凛. 山本雅人, 古川正志
• Dec. 2011, 公益社団法人計測自動制御学会, 第12回計測自動制御学会システムインテグレーション部門講演会(SI2011)優秀講演賞
  複合的人工ニューラルネットワークによる仮想飛翔ロボットの飛翔制御
  大江亮介, 鈴木育男, 山本雅人, 古川正志
• Dec. 2011, 公益社団法人計測自動制御学会, 第12回計測自動制御学会システムインテグレーション部門講演会(SI2011)優秀講演賞
  仮想流体環境における人工生物の形状と移動能力の関係
  中村啓太, 鈴木育男, 山本雅人, 古川正志
• Dec. 2011, 公益社団法人計測自動制御学会, 第12回計測自動制御学会システムインテグレーション部門講演会(SI2011)優秀講演賞
  東日本大震災時のTwitterデータに基づく情報伝搬ネットワークの解析
  小笠原寛弥, 鈴木育男, 山本雅人, 古川正志
• Dec. 2010, 公益社団法人計測自動制御学会, 第11回計測自動制御学会システムインテグレーション部門講演会(SI2010)優秀講演表彰
  同期的構造最適化により創発される振動子ネットワークの特徴解析
  岩根慎司, 鈴木育男, 山本雅人, 古川正志
• 2010, 一般社団法人情報処理学会北海道支部, 情報処理学会北海道支部学術研究賞
  局面ネットワークを利用したHexゲーム戦略の提案
  本庄将也;鈴木育男;山本雅人;古川正志, Japan
• 2009, 情報処理学会北海道支部技術研究賞
  Japan
• 2008, 計測自動制御学会システムインテグレーション部門講演会優秀講演賞
  Japan
• 2005, 情報処理北海道シンポジウム2005 奨励賞
  Japan
• 2004, JAWS2004 合同エージェントワークショップ＆シンポジウム2004論文賞
  Japan
• 2001, 人工知能学会JSAI賞(RoboCup Japan Open)
  Japan
• 2000, 人工知能学会JSAI賞(RoboCup Japan Open)
  Japan

• Building an All-Shot Expected-Score Distribution Model from Real-Match Curling Boards: Shot-Wise Accuracy and Plausibility Analysis
  Rintaro Chiba; Yasumasa Tamura; Shimpei Aihara; Masahito Yamamoto
  Applied Sciences, 16, 14, 10 Jul. 2026
  English, Scientific journal
• Learning Fine-Grained Video Anomaly Detection from Normal Videos.
  Ruqin Wang; Yasumasa Tamura; Masahito Yamamoto
  Sensors (Basel, Switzerland), 26, 13, 07 Jul. 2026, [International Magazine]
  English, Scientific journal
• Extraction of Stone Positions from a Sheet Image for Curling Match Database Construction
  Kei Suzumura; Yasumasa Tamura; Shimpei Aihara; Masahito Yamamoto
  Applied Sciences, 16, 7, 3453, 3453, 02 Apr. 2026
  English, Scientific journal
• Dataset Distillation on Medical Dataset Using Genetic Algorithm
  Takumi Sato; Yasumasa Tamura; Masahito Yamamoto
  SENSORS AND MATERIALS, 38, 6, 3255, 3270, 2026
  English, Scientific journal
• Robust Lung Sound Anomaly Detection Model for Wearable Devices Using Unsupervised Learning and Noise Distinction Algorithm
  Takehiro Hirasawa; Wataru Noguchi; Yasumasa Tamura; Kaoruko Shimizu; Satoshi Konno; Masahito Yamamoto
  SENSORS AND MATERIALS, 38, 6, 3271, 3286, 2026
  English, Scientific journal
• Automated pain assessment based on facial expression of free-moving mice.
  Koji Kobayashi; Naoaki Sakamoto; Yusuke Miyazaki; Masahito Yamamoto; Takahisa Murata
  PNAS nexus, 4, 11, pgaf352, Nov. 2025, [International Magazine]
  English, Scientific journal
• Input Encoding and Data Construction Strategies for Accurate Expected Score Distribution Prediction in Digital Curling
  Rintaro Chiba; Yasumasa Tamura; Shimpei Aihara; Masahito Yamamoto
  2025 IEEE International Workshop on Sport, Technology and Research (STAR), 132, 136, 29 Oct. 2025
  English, International conference proceedings
• Automatic Climbing Move Detection from Fixed-Camera Bouldering Videos Using Pose and Image Features
  Keita Kimura; Yasumasa Tamura; Shimpei Aihara; Masahito Yamamoto
  2025 IEEE International Workshop on Sport, Technology and Research (STAR), 72, 77, 29 Oct. 2025
  English, International conference proceedings
• Long-term scratching analysis of mice using machine learning.
  Koji Kobayashi; Yusuke Miyazaki; Naoaki Sakamoto; Masahito Yamamoto; Nanae Nagata; Takahisa Murata
  PNAS nexus, 4, 9, pgaf292, Sep. 2025, [International Magazine]
  English, Scientific journal
• Pre-training Deep Neural Networks Using 3D Formula-Driven Supervised Learning for COPD Staging
  Yasumasa Tamura; Kohei Harada; Wataru Noguchi; Kaoruko Shimizu; Satoshi Konno; Masahito Yamamoto
  ARTIFICIAL LIFE AND ROBOTICS, 30, 4, 643, 652, 07 Aug. 2025
  English, Scientific journal
• Shared Encoding and Representation of Tool-Mediated and Direct Touch via Superposition Mechanisms
  Haruna Kasashima; Wataru Noguchi; Yasumasa Tamura; Masahito Yamamoto; Hiroyuki Iizuka
  2025 IEEE SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE IN ARTIFICIAL LIFE AND COOPERATIVE INTELLIGENT SYSTEMS, ALIFE-CIS, -, 2025, [Peer-reviewed]
  English, Scientific journal
• Real-Time Isolated Sign Language Recognition
  Noriaki Hori; Masahito Yamamoto
  FRONTIERS OF ARTIFICIAL INTELLIGENCE, ETHICS, AND MULTIDISCIPLINARY APPLICATIONS, FAIEMA 2023, 445, 458, 2024
  English, International conference proceedings
• A Deep Learning Approach to Understanding the Integration of Tools into Body Schema
  Haruna Kasashima; Wataru Noguchi; Yasumasa Tamura; Masahito Yamamoto; Hiroyuki Iizuka
  The 2024 Conference on Artificial Life, MIT Press, 2024
  International conference proceedings
• Creation of Training Data and Training for Prediction Model of Curling Scores Using Real Game Data.
  Tomoya Iwasaki; Wataru Noguchi; Yasumasa Tamura; Shimpei Aihara; Masahito Yamamoto
  icSPORTS, 168, 179, SCITEPRESS, 2024
  International conference proceedings
• Multi-stream Single Network: Efficient Compressed Video Action Recognition with a Single Multi-input Multi-output Network
  Hayato Terao; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  IEEE Access, 12, 1, 1, 2024
  English, Scientific journal
• Acquiring Viewpoint Transformation to Reuse Self Body Image for Other on Self-Organized Internal Spatial Coordinate System
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  2023 IEEE International Conference on Development and Learning (ICDL), 274, 281, 09 Nov. 2023
  English, International conference proceedings
• Learning shared embedding representation of motion and text using contrastive learning
  Junpei Horie; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Artificial Life and Robotics, 28, 1, 148, 157, Feb. 2023
  English, Scientific journal
• Deep-learning-based Multi-behavior Classification of Animals for Efficient Health and Welfare Monitoring
  Ruqin Wang; Wataru Noguchi; Koki Osada; Masahito Yamamoto
  SENSORS AND MATERIALS, 35, 11, 3947, 3968, 2023
  English, Scientific journal
• Detecting Eating Behavior of Elephants in a Zoo Using Temporal Action Localization
  Ken Nishioka; Wataru Noguchi; Hiroyuki Izuka; Masahito Yamamoto
  SENSORS AND MATERIALS, 35, 11, 3927, 3945, 2023
  English, Scientific journal
• Robust Animal Tracking and Stereotypical Behavior Detection Under Real Environment Using Temporal Averaging Background Subtraction.
  Ruqin Wang; Wataru Noguchi; Enzhi Zhang; Koki Osada; Masahito Yamamoto
  Intelligent Systems and Applications - Proceedings of the 2023 Intelligent Systems Conference (IntelliSys), 823, 857, 875, 2023
  English, International conference proceedings
• Efficient Compressed Video Action Recognition Via Late Fusion with a Single Network.
  Hayato Terao; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  IEEE International Conference on Acoustics, Speech and Signal Processing ICASSP 2023(ICASSP), 1, 5, 2023
  English, International conference proceedings
• Re-Evaluation Method by Index Finger Position in the Face Area Using Face Part Position Criterion for Sign Language Recognition.
  Noriaki Hori; Masahito Yamamoto
  Sensors, 23, 9, 4321, 4321, 2023, [International Magazine]
  English, Scientific journal
• Multimodal Plastic Body and Peripersonal Space Representation Developed Through Learning of Visuo-Tactile-Proprioceptive Sensations
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  The 2023 Conference on Artificial Life, MIT Press, 2023
  International conference proceedings
• Compressed video ensemble based pseudo-labeling for semi-supervised action recognition
  Terao Hayato; Noguchi Wataru; Iizuka Hiroyuki; Yamamoto Masahito
  Machine Learning with Applications, 9, 100336, 100336, Sep. 2022, [Peer-reviewed], [Last author]
  English, Scientific journal, 40325105
• Development of Spatial Cognition through Visuomotor Prediction Learning in Deep Neural Networks
  Noguchi Wataru; Iizuka Hiroyuki; Yamamoto Masahito
  SYSTEMS, CONTROL AND INFORMATION, 66, 4, 139, 144, THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS, Apr. 2022, [Invited], [Last author]
  Japanese
• Superposition mechanism as a neural basis for understanding others.
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto; Shigeru Taguchi
  Scientific reports, 12, 1, 2859, 2859, 21 Feb. 2022, [International Magazine]
  English, Scientific journal
• Multi-modal shared module that enables the bottom-up formation of map representation and top-down map reading
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Advanced Robotics, 36, 1-2, 85, 99, 02 Jan. 2022
  English, Scientific journal
• Distributed Autonomous Robotic Systems - 15th International Symposium, DARS 2021, June 1-4, 2021, Online Event.
  DARS, 22, Springer, 2022
  International conference proceedings
• Sign Language Recognition Using the Reuse of Estimate Results by Each Epoch.
  Noriaki Hori; Masahito Yamamoto
  7th International Conference on Frontiers of Signal Processing(ICFSP), 45, 50, IEEE, 2022
  International conference proceedings
• Bottom-up formation of number representation and top-down understanding of symbolic manipulation
  Yasuhiro Shimada; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  The 2022 Conference on Artificial Life, MIT Press, 2022
  International conference proceedings
• Generation of Complex Patterns using Coupled Generative Adversarial Networks
  Hiroyuki Iizuka; Taiki Sasaki; Wataru Noguchi; Masahito Yamamoto
  The 2022 Conference on Artificial Life, MIT Press, 2022
  International conference proceedings
• Gradient Climbing Neural Cellular Automata
  Shuto Kuriyama; Wataru Noguchi; Hiroyuki Iizuka; Keisuke Suzuki; Masahito Yamamoto
  The 2022 Conference on Artificial Life, MIT Press, 2022
  International conference proceedings
• Automated Grooming Detection of Mouse by Three-Dimensional Convolutional Neural Network.
  Naoaki Sakamoto; Koji Kobayashi; Teruko Yamamoto; Sakura Masuko; Masahito Yamamoto; Takahisa Murata
  Frontiers in behavioral neuroscience, 16, 797860, 797860, 2022, [International Magazine]
  English, Scientific journal
• Tsushima Leopard Cat Estrus Sign Detection Using I3D
  HAN Jingwei; ADACHI Itsuki; KOIZUMI Nao; NOGUCHI Wataru; IIZUKA Hiroyuki; YAMAMOTO Masahito
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2021, 1P1-I12, The Japan Society of Mechanical Engineers, Jun. 2021, [Corresponding author]
  Japanese, In recent years, breeding programs for the endangered Tsushima leopard cat are being conducted in various parts of Japan. However, there is a risk of fighting if males and females are allowed to live together during the nonestrus period. Therefore, it is necessary to detect the signs of estrus in advance in order to prevent injuries caused by fighting in the Tsushima leopard cat. However, currently, this is done manually by zookeepers, which requires a great deal of labor. In this study, we aim to automatically recognize the signs of estrus in the Tsushima cat with the cooperation of zoos. We extend the two-stream I3D to detect the estrus behavior from surveillance videos. Our results show that the estrus sign of Tsushima leopard cat can be effectively detected by using I3D.
• Judgment of water transparency in aquariums by deep learning using camera images
  GAO Yi; SATO So; NISHIMURA Kiwamu; NOGUCHI Wataru; IIZUKA Hiroyuki; YAMAMOTO Masahito
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2021, 1P1-I11, The Japan Society of Mechanical Engineers, Jun. 2021, [Corresponding author]
  Japanese, In order for the water purification system to operate efficiently in aquariums according to the real-time water conditions, it is necessary to automatically judge the transparency of water. We trained a convolutional neural network (CNN) model to judge the water transparency from camera images of an aquarium. The images of the aquarium are classified into three categories with respect to the water transparency: clear, little turbid, and turbid. The CNN model was trained to judge the water transparency from the grayscale images converted from the original RGB images. Cross validation within the collected dataset of 48 days was performed to evaluate the CNN's performance, and it was shown that, although the accuracy for the images at transition periods of transparency was slightly low, the trained CNN was able to judge the water transparency with high accuracy.
• バーチャル観光は人を満足させるのか？
  山本 雅人
  観光情報学会誌「観光と情報」, 17, 1, 19, 26, 特定非営利活動法人 観光情報学会, May 2021, [Invited]
  Japanese
• Automated detection of mouse scratching behaviour using convolutional recurrent neural network.
  Koji Kobayashi; Seiji Matsushita; Naoyuki Shimizu; Sakura Masuko; Masahito Yamamoto; Takahisa Murata
  Scientific reports, 11, 1, 658, 658, 12 Jan. 2021, [Peer-reviewed], [International Magazine]
  English, Scientific journal
• Complexity Growth by Cooperative Interaction in Adversarial Learning
  Taiki Sasaki; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the Twenty-Sixth International Symposium on Artificial life and Robotics (AROB2021), 78, 83, Jan. 2021, [Peer-reviewed], [Last author, Corresponding author]
  English
• Multi-agent formation by learning communication signals using DIAL in a distributed multi-agent environment
  Hironobu Horiuchi; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the Twenty-Sixth International Symposium on Artificial life and Robotics (AROB2021), 308, 312, Jan. 2021, [Peer-reviewed], [Last author, Corresponding author]
  English, International conference proceedings
• Learning of Evaluation Function in Digital Curling Considering the Probability of Scores at Each End
  Kotaro Ataka; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of AAAI20 Workshop, Artificial Intelligence in Team Sports, 1, 6, Feb. 2020, [Peer-reviewed], [Last author, Corresponding author]
  English, International conference proceedings
• MixMatch based semi-supervised learning for video action recognition using 3D convolutional neural networks
  Hayato Terao; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the twenty-fifth international symposium on Artificial life and Robotics, 305, 310, Jan. 2020, [Peer-reviewed], [Last author]
  English, International conference proceedings
• Effect of Reactivity Artificial Medaka on Real Medaka
  Katsuki Auchi; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the twenty-fifth international symposium on Artificial life and Robotics, 86, 89, Jan. 2020, [Peer-reviewed], [Last author, Corresponding author]
  English, International conference proceedings
• Reinforcement Learning Method with Internal World Model Training.
  Kenji Hirata; Hiroyuki Iizuka; Masahito Yamamoto
  2020 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 201, 204, 2020, [Peer-reviewed]
  English, International conference proceedings
• Analysis of Time Series Trained by Adversarial Imitation Learning in Discrete State Neural Network Model.
  Seiya Yamazaki; Hiroyuki Iizuka; Masahito Yamamoto
  2020 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 182, 187, 2020, [Peer-reviewed]
  English, International conference proceedings
• Semi-supervised Learning Combining 2DCNNs and Video Compression for Action Recognition.
  Hayato Terao; Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  ICVISP 2020: 4th International Conference on Vision, Image and Signal Processing(ICVISP), 14, 6, ACM, 2020, [Peer-reviewed]
  International conference proceedings
• Complexity of bird song caused by adversarial imitation learning
  Seiya Yamazaki; Hiroyuki Iizuka; Masahito Yamamoto
  Artificial Life and Robotics, 25, 1, 124, 132, 2020, [Peer-reviewed]
  English, Scientific journal
• Analysis of Time Series Generated By Long Short-Term Memory Trained with Adversarial Imitation Learning
  Seiya Yamazaki; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the 2019 IEEE Symposium Series on Computational Intelligence (IEEE SSCI 2019), 224, 228, Dec. 2019, [Peer-reviewed]
  English, International conference proceedings
• 分割した集団の学習による役割分担の獲得
  荒木関 渉; 野口 渉; 飯塚 博幸; 山本 雅人
  情報処理北海道シンポジウム2019, Oct. 2019
  Japanese, Symposium
• Hybrid Synthetic Approach to Animal Interaction
  Hiroyuki Iizuka; Yosuke Nakamoto; Masahito Yamamoto
  Proceedings of the Artificial Life Conference 2019, 50, 51, Jul. 2019, [Peer-reviewed]
  English, International conference proceedings
• Spatial Representation of Self and Other by Superposition Neural Network Model
  Wataru Noguchi; Hiroyuki Iizuka; Shigeru Taguchi; Masahito Yamamoto
  Proceedings of the Artificial Life Conference 2019, 531, 532, Jul. 2019, [Peer-reviewed]
  English, International conference proceedings
• Classification of Customer Behavior in Store Using on 3D Convolutional Neural Networks
  KAIZUKA Yu; IIZUKA Hiroyuki; YAMAMOTO Masahito
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2019, 1A1-M05, The Japan Society of Mechanical Engineers, Jun. 2019
  Japanese, Customer behaviors represent their interests in the products. In recent years, with the spread of security cameras, it has become possible to record the customer behaviors. However, it takes a great amount of time and effort to analyze the recorded customer behaviors manually. Therefore, automation of customer behavior classification is required. The conventional two-stream I3D composed of 3D convolutional neural network can classify the continuous behaviors of trimmed videos. We extend the two-stream I3D to classify the behaviors from untrimmed videos. Our experimental results show improvement of precision, recall, F-measure, and accuracy using majority decision method for behavior classification.
• UAVの空撮画像を利用した産業廃棄物最終処分場の容量推定
  賀川祐太郎; 飯塚博幸; 山本雅人
  第５１回計測自動制御学会北海道支部学術講演会論文集, 51st, 27, 30, Mar. 2019
  Japanese
• Developing Evaluation Function by Deep Reinforcement Learning in the Non-Deterministic Game
  安宅耕太郎; 飯塚博幸; 山本雅人
  第18回複雑系マイクロシンポジウム（CSMS2019）, 62, 65, Mar. 2019
  Japanese, Symposium
• Feature Vector Extraction for Semi-supervised Action Recognition by LSTM Autoencoder
  寺尾颯人; 飯塚博幸; 山本雅人
  第18回複雑系マイクロシンポジウム（CSMS2019）, 25, 30, Mar. 2019
  Japanese, Symposium
• Differentiation of communication signals using Deep Q-Network
  堀内宏信; 飯塚博幸; 山本雅人
  第18回複雑系マイクロシンポジウム（CSMS2019）, 76, 80, Mar. 2019
  Japanese, Symposium
• Special Issue on Machine Learning for Robotics and Swarm Systems.
  Masahito Yamamoto; Takashi Kawakami; Keitaro Naruse
  J. Robotics Mechatronics, 31, 4, 519, 519, 2019
  English, Scientific journal
• Navigation behavior based on self-organized spatial representation in hierarchical recurrent neural network
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Advanced Robotics, 33, 11, 539, 549, 2019, [Peer-reviewed]
  English, Scientific journal
• Reinforcement Learning to Create Value and Policy Functions using Minimax Tree Search in Hex
  Kei Takada; Hiroyuki Iizuka; Masahito Yamamoto
  IEEE transactions on Games, 12, 1, 63, 73, 2019, [Peer-reviewed]
  English, Scientific journal
• Group Decision Making through Behavioral Interaction in Robot Swarm
  Naohiro Shibuya; Hiroyuki Iizuka; Masahito Yamamoto
  2019 IEEE/SICE International Symposium on System Integration (SII2019), 764, 769, 2019, [Peer-reviewed]
  English, International conference proceedings
• Establishing Mutual Interaction between Artificial and Real Medaka
  Yosuke Nakamoto; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the Twenty-Fourth International Symposium on Artificial Life and Robotics (AROB2019), 633, 637, 2019, [Peer-reviewed]
• Mutual learning between human and machine to develop a human-machine interface to operate multi-DOF robots
  Kei Takada; Hiroyuki Iizuka; Subhransu Maji; Masahito Yamamoto
  Proceedings of the Twenty-Fourth International Symposium on Artificial Life and Robotics (AROB2019), 397, 403, 2019, [Peer-reviewed]
  English, International conference proceedings
• Modeling place and head-direction cells self-organized in different environments using recurrent neural networks
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the Twenty-Fourth International Symposium on Artificial Life and Robotics (AROB2019), 67, 72, 2019, [Peer-reviewed]
  English, International conference proceedings
• Adversarial Imitation Learning of Bird Song Modeled with Recurrent Neural Network
  Seiya Yamazaki; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the Twenty-Fourth International Symposium on Artificial Life and Robotics (AROB2019), 162, 167, 2019, [Peer-reviewed]
  English, International conference proceedings
• Curling and Artificial Intelligence (AI)
  YAMAMOTO, Masahito; ITO, Takeshi; MASUI, Fumito; MATSUBARA, Hitoshi
  情報処理学会誌「情報処理」, 59, 6, 500, 504, 情報処理学会, Jun. 2018, [Invited], [Lead author, Corresponding author]
  Japanese, スポーツのカーリングを対象とした，ディジタルカーリングと戦術支援を行うためのカーリングAIの開発について解説を行う．カーリングAI「じりつくん」は，任意の局面に対して，そのエンド終了時の期待得点分布を予測することができ，それに基づいた勝率最大化となるプレイを出力することが可能である．平昌オリンピックでの試合を例にカーリングAIで分析した結果は多くの反響を呼び，カーリングAIが見積もる勝率などの情報は，観戦者の助けとなったり，試合における一進一退の攻防の魅力を伝えたりする有効な手段の1つとなりうることを示した．本稿では，特に「じりつくん」の概要と分析結果を中心に今後の方向性を含めて解説する．
• Reinforcement Learning for Creating Evaluation Function Using Convolutional Neural Network in Hex
  Kei Takada; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings - 2017 Conference on Technologies and Applications of Artificial Intelligence, TAAI 2017, 196, 201, 09 May 2018, [Peer-reviewed]
  English, International conference proceedings
• AI技術の最新技術と今後の展開
  山本 雅人
  環境浄化技術, 2018, 5/6, 1, 4, Apr. 2018, [Invited], [Lead author, Corresponding author]
  Japanese, Scientific journal
• Self-Tuning Neuro-PID Controller for Indoor Entertainment Balloon Robot.
  Hiroya Nagata; Soichiro Yokoyama; Tomohisa Yamashita; Hiroyuki Iizuka; Masahito Yamamoto; Keiji Suzuki; Hidenori Kawamura
  J. Robotics Mechatronics, 30, 3, 390, 396, 2018, [Peer-reviewed]
  English, Scientific journal
• Computer Hex Algorithm Using a Move Evaluation Method Based on a Convolutional Neural Network
  Kei Takada; Hiroyuki Iizuka; Masahito Yamamoto
  Communications in Computer and Information Science, 818, 19, 33, 2018, [Peer-reviewed]
  English, International conference proceedings
• Combined Method of YOLO and IOU Tracker for Tracking and Identifying Chimpanzee
  Yuichiro Ikeda; Hiroyuki Iizuka; Masahito Yamamoto
  The 22nd Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES 2018), 110, 115, 2018, [Peer-reviewed]
  English
• Performance evaluation and internal state analysis of RCNN model in sign language classification
  MATSUDA Keisuke; YAMAMOTO Masahito; IIZUKA Hiroyuki
  Proceedings of the Annual Conference of JSAI, JSAI2018, 2631, 2634, The Japanese Society for Artificial Intelligence, 2018
  Japanese, Sign language is a language used among hearing-impaired people. However, it is not common in our society and not many people can understand sign language. Developing a sign language translator is a big challenge for artificial intelligence. The purpose of this study is to classify sign language words in video as the first step toward sign language translation using deep learning. In sign language, not only hand shape and hand trajectory but also non-manual signals such as facial expression and nodding are important to understand meaning. A sign language translator needs to take into account the whole image of speakers. In this study, we applied the RCNN model which can use the information of the whole image and classified the sign language words.We also examined how input and model structure effect classification accuracy.
• Identifying Individual Chimpanzee with Convolution Neural Networks
  IKEDA Yuuichiro; IIZUKA Hiroyuki; YAMAMOTO Masahito
  Proceedings of the Annual Conference of JSAI, JSAI2018, 93, 95, The Japanese Society for Artificial Intelligence, 2018
  Japanese, The development of information science in recent years has greatly contributed to studies of animal behavior. We are collaborating with Maruyama Zoo in Sapporo to reduce the load on zookeepers taking care of animals using artificial intelligence. One of our targets is to automatically create chimpanzee’s Ethogram for health management and maintenance of breeding environments. Ethogram is an inventory of all behavior patterns of specific individuals and species. In order to create an Ethogram, it is necessary to identify individuals. Therefore, in this research, we examined whether each individual chimpanzee can be recognized using Convolutional Neural Networks ,which has high accuracy in image recognition field. Experimental results showed that it is possible for our system to identify individual chimpanzees.
• Emergence of Chaotic Time Series by Adversarial Imitation Learning
  Seiya Yamazaki; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the 2018 Conference on Artificial Life, 659, 664, 2018, [Peer-reviewed]
  English, International conference proceedings
• Learning of Individual Sensorimotor Mapping to Form Swarm Behavior from Real Fish Data
  Hiroyuki Iizuka; Yosuke Namamoto; Masahito Yamamoto
  Proceedings of the 2018 Conference on Artificial Life, 179, 185, 2018, [Peer-reviewed]
  English, International conference proceedings
• Effect of behavioral complexity on development of spatial recognition
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the 2018 Conference on Artificial Life, 147, 154, 2018, [Peer-reviewed]
  English, International conference proceedings
• Deep Reinforcement Learning Method Enabling Stable Learning in Multi-Agent Environment
  Kenji Hirata; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the 22nd Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES 2018), 163, 168, 2018, [Peer-reviewed]
  English, International conference proceedings
• Differentiation of communication signals to establish cooperation using Deep Q-Network
  Hironobu Horiuchi; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the 22nd Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES 2018), 156, 162, 2018, [Peer-reviewed]
  English, International conference proceedings
• Evolution of communication through differentiation of communicative and goal-directed behaviors
  Naohiro Shibuya; Hiroyuki Iizuka; Masahito Yamamoto
  Artificial Life and Robotics, 23, 2, 225, 240, Dec. 2017, [Peer-reviewed]
  English, Scientific journal
• Development of entertainment balloon robot system for an indoor event venue
  Hiroya Nagata; Stefan Walke; Soichiro Yokoyama; Tomohisa Yamashita; Hiroyuki Iizuka; Masahito Yamamoto; Keiji Suzuki; Hidenori Kawamura
  Artificial Life and Robotics, 23, 2, 192, 199, Dec. 2017, [Peer-reviewed]
  English, Scientific journal
• カーリング研究の科学的アプローチと課題
  河村 隆; 竹川 佳成; 山本 雅人
  電気学会論文誌C, 137, 9, 1137, 1140, Sep. 2017, [Invited]
  Japanese, Scientific journal
• Cognitive map self-organization from subjective visuomotor experiences in a hierarchical recurrent neural network
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  ADAPTIVE BEHAVIOR, 25, 3, 129, 146, Jun. 2017, [Peer-reviewed]
  English, Scientific journal
• Attraction basin sphere estimation approach for niching CMA-ES
  Zhuoran Xu; Hiroyuki Iizuka; Masahito Yamamoto
  SOFT COMPUTING, 21, 5, 1327, 1345, Mar. 2017, [Peer-reviewed], [Invited]
  English, Scientific journal
• Hierarchical recurrent neural network model for goal-directed motion planning using self-organized cognitive map
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  roceedings of the Twenty-Second International Symposium on Artificial Life and Robotics 2017 (AROB 22nd 2017), 73, 78, Jan. 2017, [Peer-reviewed], [Last author]
  English, International conference proceedings
• DCGANにおける潜在空間上の局在配置を用いた画像融合
  西村 亮; 飯塚 博幸; 山本 雅人
  精密工学会学術講演会講演論文集, 2017, 27, 28, 公益社団法人 精密工学会, 2017
  Japanese, DCGANは画像生成モデルの学習手法として注目を集めており，画像の生成には潜在空間上のベクトルを用いる．潜在空間上には学習した画像の特徴が連続的に分布しており，潜在空間上の２点の中間点では2つの画像の特徴を併せもつような画像となる．本研究では既知の画像を潜在空間へ局在配置させる学習を行い，潜在空間と生成画像を関係づけることで異なる性質の画像の融合を試みる．
• Morphological Evolution of Soft Robots by Age-Fitness Pareto Optimization
  Ogawa Jun; Iizuka Hiroyuki; Yamamoto Masahito
  Proceedings of JSPE Semestrial Meeting, 2017, 15, 16, The Japan Society for Precision Engineering, 2017
  Japanese, Morphological evolution in evolutionary robotics is an important approach for discovering new robot systems and developmental histories of many creatures. Conventional evolutionary robotics used a rigid-bodied robot by human design in computer simulation to verify the effective robotic control systems. However, it is hard to apply the findings of the conventional evolutionary robotics approaches into the development of a real robot like a creature from the evolved robot because there is major difference between the dynamics of the virtual robot and the real robot. In this work, we propose a new method for evolving more complex and controllable soft-bodied robots without some developmental biases in order to get some innovative robotic findings by using the evolved virtual robot. This work found that the evolved soft-bodied robots have more versatility than most of conventional rigid-bodied robots and they got a lot of unintentional morphologies and behavior control systems like real creatures.
• Mobile Robot Localization from First Person View Images based on Recurrent Convolutional Neural Network
  SUGINAKA Izuho; IIZUKA Hiroyuki; YAMAMOTO Masahito
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2017, 2P2, F02, The Japan Society of Mechanical Engineers, 2017
  Japanese, Scientific journal,

  Many robots are pervading environments of human daily life. It is crucial for those robots to estimate the current self-positions. This is called robot localization. In this paper, we propose a method using a recurrent convolutional neural network (RCNN), which is known as one of deep learning, to achieve robot localization. RCNN is a neural network model that has a convolutional architecture known as CNN with recurrent nodes. We train RCNN to estimate the current position of a robot from the view images of the first person perspectives. Our experimental results show that the estimation error decrease when the successive view images are given and it can estimate the current position accurately.

• Self-Localization and Area Search of Swarm-Robot with Self Organization
  IWADATE Kenji; SUZUKI Ikuo; WATANABE Michiko; YAMAMOTO Masahito; FURUKAWA Masashi
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2017, 2A1, G11, The Japan Society of Mechanical Engineers, 2017
  Japanese,

  This study proposed a self organizing method to localize self position and to define the final destination for area search of swarm-robot without any bird's-eye camera or landmark. Simulation results showed that robots searched an area with only ID and distance, and they covered the area uniformly.

• Robustness of Mobile Robot Localization using Recurrent Convolutional Neural Network
  Izuho Suginaka; Hiroyuki Iizuka; Masahito Yamamoto
  2017 21ST ASIA PACIFIC SYMPOSIUM ON INTELLIGENT AND EVOLUTIONARY SYSTEMS (IES), 1, 95, 100, 2017, [Peer-reviewed], ［Internationally co-authored］
  English, Scientific journal
• Reproduction of swarm behavior by learning individual rules using neural network.
  Yosuke Nakamoto; Hiroyuki Iizuka; Masahito Yamamoto
  2017 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 847, 852, 2017, [Peer-reviewed]
  English, International conference proceedings
• The development of spatial recognition and navigation in hierarchical recurrent neural network with convolution processing.
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  FOURTEENTH EUROPEAN CONFERENCE ON ARTIFICIAL LIFE (ECAL 2017), 324, 331, 2017, [Peer-reviewed]
  English, International conference proceedings
• Increasing Stability of Human Interaction Against Time Delay on Perceptual Crossing Experiment
  Sohtaroh Saitoh; Hiroyuki Iizuka; Masahito Yamamoto
  INTELLIGENT AND EVOLUTIONARY SYSTEMS, IES 2016, 8, 361, 369, 2017, [Peer-reviewed]
  English, International conference proceedings
• Evolution of Swarm Formation Using Homogeneous Multi-Robots
  Naohiro Shibuya; Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of The 2nd International Symposium on Swarm Behavior and Bio-Inspired Robotics, 128, 133, 2017, [Peer-reviewed]
  English, International conference proceedings
• A Method of Game Tree Search in Digital Curling Including Uncertainty
  加藤修; 飯塚博幸; 山本雅人
  情報処理学会論文誌ジャーナル(Web), 57, 11, 2354‐2364 (WEB ONLY), YM003440, 情報処理学会, Nov. 2016, [Peer-reviewed]
  Japanese, Scientific journal, 二人零和有限確定完全情報ゲームにおいてすでにAIは人間に匹敵する強さとなっており，最近では麻雀や人狼など，多人数ゲーム，不完全情報ゲーム，不確定ゲームが新たな研究対象として注目を集めている．そのような中で不確定ゲームとしてデジタルカーリングがある．デジタルカーリングはカーリングの二人用コンピュータゲームであり，AIどうしを競わせカーリングの戦略を解析することを目的とした不確定ゲームのテストベッドとして開発された．本研究ではデジタルカーリングにボードゲームの探索手法を適用し，投球目標座標と回転方向を候補手，盤面状態を局面としてデジタルカーリングにExpectimaxによるゲーム木探索を適用する手法を提案する．Expectimaxではゲーム木内で確率的に推移するノードを用いており，ゲームの不確定性を考慮した探索が可能となっている．提案手法の有効性を検証するため，不確定性を考慮する場合としない場合それぞれにおいて探索の深さを変化させ既存AIとの対戦実験を行った．その結果，提案手法による不確定性の考慮を行った場合に勝率が上昇し，また不確定性を考慮した場合のみ探索の深さを増やすことで勝率が上昇したことから，デジタルカーリングにおける提案手法による不確定性を考慮した先読みの有効性が明らかとなった．
  Computer AI game players have beaten human expert players in two players zero-sum perfect information games such as Go and Japanese Chess and the focus is moving to multiple players, imperfect information games and even with uncertainty such as Mah-jong and Werewolf. Digital curling is one of the games with uncertainty. It has been developed as a testbed of the games with uncertainty to compete computer AI programs and to analyze the curling strategies of human players. This paper proposes an expectimax game tree search method for the digital curling where candidate moves are represented as the combination of the throwing-target position and rotational direction of stones and the discretized board states are nodes of the tree. The method can take into account uncertainty using stochastic transition in the game tree. To evaluate our proposed method, we compare the winning rates of the methods with and without the stochasticity while changing the searching depth. Our results show that our proposed method with the stochasticity is better than without the stochasticity and can only show the effective look ahead. From those results, it is shown that our proposed method could handle uncertainty and perform effective tree search on digital curling.
• Detecting Collapsed Buildings using Convolutional Neural Network for Estimating the Disaster Debris Amount
  利根川凜; 飯塚博幸; 山本雅人; 古川正志; 大内東
  情報処理学会論文誌ジャーナル(Web), 57, 6, 1565‐1575 (WEB ONLY), YM003440, Jun. 2016, [Peer-reviewed]
  Japanese, Scientific journal, 津波の被害に代表される大規模な家屋の倒壊が起こる災害時において，被災状況を把握できずに起きる復旧の遅延が問題となっている．津波により建造物の倒壊が起こり大量のがれきが発生すると，早急に輸送手段や仮置き場の位置や数の手配が必要になる．しかしながら，現状では被災地での被害状況の把握，被災がれき量の推定について短時間で行う手法は確立されていない．本研究では，震災後に撮影される被災地の空撮画像を複数用い，被災地の地図情報から家屋のある範囲を抽出し，畳み込みニューラルネットワークによる学習から，家屋倒壊判別を行う．結果として，東日本大震災で被災地となった10地域の空撮画像を利用し，約86%の正答率を得た．また，使用地域の中で，テストデータの判別正答率の悪かった地域のみをテストデータに絞った場合でも判別を行い，前実験の結果と比較して，より多くの地域，および，条件の画像データを用意すれば，判別器の正答率が向上する可能性を示した．When a massive earthquake that causes Tsunami happens, it is too difficult to get a full picture of the damages caused by the disaster and it causes the delay to recover from it. The debris generated by Tsunami or broken houses block roads and all transportation for people, rescue supply and bringing debris stop. In order to remove the debris and clear the roads, we need to decide which and how many spaces should be allocated for temporal storages immediately. However, there is no method to estimate the amount of generated debris and to get a full picture of the damage for a short time. This paper proposes a novel method that uses a convolutional neural network to classify images taken by a plane into damage or no-damage automatically. The network is trained with the images of 10 different areas stricken by the Great East Japan Earthquake. Our results shows that the trained network can correctly answer with about 86% and we found that the correct rates changes in response to the extents of the damages in different areas. The possibility to create a better network classifier is discussed in the end.
• Proposing multimodal integration model using LSTM and autoencoder
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto
  BICT 2015 - 9th EAI International Conference on Bio-Inspired Information and Communications Technologies, 3, 10, e1, 1, Association for Computing Machinery, Inc, 24 May 2016, [Peer-reviewed]
  English, International conference proceedings
• Establishing interaction between machine and medaka using deep Q-Network
  Ryo Nishimura; Hiroyuki Iizuka; Masahito Yamamoto
  BICT 2015 - 9th EAI International Conference on Bio-Inspired Information and Communications Technologies, 3, 9, e3, YM003440, Association for Computing Machinery, Inc, 24 May 2016, [Peer-reviewed]
  English, International conference proceedings
• Mutual Learning Interface using the Segmentation of Actons
  Saitoh Kentaro; Iizuka Hiroyuki; Yamamoto Masahito
  Proceedings of JSPE Semestrial Meeting, 2016, 575, 576, The Japan Society for Precision Engineering, 2016
  Japanese, ロボットの構造が複雑になるにつれて，操縦するためのインタフェースも複雑なものとなり，ユーザは複雑な操縦方法の学習を強いられる．本研究では人間の学習負荷が低い簡易なインタフェースにもかかわらず，複雑な構造のロボットを操縦できるインタフェースの作成手法を提案する．動作の分節化を利用して複数のインタフェースを切り替えて学習を行うことで，さまざまな動作を可能とするインタフェースを構築し評価する．
• Proceedings in Adaptation, Learning and Optimization.
  Sohtaroh Saitoh; Hiroyuki Iizuka; Masahito Yamamoto
  Intelligent and Evolutionary Systems - The 20th Asia Pacific Symposium(IES), 361, 369, Springer, 2016
  International conference proceedings
• 巡回セールスマン問題に対する粒子群最適化の提案と性能評価
  本庄将也; 飯塚博幸; 山本雅人; 古川正志
  知能と情報(Web), 28, 4, 744‐755(J‐STAGE), YM003440, Japan Society for Fuzzy Theory and Intelligent Informatics, 2016, [Peer-reviewed]
  Japanese, Scientific journal, In this paper, we propose a new Traveling Salesman Problem (TSP) solver based on Particle Swarm Optimization (PSO) Algorithm. PSO is one of the optimization methods classified into swarm intelligence, and consists of particles. Particles interact and move through solution space to find a better solution. PSO can find a good solution in a short time compared with Genetic Algorithm (GA) in many real-valued optimization problems. Because TSP is a combinatorial optimization problem, we change two points of the original PSO for solving TSP. The first point is that the position of each particle is represented by a tour instead of a vector. The second is that particles move by using Insertion method. Insertion method is an operation to combine a tour and sub-paths of other two tour. We analyze relation between parameters and length of an obtained tour, and indicate a guide to adjust parameters. The performance comparison result shows that the proposed method can find a better solution than Simulated Annealing (SA) and GA.
• A novel approach to quantitative evaluation of tangle formations for seaweeds in stirrer cultivation
  Jun Ogawa; Hiroyuki Iizuka; Masahito Yamamoto; Masashi Furukawa
  Journal of Robotics and Mechatronics, 28, 1, 40, 49, 2016, [Peer-reviewed]
  English, Scientific journal
• Twist-State Classifier for Floating Marine Biomass Based on Physical Simulation
  Jun Ogawa; Hiroyuki Iizuka; Masahito Yamamoto; Masashi Furukawa
  INTELLIGENT AUTONOMOUS SYSTEMS 13, 302, 821, 830, 2016, [Peer-reviewed]
  English, International conference proceedings
• Establishing Interaction between Machine and Medaka using Deep Q-Network
  Nishimura Ryo Iizika Hiroyuki; Yamamoto Masahito
  Proceeding of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (BICT 2015), Dec. 2015, [Peer-reviewed]
  English, Scientific journal
• Proposing Multimodal Integration Model Using LSTM and Autoencoder
  Noguchi Wataru Iizuka Hiroyuki; Yamamoto Masahito
  Proceedings of the 9th EAI International Conference on Bio-inspired Information and Communications Technologies (BICT 2015), Dec. 2015, [Peer-reviewed]
  English, Scientific journal
• Developing evaluation function of hex using board network characteristics and SVM
  Takada Kei; Honjo Masaya; Iizuka Hiroyuki; Yamamoto Masahito
  Transactions of the Japanese Society for Artificial Intelligence, 30, 6, 729, 736, Japanese Society for Artificial Intelligence, 27 Oct. 2015, [Peer-reviewed]
  Japanese, Scientific journal
• Proposing storage location assignment using self-organizing map on network topology
  Kenichi Minami; Hiroyuki Iizuka; Masashi Furukawa; Masahito Yamamoto
  Transactions of the Japanese Society for Artificial Intelligence, 30, 6, 737, 744, Japanese Society for Artificial Intelligence, 27 Oct. 2015, [Peer-reviewed]
  Japanese, Scientific journal
• Time delay effect on social interaction dynamics
  Hiroyuki Iizuka; Sohtaroh Saitoh; Davide Marocco; Masahito Yamamoto
  HAI 2015 - Proceedings of the 3rd International Conference on Human-Agent Interaction, 217, 219, Association for Computing Machinery, Inc, 21 Oct. 2015, [Peer-reviewed]
  English, International conference proceedings
• Time delay effect on social interaction dynamics
  Hiroyuki Iizuka; Sohtaroh Saitoh; Davide Marocco; Masahito Yamamoto
  HAI 2015 - Proceedings of the 3rd International Conference on Human-Agent Interaction, 217, 219, Association for Computing Machinery, Inc, 21 Oct. 2015, [Peer-reviewed]
  English, International conference proceedings
• Water Flow Control for Inhibiting Seaweed Twist in Real Environment and Physical Simulation
  Jun Ogawa; Hiroyuki Iizuka; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the Twentieth International Symposium on Artificial Life and Robotics (AROB 20th 2015), 291, 296, Oct. 2015, [Peer-reviewed]
  English, Scientific journal
• Discriminating Social Behavior of Guppy Swarm by Convolutional Neural Network
  Kota Tomine; Wataru; Noguchi Hiroyuki Iizuka; Masahito Yamamoto
  Proceedings of the First International Symposium on Swarm Behavior and Bio-Inspired Robotics, 414, 417, Oct. 2015, [Peer-reviewed]
  English, International conference proceedings
• 観光情報学と観光情報学会の取り組み
  川村 秀憲; 山本; 雅人; 鈴木; 恵二; 松原 仁
  サービソロジー, 1, 4, 36, 41, Society for Serviceology, Oct. 2015, [Peer-reviewed]
  Japanese
• Application of local clustering organization to reactive job-shop scheduling
  Yasumasa Tamura; Hiroyuki Iizuka; Masahito Yamamoto; Masashi Furukawa
  SOFT COMPUTING, 19, 4, 891, 899, Apr. 2015, [Peer-reviewed]
  English, Scientific journal
• ミニマックス法に基づく報酬伝搬を用いたモンテカルロ木探索法
  三橋 允; 飯塚 博幸; 山本 雅人
  精密工学会学術講演会講演論文集, 2015, 755, 756, 公益社団法人 精密工学会, 2015
  Japanese, ゲーム木探索の中でもランダムなシミュレーションを繰り返すことで近似的な評価値を得るモンテカルロ木探索法と呼ばれる手法が存在する。しかしランダム性故に現実にはまず起こり得ないシミュレーション結果も評価に含まれてしまうことがあるため、数手に渡り正確な読みが必要となる局面は苦手とされている。そこでシミュレーション結果（報酬）をミニマックス的に伝搬することで、末端の情報を活用し評価精度の向上を目指す。
• 畳み込みニューラルネットワークを用いた群行動の分類
  遠峰 孝太; 飯塚 博幸; 山本 雅人
  精密工学会学術講演会講演論文集, 2015, 923, 924, 公益社団法人 精密工学会, 2015
  Japanese, 群で生活する動物は蟻や魚等，数多く存在する．種により群の形態は様々であるが，同じ種の群の違いは一見するとわかりにくい．本研究では，群の全体的な振る舞いの違いが機械学習によって分類可能かどうかを検証する．分類器には，画像認識において高い成果を得ている畳み込みニューラルネットワークを動画が扱えるように拡張したものを用いて動画データから群のパターンの違いを識別することが有用であるかを検証する．
• ゲーム木探索に基づくカーリングAIの開発
  加藤 修; 飯塚 博幸; 山本 雅人
  精密工学会学術講演会講演論文集, 2015, 915, 916, 公益社団法人 精密工学会, 2015
  Japanese, カーリングは氷上のチェスと呼ばれる戦略性の高いゲームである．また，確率的要素を持ち，取り得る手と局面が無限に存在するゲームの研究材料として注目されている．近年，カーリングシミュレータが開発され，カーリングの戦略を解析することが可能となった．本研究では，実際の試合における時間的制約を考慮したゲーム木探索に基づくカーリングAIを開発し，その有効性をシミュレーションにより検証する．
• Priority Rule-Based Construction Procedure Combined with Genetic Algorithm for Flexible Job-Shop Scheduling Problem.
  Soichiro Yokoyama; Hiroyuki Iizuka; Masahito Yamamoto
  JACIII, 19, 6, 892, 899, 2015, [Peer-reviewed]
• Extended Local Clustering Organization with Rule-Based Neighborhood Search for Job-shop Scheduling Problem
  Tamura Yasumasa Iizuka Hiroyuki; Yamamoto Masahito
  Proceedings of the 18th Asia Pacific Symposium on Intelligent and Evolutionary Systems, 2, 465, 477, 2015, [Peer-reviewed]
  English, International conference proceedings
• Digital Curling Strategy based on Game Tree Search
  Masahito Yamamoto; Shu Kato; Hiroyuki Iizuka
  2015 IEEE CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND GAMES (CIG), 474, 480, 2015, [Peer-reviewed]
  English, International conference proceedings
• Applying homeostatic neural controller to multi-legged robot and adaptivity to novel disruptions
  Iizuka Hiroyuki; Nakai Hiroki; Yamamoto Masahito
  Proceedings of the European Conference on Artificial Life 2015, 264, 270, 2015, [Peer-reviewed]
  English, International conference proceedings
• Developing Computer Hex Using Global and Local Evaluation Based on Board Network Characteristics
  Kei Takada; Masaya Honjo; Hiroyuki Iizuka; Masahito Yamamoto
  ADVANCES IN COMPUTER GAMES, ACG 2015, 9525, 235, 246, 2015, [Peer-reviewed]
  English, International conference proceedings
• Priority rule-based construction procedure combined with genetic algorithm for flexible job-shop scheduling problem
  Soichiro Yokoyama; Hiroyuki Iizuka; Masahito Yamamoto
  Journal of Advanced Computational Intelligence and Intelligent Informatics, 19, 6, 892, 899, 2015, [Peer-reviewed]
  English, Scientific journal
• Application of local clustering organization to reactive job-shop scheduling
  Yasumasa Tamura; Hiroyuki Iizuka; Masahito Yamamoto; Masashi Furukawa
  Soft Computing, 19, 4, 891, 899, Springer Verlag, 2015, [Peer-reviewed], [Invited]
  English, Scientific journal
• Attraction basin sphere estimating genetic algorithm for neuroevolution problems
  Zhuoran Xu; Hiroyuki Iizuka; Masahito Yamamoto
  Artificial Life and Robotics, 19, 4, 317, 327, 10 Dec. 2014, [Peer-reviewed]
  English, Scientific journal
• ネットワーク指標を用いたコンピュータHex戦略の開発
  高田 圭; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  情報処理学会論文誌, 55, 11, 2421, 2430, 一般社団法人情報処理学会, 15 Nov. 2014, [Peer-reviewed]
  Japanese, Scientific journal, The game of Hex is the board game with simple rules and is classified as a two-player, zero-sum, logical perfect information game. The game proceeds by players putting their pieces in turn on empty cells of the board. A player wins if player connects the two opposing sides of the board of their own color their pieces. The study of computer Hex is popular enough that there is an international tournament of computer Hex. The electrical circuit model is a well-known method to evaluate boards in conventional studies. The present study investigates an evaluation method using network characteristics obtained from the board, in order to capture board states from different perspectives. To clarify the relation between the network characteristics and Hex strategies, game records by human experts were used. As a result, we found that the averages of shortest path lengths and betweenness centrality show a relationship in the winner's records. Therefore, we propose a novel evaluation function using these two network characteristics and evaluate its effectiveness. Our results shows that it is possible to develop a strong computer hex program using these network characteristics.
• 筋骨格モデルを用いた筋構造と適応行動の共進化
  松林 涼平; 飯塚; 博幸; 山本 雅人
  第24回インテリジェント・システム・シンポジウム(FAN2014)講演論文集, 2014(24), 210, 213, 日本機械学会, 18 Sep. 2014, [Peer-reviewed]
  Japanese, 収集根拠 : NII-ELS
  資料形態 : テキストデータ
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会
  著者所属: 北海道大学
  Affiliation: Hokkaido University
  レポート・講演番号: FAN-14-048
• 自己組織化マップを用いた商品配置法におけるパラメータの最適化
  南 賢一; 飯塚; 博幸; 山本 雅人
  第24回インテリジェント・システム・シンポジウム(FAN2014)講演論文集, 2014(24), 152, 155, 日本機械学会, 18 Sep. 2014, [Peer-reviewed]
  Japanese, 収集根拠 : NII-ELS
  資料形態 : テキストデータ
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会
  著者所属: 北海道大
  Affiliation: Hokkaido University
  レポート・講演番号: FAN-14-034
• 蔵本モデルを用いた鳥群行動のモデル化
  家登 亮多; 飯塚; 博幸; 山本 雅人
  第24回インテリジェント・システム・シンポジウム(FAN2014)講演論文集, 2014(24), 100, 103, 日本機械学会, 18 Sep. 2014, [Peer-reviewed]
  Japanese, 収集根拠 : NII-ELS
  資料形態 : テキストデータ
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会
  著者所属: 北海道大
  Affiliation: Hokkaido University
  レポート・講演番号: FAN-14-022
• Estimation of seaweed twist based on diffusion kernels in physical simulation
  Jun Ogawa; Masahito Yamamoto; Masashi Furukawa
  Journal of Advanced Computational Intelligence and Intelligent Informatics, 18, 5, 823, 829, 01 Sep. 2014, [Peer-reviewed]
  English, Scientific journal
• 割付け規則を用いた遺伝的局所探索によるJSPの解法
  田村 康将; 飯塚; 博幸; 山本 雅人
  日本オペレーションズ・リサーチ学会2014年秋季研究発表会アブストラクト集, 2014, 66, 67, 公益社団法人日本オペレーションズ・リサーチ学会, 28 Aug. 2014, [Peer-reviewed]
  Japanese
• ニューラルネットワークとメタヒューリスティクス
  山本 雅人
  日本オペレーションズ・リサーチ学会2014年秋季シンポジウム, 72, 39, 48, 公益社団法人日本オペレーションズ・リサーチ学会, 27 Aug. 2014, [Peer-reviewed]
  Japanese
• 人間と機械の相互作用による共創造型インタフェースの構築
  飯塚 博幸; 斎藤; 健太郎; 山本 雅人
  電子情報通信学会技術研究報告ー第13回クラウドネットワークロボット研究会, 114, 85, 17, 22, 東京 : 電子情報通信学会, 16 Jun. 2014, [Peer-reviewed]
  Japanese
• Hybrid genetic algorithm with priority rule-based reconstruction for flexible job-shop scheduling
  Soichiro Yokoyama; Hiroyuki Iizuka; Masahito Yamamoto
  2014 Joint 7th International Conference on Soft Computing and Intelligent Systems, SCIS 2014 and 15th International Symposium on Advanced Intelligent Systems, ISIS 2014, 749, 754, 18 Feb. 2014, [Peer-reviewed]
  English, International conference proceedings
• FAN-14-009 Morphological Evaluation of Oropharyngeal Soft Tissues in Upper Airway MR Images for Automatic Classification of Severe Obstructive Sleep Apnea Syndrome
  MIKAMI Tsuyoshi; YONEZAWA Kazuya; KOJIMA Yohichiro; YAMAMOTO Masahito
  第24回インテリジェント・システム・シンポジウム(FAN2014)講演論文集, 2014, 24, 42, 45, The Japan Society of Mechanical Engineers, 2014, [Peer-reviewed]
  Japanese, 収集根拠 : NII-ELS
  資料形態 : テキストデータ
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > 学術機関 > 学協会
  著者所属: 苫小牧高専
  著者所属: 国立病院機構函館病院
  著者所属: 北海道大学
  Affiliation: NIT Tomakomai College
  Affiliation: NHO Hakodate Hospital
  Affiliation: Hokkaido University
  レポート・講演番号: FAN-14-009
• 被災がれき量推定に向けた画像情報を利用した建造物の倒壊判定
  利根川; 凛; 飯塚; 博幸; 山本; 雅人; 古川; 正志; 大内 東
  2014年度精密工学会秋季大会学術講演会講演論文集, 2014A, 743, 744, The Japan Society for Precision Engineering, 2014, [Peer-reviewed]
  Japanese, 大規模な家屋の倒壊を含む災害時において，被災地への交通手段が途絶えるなどが原因で被災状況を把握できないことが問題となっている．特に，大量のがれきが発生した場合，早急に輸送手段や仮置き場の手配が必要となる．現状では被災がれき量の推定を短時間で行うことはほぼ不可能である．本研究では，震災後の航空写真の画像データから，家屋倒壊に基づく特徴量から家屋倒壊を判別することで，被災地のがれき量を推定する．
• Hexゲーム戦略におけるUCT探索法の適切なゲーム木展開条件の解析
  三橋 允; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  2014年度精密工学会秋季大会学術講演会講演論文集, 2014A, 739, 740, The Japan Society for Precision Engineering, 2014, [Peer-reviewed]
  Japanese, Hexというボードゲームはシンプルだが奥が深く，現在，必勝手順の探索やコンピュータHex（コンピュータプレイヤ）などの研究が行われている．コンピュータHexに用いられる探索法の中でも，特にUCT探索は優れた結果を残している．UCT探索にはゲーム木展開条件というパラメータが存在するが，展開条件に関する既存研究は少なく，適切な条件は分かっていない．本研究では適切な展開条件の解析を行い，コンピュータHexによる性能評価を行う．
• 人間と機械の相互学習によるロボット操縦インタフェースの作成
  齋藤 健太郎; 飯塚; 博幸; 山本 雅人
  2014年度精密工学会秋季大会学術講演会講演論文集, 2014A, 69, 70, The Japan Society for Precision Engineering, 2014, [Peer-reviewed]
  Japanese, ロボットの構造が複雑になるにつれて，操縦するためのインタフェースも複雑なものとなり，ユーザである人間には複雑な操縦方法の学習が強いられる．本研究では人間の学習負荷が低い簡易なインタフェースにもかかわらず，複雑な構造のロボットを操縦できるインタフェースの作成手法を提案する．人間と機械が相互に学習を行う提案手法により．ユーザに適応したインタフェースが作成可能であることを評価実験によって明らかにする．
• 災害廃棄物量推定のための空撮画像内の直線検出を利用した建造物の自動倒壊判定
  利根川; 凛; 飯塚; 博幸; 山本; 雅人; 古川; 正志; 大内 東
  第25回廃棄物資源循環学会研究発表会講演原稿集, 25, 109, 110, Japan Society of Material Cycles and Waste Management, 2014, [Peer-reviewed]
  Japanese, 大規模な家屋の倒壊を含む災害時において，被災地への交通手段が途絶えるなどが原因で被災状況を把握できないことが問題となっている。特に，津波などが原因で大量のがれきが発生した場合，早急に輸送手段や仮置き場の手配をする必要がある。しかし，現状では被災地の範囲が大規模になるほど，被害状況の把握，被災がれき量の推定について短時間で行うことは困難な問題となる。そこで本研究では，震災後の航空写真の画像データ，および，被災地の建造物の位置や大きさを参照可能な地図データから，家屋のある範囲に注目し，線分抽出を行うことで，倒壊した建造物を特定し，倒壊した建造物より発生するがれき量を推定する。また，本提案手法が倒壊，または，非倒壊と判断した建造物について，当該建造物の実際の被害と比較し，正当性の評価，および，考察をおこなう。
• ジョブショップ問題の重み付き納期遅れ最小化に対する割付け規則を用いた近似解法の提案
  横山 想一郎; 飯塚; 博幸; 山本 雅人
  日本オペレーションズ・リサーチ学会2014年秋季研究発表会アブストラクト集, 2014, 68, 69, 公益社団法人日本オペレーションズ・リサーチ学会, 2014, [Peer-reviewed]
  Japanese
• 形態進化におけるタスク難易度と進化戦略
  岩館 健司; 鈴木; 育男; 渡辺; 美知子; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2014講演論文集 (Robomec 2014), 2014, _1A1-X05_1, _1A1-X05_2, The Japan Society of Mechanical Engineers, 2014, [Peer-reviewed]
  Japanese, In this work, we considered the influence of task complexity in the shape evolution of the locomotive robot. Robots were evolved in a virtual physical environment for achieving various tasks. Acquired shapes of robots were classified in 4 types according to the number of legs.
• 海洋バイオマスの運動制御に向けた絡み状態評価指標の設計
  小川 純; 飯塚; 博幸; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2014講演論文集 (Robomec 2014), 2014, _1A1-K06_1, _1A1-K06_4, The Japan Society of Mechanical Engineers, 2014, [Peer-reviewed]
  Japanese, Twist of seaweeds is one of the physical problems that disturb the growth of the seaweeds in the marine biomass cultivation. This study aims to evaluate the twist of seaweeds in a quantitative way. There is no computational model to simulate dynamics of the twist of seaweeds. In this study, we create the physical model of the seaweeds using physics simulation and the states between seaweed individuals are characterized with feature vectors, which is composed the physical, geometrical, and time factors. The measure of twist can be defined as the number of features and classifies a state between individuals into "twist state" or "non-twist state".
• JSP に対する遺伝的アルゴリズムと割付け規則に基づく 近似解法の提案
  田村 康将; 飯塚; 博幸; 山本 雅人
  ロボティクス・メカトロニクス講演会2014講演論文集 (Robomec 2014), 2014, _1A1-L03_1, _1A1-L03_4, The Japan Society of Mechanical Engineers, 2014, [Peer-reviewed]
  Japanese, The job-shop scheduling problem (JSP) is one of the combinatorial optimizations and one of the most difficult order decision problems. Many approximate algorithms, which are heuristic methods or metaheuristics, are studied to solve JSP, because JSP is categorized into NP-hard problems. The application of the dispatching rules is known as a practical heuristic for JSP or many other scheduling problems. This study proposes an extended algorithm for JSP based on the genetic algorithm and a novel local search method using the dynamic dispatching rules. The extended algorithm searches for effective dispatching rules along with schedules according to the genetic algorithm. Also the schedules are partially modified by the rules in every generation. In order to verify the effectiveness of the proposed algorithm, this paper shows the result of numerical experiments.
• JSP に対する部分的な割り付け規則の適用による局所探索法の提案
  横山 想一郎; 飯塚; 博幸; 山本 雅人
  ロボティクス・メカトロニクス講演会2014講演論文集 (Robomec 2014), 2014, _1A1-L01_1, _1A1-L01_4, The Japan Society of Mechanical Engineers, 2014, [Peer-reviewed]
  Japanese, Job-shop Scheduling Problem (JSP) is one of the representative combinatorial optimization problems where the objective is to find an ideal assignment of resources when multiple tasks must be processed simultaneously. Many heuristic methods for the JSP has been proposed. Among them, dispatching rules can provide a feasible schedule within a relatively short time. However, the obtained schedule is usually insufficient and further improvement by other heuristics is needed. Sub-problem is defined by assignments of resources within an arbitrary selected time window and rule-based reconstruction is performed by solving the sub-problem with a dispatching rule. An approprate set of time window and dispatching rule is obtained by genetic algorithm. This rule-based reconstruction procedure is combined with tabu search algorithm. The experiments are shows that the proposed algorithm performs better than an existing heuristic method when the number of tasks is much larger than the number of resources.
• 自律行動を行う仮想ロボットの行動獲得
  大江 亮介; 飯塚; 博幸; 山本 雅人
  2014年度精密工学会春季大会学術講演会講演論文集, 2014S, 1065, 1066, 公益社団法人 精密工学会, 2014, [Peer-reviewed]
  Japanese, 人間の命令を必要とせず自律的に行動する仮想ロボットに行動を獲得させる．仮想ロボットの運動は物理的制約を考慮した数値計算によって計算される．自律的行動を可能とするため人工ニューラルネットワーク（ANN）を制御器とし，環境や自身の状態等の入力からアクチュエータの駆動パラメータを出力させる．進化計算によってANNのパラメータの学習を行い，行動獲得を行う．
• 進化的手法を用いた飛翔ロボットによる群行動の獲得
  家登 亮多; 飯塚; 博幸; 山本 雅人
  2014年度精密工学会春季大会学術講演会講演論文集, 2014S, 1061, 1062, 公益社団法人 精密工学会, 2014, [Peer-reviewed]
  Japanese, 群を形成する各個体は局所的に相互作用を行い、大域的に統制のとれた行動や我々の予想出来ない群行動を創発する．本研究ではコンピュータ上で仮想的な物理環境を構築し，羽ばたきによる飛翔のモデル化を行った。複数の自律飛翔ロボットに対し人工ニューラルネットワークと進化学習を適用して群行動を獲得させ，飛翔によって生じる協調的群行動について議論する。
• ネットワークトポロジーを考慮した自己組織化マップを用いた倉庫の商品配置の最適化
  南 賢一; 飯塚; 博幸; 山本 雅人
  2014年度精密工学会春季大会学術講演会講演論文集, 2014S, 1053, 1054, 公益社団法人 精密工学会, 2014, [Peer-reviewed]
  Japanese, 物流センター内における各種作業の中でも，注文された商品を保管場所から集配してくるピッキング作業の効率化が最も重要な課題とされている．本研究は，商品配置の最適化によるピッキング作業の効率化を目的とする．商品配置の方法として，注文される商品同士の依存関係を表した共起ネットワークを，商品を配置する棚と通路のネットワークトポロジー上に自己組織化マップを用いて写像する手法を提案し，その手法の有効性を示す．
• Swarm Behavior of Simulated Flapping Birds using Kuramoto Model
  Ryota Kato; Hiroyuki Iizuka; Masahito Yamamoto
  2014 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 112, 117, 2014, [Peer-reviewed]
  English, International conference proceedings
• Insertion-based Particle Swarm Optimization with Local Interaction
  Masaya Honjo; Hiroyuki Iizuka; Masahito Yamamoto
  2014 JOINT 7TH INTERNATIONAL CONFERENCE ON SOFT COMPUTING AND INTELLIGENT SYSTEMS (SCIS) AND 15TH INTERNATIONAL SYMPOSIUM ON ADVANCED INTELLIGENT SYSTEMS (ISIS), 755, 760, 2014, [Peer-reviewed]
  English, International conference proceedings
• Usefulness of Image Analysis on Upper Airway MRI for the Classification of Severe Obstructive Sleep Apnea Syndrome (OSAS)
  MIKAMI Tsuyoshi; YONEZAWA Kazuya; KOJIMA Yohichiro; YAMAMOTO Masahito; FURUKAWA Masashi
  Medical Imaging and Information Sciences, 31, 1, 13, 18, MEDICAL IMAGING AND INFORMATION SCIENCES, 2014, [Peer-reviewed]
  Japanese, Scientific journal, This paper proposes an evaluation index for the classification of severe Obstructive Sleep Apnea Syndrome (OSAS) by the use of the tongue morphology and the cross sectional area of the narrowest upper airway evaluated by image analysis on the upper airway MRI. In general, polysomnography (PSG) is a gold standard evaluation for severe SAS, but sometimes the symptoms do not occur during PSG screening because of the first night effect. The morphology of the upper airway, on the other hand, gives much information about the severity of OSAS. So, the upper airway MRI is often used for medical diagnosis, but few evaluation indices have been reported objectively. We focused on the tongue region and considered two directions from the center to the edge of the tongue higher correlated with the severity and determined the cross sectional area in the narrowest upper airway. These features are weighted and linearly combined to predict the severity. Finally, the severe patients are detected by judging whether the prediction value is greater than or equal to 30. As a result, the true positive rate is 0.909 and the false positive rate is 0.476 for detecting the severe patients.
• Priority rule-based reconstruction for total weighted tardiness minimization of job-shop scheduling problem
  Soichiro Yokoyama; Hiroyuki Hzuka; Masahito Yamamoto
  JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 8, 5, 8, 5, 2014, [Peer-reviewed]
  English, Scientific journal
• An artificial neural network based on the architecture of the cerebellum for behavior learning
  Kenji Iwadate; Ikuo Suzuki; Michiko Watanabe; Masahito Yamamoto; Masashi Furukawa
  Advances in Intelligent Systems and Computing, 270, 143, 151, Springer Verlag, 2014, [Peer-reviewed]
  English, Scientific journal
• Estimation of Twist Phenomenon in Seaweed Population based on Diffusion Kernel
  Jun Ogawa; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the 14th International Symposium on Advanced Intelligent Systems (ISIS 2013), Dec. 2013, [Peer-reviewed]
  English, International conference proceedings
• Strategy of Computer Hex using Network Characteristics
  Kei Takada; Masaya Honjo; Masahito Yamamoto
  Proceedings of the 14th International Symposium on Advanced Intelligent Systems (ISIS 2013), Nov. 2013, [Peer-reviewed]
  English, International conference proceedings
• 観光情報学−情報処理技術の観光への適用
  松原 仁; 山本; 雅人; 川村; 秀憲; 鈴木 恵二
  システム／制御／情報, 57, 8, 316, 322, Institute of Systems, Control and Information Engineers, 15 Aug. 2013, [Peer-reviewed]
  Japanese
• Tourism Informatics : Application of Information Technology to Tourism(Where System & Information Technology Meet Tourism)
  MATSUBARA Hitoshi; YAMAMOTO Masahito; KAWAMURA Hidenori; SUZUKI Keiji
  Systems, control and information, 57, 8, 316, 322, システム制御情報学会, 15 Aug. 2013
  Japanese
• 複合的人工ニューラルネットワーク−教師なし学習を用いた動的制御における選択型ニューラルネットワークアンサンブル−
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 79, 6, 552, 558, The Japan Society for Precision Engineering, 05 Jun. 2013, [Peer-reviewed]
  Japanese, Scientific journal, This paper describes a novel method of combining artificial neural networks (ANNs), the composite artificial neural network (CANN), to improve performance of evolving ANNs (EANNs) in dynamic system control problems. Methods of combining ANNs by majority voting or averaging are not effective in controlling dynamic systems by EANNs. Unsupervised learning of EANNs is mathematically described, and then it is shown that the reason for ineffectiveness depends on the mechanism of evaluating ANNs indirectly by states. To avoid this problem, the CANN selects the suitable ANN by a high-level ANN to combine some ANNs. In numerical experiments, a flapping flight model is controlled by a common EANN and the CANN. The model motion is calculated by physical engine PhysX, and a common EANN and the CANN are optimized by the particle swarm optimization (PSO) respectively. The experiments show that the average evaluation of the CANN is 6.46% higher than that of a common EANN for the same computational time.
• スワーム:群れの創発的挙動生成 人工生物の群れ行動のモデリングとその行動獲得
  古川正志; 岩館健司; 鈴木育男; 山本雅人; 渡辺美知子
  計測と制御, 52, 3, 246, 251, The Society of Instrument and Control Engineers, 10 Mar. 2013
  Japanese, Scientific journal
• Composite Artificial Neural Network for Controlling Artificial Flying Creature
  Ryosuke Ooe; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2, 194, 863, 871, 2013, [Peer-reviewed]
  English, International conference proceedings
• Acquisition of Ground Behavior on the Locust Model under the Virtual Physical Environment
  Yuta Umemura; Masahito Yamamoto; Ikuo Suzuki; Masashi Furukawa
  INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2, 194, 775, 783, 2013, [Peer-reviewed]
  English, International conference proceedings
• Acquisition of Dispatching Rules for Job-Shop Scheduling Problem by Artificial Neural Networks Using PSO.
  Yasumasa Tamura; Masahito Yamamoto; Ikuo Suzuki; Masashi Furukawa
  JACIII, 17, 5, 731, 738, 2013, [Peer-reviewed]
  English, Scientific journal
• A NEW HEURISTIC FOR TRAVELING SALESMAN PROBLEM BASED ON LCO
  Soichiro Yokoyama; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012, 345, 350, 2013, [Peer-reviewed]
  English, International conference proceedings
• LEMとDSSOMのハイブリッド可視化法におけるパラメータ調整
  川口 光; 山本; 雅人; 古川 正志
  第98回知能ベースシステム研究会 人工知能学会研究会資料SIG-KBS-B203, 98, 21, 26, 東京 : 人工知能学会, 2013
  Japanese
• The Boundary Archive Genetic Algorithm
  XU ZHUORAN SUZUKI IKUO YAMAMOTO MASAHITO FURUKAWA MASASHI
  2013年度精密工学会春季大会学術講演会講演論文集, 2013S, 283, 284, The Japan Society for Precision Engineering, 2013
  Japanese, Radius-based evolutionary algorithms for Multimodal Optimization are criticized for the difficulty of the proper choice of radius which is crucial in assuring accurate results. TSC2 uses Detect-Multimodal Method to detect different peaks on landscape without assigning a radius. However, it needs mass number of additional evaluations which makes it expensive on time cost. This paper proposed a new algorithm to estimate the boundaries of peaks and archives them to reuse. It costs much fewer evaluations comparing to TSC2.
• DYNAMIC MODELING AND SIMULATION OF MOVING MARINE PLANT POPULATION
  Jun Ogawa; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE IADIS INTERNATIONAL CONFERENCE ON COMPUTER GRAPHICS, VISUALIZATION, COMPUTER VISION AND IMAGE PROCESSING 2013, 157, 160, 2013, [Peer-reviewed]
  English, International conference proceedings
• An attraction basin estimating genetic algorithm for multimodal optimization
  Zhuoran Xu; Mikko Polojärvi; Masahito Yamamoto; Masashi Furukawa
  GECCO 2013 - Proceedings of the 2013 Genetic and Evolutionary Computation Conference Companion, 131, 132, ACM, 2013, [Peer-reviewed]
  English, International conference proceedings
• Study on Twining of Virtual Seaweed in Fluid Environment
  Jun Ogawa; Masahito Yamamoto; Ikuo Suzuki; Masashi Furukawa
  INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2, 194, 815, +, 2013, [Peer-reviewed]
  English, Scientific journal
• 観光情報学におけるバックグラウンドコンピューティングのすすめ〜コンピュータは控えめがいい〜
  山本 雅人
  観光情報学会誌「観光と情報」, 9, 1, 59, 63, 観光情報学会, 2013, [Peer-reviewed]
  Japanese
• 人工生物の群れ行動のモデリングとその行動獲得
  古川 正志; 岩館; 健司; 鈴木; 育男; 山本; 雅人; 渡辺 美知子
  計測と制御, 52, 3, 246, 251, 2013, [Peer-reviewed]
  Japanese, Scientific journal
• THE HYBRID APPROACH OF LCO AND SA TO SOLVE JOB-SHOP SCHEDULING PROBLEM
  Yasumasa Tamura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012, 26, 4, 337, 344, 2013, [Peer-reviewed]
  English, International conference proceedings
• JOB-SHOP SCHEDULING APPROACH TO ORDER-PICKING PROBLEM
  Yukiyasu Iwasaki; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012, 26, 3, 325, 331, 2013, [Peer-reviewed]
  English, International conference proceedings
• Spectral Classification of Oral and Nasal Snoring Sounds Using a Support Vector Machine.
  Tsuyoshi Mikami; Yohichiro Kojima; Kazuya Yonezawa; Masahito Yamamoto; Masashi Furukawa
  JACIII, 17, 4, 611, 621, 2013, [Peer-reviewed]
  English, Scientific journal
• Study on evolution of the artificial flying creature controlled by neuro-evolution
  Ryosuke Ooe; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Artificial Life and Robotics, 17, 3-4, 470, 475, 2013, [Peer-reviewed]
  English, Scientific journal
• LEMとDSSMOのハイブリッド法によるネットワークの可視化
  川口 光; 山本; 雅人; 古川 正志
  第12回複雑系マイクロシンポジウム講演論文集, 9, 12, 2013
  Japanese, Scientific journal
• 注文商品の共起ネットワークを用いた商品の最適配置
  南 賢一; 山本; 雅人; 古川 正志
  第12回複雑系マイクロシンポジウム講演論文集, 13, 18, 2013
  Japanese, Scientific journal
• 人工生物の群行動獲得と複雑ネットワークに基づく解析
  家登 亮多; 山本; 雅人; 古川 正志
  第12回複雑系マイクロシンポジウム講演論文集, 29, 34, 2013
  Japanese, Scientific journal
• ニコニコ動画におけるタグの階層構造を利用した検索結果の分類
  高橋 文彦; 山本; 雅人; 古川 正志
  第12回複雑系マイクロシンポジウム講演論文集, 51, 56, 2013
  Japanese, Scientific journal
• 筋骨格モデルによる人工生命の行動獲得
  松林 涼平; 古川; 正志; 山本 雅人
  第12回複雑系マイクロシンポジウム講演論文集, 77, 82, 2013
  Japanese, Scientific journal
• 画像解析による被災がれき量の推定に関する基礎研究
  山本 雅人; 古川; 正志; 高谷; 敏彦; 大内 東
  情報処理学会第75 回全国大会講演論文集, 2013, 1, 497, 498, 情報処理学会, 2013
  Japanese, 東日本大震災の津波被害に代表される大規模な家屋の倒壊を含む災害時において，迅速な対応，復旧に向けた取組を総合的に行うためには，被災がれき量をより早くより正確に推定する必要がある．しかしながら，現状では被災がれき量を精度よく見積る手法は確立されておらず，実際の災害復旧現場において，輸送手段や輸送経路の確保に失敗したり，仮置き場の数が足りなかったりといった事態を引き起こし，復旧の妨げになっている．本研究では，航空写真などの画像データから被災地域をある程度特定し，地図データとの照合によりおおまかな被災がれき量を推定する手法について検討する．
• 高密度状態における海藻個体群の移動シミュレーションとその力学的解析
  小川 純; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文集, 2013S, 273, 274, 公益社団法人 精密工学会, 2013
  Japanese, 海藻培養は生産性の面から高密度培養が主流となっているが，高密度培養環境が海藻の成長に与える影響についてはまだ明らかにされていない．本研究では浮遊性海藻の高密度培養における個体群の移動について物理シミュレーションを用いた解析を行う．円筒培養器および海藻の物理モデルの作成と海藻の高密度群移動シミュレーションの方法を示し，個体群の移動について個体の物理的位置および移動速度の点から力学的解析を行う．
• JSPにおける局所クラスタリング組織化法を用いたリアクティブスケジューリング
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文集, 2013S, 275, 276, 公益社団法人 精密工学会, 2013
  Japanese, リアクティブスケジューリングは，予め決められた作業計画を実際の作業状況に応じて逐次修正するスケジューリング法である．ジョブショップスケジューリング問題（ＪＳＰ）におけるリアクティブスケジューリングに対するメタヒューリスティクスの適用事例として，遺伝的アルゴリズム（ＧＡ）を用いた先行研究が存在する．本研究では，ＧＡに替えて局所クラスタリング組織化法（ＬＣＯ）を適用し，結果について考察する．
• 時間遅れを考慮した情報伝播におけるトポロジーの影響について
  小松 琢也; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文集, 2013S, 285, 286, 公益社団法人 精密工学会, 2013
  Japanese, 近年，Social Networking Service(SNS)の普及により，人から人への情報の伝わり方は大きく変化した．SNSはインターネットという通信速度の速い媒体を介することにより，情報が人から人へと伝わる時間より，人の振る舞いによる時間のほうが長く，影響が大きくなった．本論文では，情報伝播の時間遅れを考慮したことにより，ネットワークのトポロジーの違いが情報伝播に対して与える影響を調査する．
• 割り付けルールによる局所探索を用いたジョブショップスケジューリング問題の近似解放
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文集, 2013, 291, 292, 公益社団法人 精密工学会, 2013
  Japanese, Scientific journal, ジョブショップスケジューリング問題（JSP）とは，限られた資源を用いて複数の仕事を処理する際に，効率的なスケジュールを求める問題である．その近似解法として，スケジュールの近傍を定義することによる局所探索や，資源を利用する際の優先度をルールにより定める方法が考案されている．本研究では，部分的な割り付けルールの適用結果を局所探索における近傍と考え，割り付けルールによるJSPの局所探索方法を提案する．
• 巡回セールスマン問題に対する粒子群最適化法の拡張
  本庄 将也; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文, 2013S, 295, 296, 公益社団法人 精密工学会, 2013
  Japanese, 群知能をモデルとした最適化手法の一つに粒子群最適化法(PSO)がある. PSOでは粒子は数値ベクトルとして表現され, 順列を解として持つTSPの解探索法としてそのまま利用できない. 本研究では, 各粒子をローカルベストやグローバルベストへ収束させる操作を, それらの部分経路を挿入することで再現した, 順列を粒子とするPSOを提案し, その有効性をその他の最適化手法との比較により議論する.
• 電子掲示板におけるスレッドの分類指標の検証
  田中 航介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文, 2013S, 297, 298, 公益社団法人 精密工学会, 2013
  Japanese, ユーザは電子掲示板から目的の話題の情報を発見するために探索を行うが，近年では電子掲示板の蓄積する情報量に比例しその探索時間は増加している．本研究ではスレッドを話題の単位とするスレッドフロート型掲示板を対象にスレッドの分類を行い，スレッドをノード，その類似度を重み付きリンクとするネットワークを作成し，ユーザの情報探索補助を目的としたスレッドの分類の方法を提案，その有効性を検証する．
• 進化的ニューラルネットワークによる仮想ロボットの協調行動の獲得
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文, 2013S, 299, 300, 公益社団法人 精密工学会, 2013
  Japanese, 複数の仮想ロボットの協調によって目的を達成する行動獲得を行う．仮想ロボットはコンピュータ内にモデル化され，動力学と制御器からの制御信号に従って運動が決定される．制御器として人工ニューラルネットワーク（ANN）を用い，最適化アルゴリズムを用いてANNのパラメータを学習することで目的の行動を獲得する．協調の方法を変化させることにより行動がどのように変化するかを報告する．
• スワームモデルにおける群行動の学習と協調動作の獲得
  家登 亮多; 山本; 雅人; 古川 正志
  2013年度精密工学会北海道支部学術講演会講演論文集, 63, 64, 2013
  Japanese, Scientific journal
• 筋骨格モデルを用いた人工カエルの跳躍行動制御
  松林 涼平; 山本; 雅人; 古川 正志
  2013年度精密工学会北海道支部学術講演会講演論文集, 111, 112, 2013
  Japanese, Scientific journal
• 割り付けルールによるフレキシブルジョブショップ問題の解法
  横山 想一郎; 山本; 雅人; 古川 正志
  2013年度精密工学会秋季大会学術講演会講演論文集, 2013, 761, 762, 公益社団法人 精密工学会, 2013
  Japanese, フレキシブルジョブショップスケジューリング問題（FJSP）とは，生産システムを抽象化し，複数の仕事を並行して処理する際に，効率的な機械の利用方法を求める問題である．FJSPにおいては，各作業工程に代替機械が用意され，機械上での工程の作業順序だけでなく，各工程の作業機械を決定しなくてはならない．本研究では，割り付けルールを部分的に適用することで，総所要時間の短いスケジュールを効率的に得る方法を提案する．
• ネットワークトポロジー上の自己組織化マップによる商品配置
  南 賢一; 山本; 雅人; 古川 正志
  2013年度精密工学会秋季大会学術講演会講演論文集, 2013, 765, 766, 公益社団法人 精密工学会, 2013
  Japanese, 物流センター内の各種作業の中でも，注文された商品を保管場所から取り出して梱包するピッキング作業が最もコストを要していることが知られている．本研究では，ピッキング作業を効率化するための商品配置に着目し，注文される商品同士の依存関係を表現した共起ネットワークを，商品を配置する棚と通路のネットワークトポロジー上に自己組織化マップを用いて写像することで商品配置を行う手法を提案する.
• 被災がれき量推定のための画像領域を利用した建造物の変化検出
  利根川; 凛; 山本; 雅人; 古川 正志
  2013年度精密工学会秋季大会学術講演会講演論文集, 2013, 773, 774, 公益社団法人 精密工学会, 2013
  Japanese, 災害時において，被災状況を把握できないことが問題となっている．大量のがれきが発生した場合，早急に輸送手段や仮置き場の手配をする必要がある．しかし，現状では被災地での被害状況の把握，被災がれき量の推定について短時間で行うことはほぼ不可能である．そこで本研究では，震災前後の航空写真の画像データから，家屋のある範囲を抽出・解析し，家屋倒壊の著しい地域を特定することで，被災地のがれき量を推定する．
• 選択型ニューラルネットワークアンサンブルによる仮想ロボットの複合的行動獲得
  大江 亮介; 鈴木; 育男; 古川; 正志; 山本 雅人
  2013年度精密工学会秋季大会学術講演会講演論文集, 2013, 787, 788, 公益社団法人 精密工学会, 2013
  Japanese, 選択型ニューラルネットワークを用いたアンサンブル学習により，複数の異なる行動を必要とする複合的行動の獲得を行う．仮想ロボットの運動は運動方程式を基に数値積分によって計算する．ニューラルネットワークのパラメータを進化計算により最適化し，目的とする行動を獲得する．一般的なニューラルネットワークを用いた行動獲得と比較し，選択型ニューラルネットワークアンサンブルの優位性について報告を行う．
• 複数情報の伝播に対する時間遅れの影響
  小松 琢也; 山本; 雅人; 古川 正志
  第10回ネットワーク生態学シンポジウム講演論文集, 21, 2013
  Japanese, Scientific journal
• 類似したネットワークデータの連続的可視化方法
  川口 光; 山本; 雅人; 古川 正志
  第10回ネットワーク生態学シンポジウム講演論文集, 21, 2013
  Japanese, Scientific journal
• 2部グラフによる電子掲示板のスレッド分類手法
  田中 航介; 鈴木; 育男; 山本; 雅人; 古川 正志
  第12回情報科学技術フォーラム講演論文集, 12, 1, 181, 182, 情報処理学会, 2013
  Japanese
• 時間変化を考慮したネットワーク可視化方法
  川口 光; 山本; 雅人; 古川 正志
  第12 回情報科学技術フォーラム講演論文集, 12, 1, 193, 194, 情報処理学会, 2013
  Japanese
• 割り付けルールによる局所探索を用いたジョブショップスケジューリング問題の近似解法
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  2013年度精密工学会春季大会学術講演会講演論文集, 2013, 291, 292, 公益社団法人 精密工学会, 2013, [Peer-reviewed]
  Japanese, ジョブショップスケジューリング問題（JSP）とは，限られた資源を用いて複数の仕事を処理する際に，効率的なスケジュールを求める問題である．その近似解法として，スケジュールの近傍を定義することによる局所探索や，資源を利用する際の優先度をルールにより定める方法が考案されている．本研究では，部分的な割り付けルールの適用結果を局所探索における近傍と考え，割り付けルールによるJSPの局所探索方法を提案する．
• Tongue Morphology Analysis from the Upper Airway MRI for the Diagnosis of Obstructive Sleep Apnea
  Tsuyoshi Mikami Kazuya; Yonezawa Yohichiro; Kojima; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the 35th Annual Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 51, 3234, 96-R-96, Japanese Society for Medical and Biological Engineering, 2013, [Peer-reviewed]
  English, International conference proceedings
• Attraction basin estimating GA: An adaptive and efficient technique for multimodal optimization
  Zhuoran Xu; Mikko Polojarvi; Masahito Yamamoto; Masashi Furukawa
  2013 IEEE Congress on Evolutionary Computation, CEC 2013, 333, 340, 2013, [Peer-reviewed]
  English, International conference proceedings
• Study on Twining of Virtual Seaweed in Fluid Environment
  Jun Ogawa; Masahito Yamamoto; Ikuo Suzuki; Masashi Furukawa
  INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2, 194, 815, +, 2013, [Peer-reviewed]
  English, International conference proceedings
• JOB-SHOP SCHEDULING APPROACH TO ORDER-PICKING PROBLEM
  Yukiyasu Iwasaki; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012, 325, 331, 2013, [Peer-reviewed]
  English, International conference proceedings
• 仮想流体環境内における人工生物の形状と移動能力の関係
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 78, 12, 1069, 1075, The Japan Society for Precision Engineering, 05 Dec. 2012, [Peer-reviewed]
  Japanese, Scientific journal, Morphology of an artificial creature plays an important role in the behavior acquisition of them because the behaviors strongly depend on its morphology. In this study, it is examined how the behavior differences appear when its morphology changes in the virtual fluid environment. We construct the approximate virtual fluid environment with low computing costs to simulate the behavior acquisition for them. Also we propose a simulation method for them in consideration of effects from the virtual fluid environment based on physics modeling. Results are discussed on a relation between its morphology and acquired behaviors.
• 時間遅れを考慮した情報伝播モデルの提案
  小松 琢也; 鈴木; 育男; 山本; 雅人; 古川 正志
  第13回 公益社団法人 計測自動制御学会 システムインテグレーション部門 講演論文集, 230, 235, Dec. 2012
  Japanese, Symposium
• ニコニコ動画のタグによる動画関係の研究
  高橋 文彦; 鈴木; 育男; 山本; 雅人; 古川 正志
  第13回計測自動制御学会システムインテグレーション部門講演会, 196, 199, Dec. 2012
  Japanese, Scientific journal
• Tourism Informatics:9. Information Propagation Network for 2012 Tohoku Earthquake and Tsunami on Twitter
  Masahito YAMAMOTO; Hiroya OGASAWARA; Ikuo SUZUKI; Masashi FURUKAWA
  IPSJ Magazine, 53, 11, 1184, 1191, 一般社団法人情報処理学会, 15 Oct. 2012
  Japanese, 2011年3月11日に発生した東日本大震災の際，携帯電話などの通信手段が途絶えた中で平常通り機能していたTwitterでは，災害情報や避難地情報などについての情報伝播が活発に行われた．本稿では，東日本大震災発生後のTwitterにおけるリツイートをベースとした情報伝播ネットワークを作成し，震災時のネットワークを分析することで，多くのユーザが関心をもち，より緊急性の高い話題の情報伝播の様子について分析する．そして，観光分野や災害時におけるTwitterでのリアルタイム情報発信の可能性について言及する．
• 共起ネットワークを用いた商品の注文データの解析
  南 賢一; 山本; 雅人; 古川 正志
  情報処理学会北海道シンポジウム講演論文集, 39, 40, Oct. 2012
  Japanese, Symposium
• ニコニコ動画におけるタグ共起ネットワークを用いたコンテンツ抽出
  高橋 文彦; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会北海道シンポジウム2012, 5, 6, Oct. 2012
  Japanese, Symposium
• 群行動シミュレーションにおける振る舞いの観測
  家登 亮多; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会北海道シンポジウム2012, 153, 156, Oct. 2012
  Japanese, Symposium
• 人の生活時間による伝播遅れを考慮した情報伝播モデルにおける
  小松 琢也; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2012 講演論文集, 65, 70, Oct. 2012
  Japanese, Symposium
• オーダーピッキングにおける局所性鋭敏型ハッシュを用いた伝票割当問題の解法
  l; ??u
  情報処理学会北海道シンポジウム2012, 45, 48, Oct. 2012
  Japanese, Symposium
• 異なる環境下における人工生物の最適行動の獲得
  松林 涼平; 山本; 雅人; 古川 正志
  情報処理学会北海道シンポジウム2012講演論文集, 141, 144, Oct. 2012
  Japanese, Scientific journal
• ネットワークの大域的可視化におけるLEMとDSSOMの組み合わせ
  川口 光; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会北海道シンポジウム２０１２講演論文集, 41, 44, Oct. 2012
  Japanese, Scientific journal
• 流体中の運動計算のための物理シミュレーション環境―粒子群最適化によるダ・ビンチ型螺旋翼の形状決定―
  大江亮介; 鈴木育男; 山本雅人; 古川正志
  精密工学会誌, 78, 4, 348, 353, The Japan Society for Precision Engineering, 05 Apr. 2012
  Japanese, Scientific journal, This paper describes a method of computing motion in fluid and an experiment using it. Motion of an object is computed by a physical simulation environment. It is constructed of a physical engine, which processes computation of rigid body dynamics. Computation of fluid dynamics is additionally implemented to the environment so that motion in fluid is simulated faster than other computational methods. The environment read easily the three dimensional mesh data, which is commonly used by CAD systems, then computes and visualizes motion immediately. The experiment is optimizing shapes of Leonardo da Vinci's spiral wings. Parameters of the spiral wing are optimized by a particle swarm optimization (PSO) or a sequential search so that the wing flies higher under two conditions. PSO usually find better parameters than a sequential search and do about sixty times as faster as a sequential search. The environment computes virtual motion for twenty seconds in real time of one second. The shapes given by an optimization are difference each other according to the given conditions, and proper from viewpoint of fluid dynamics.
• バッタモデルの目標高さに応じた跳躍動作の獲得
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会秋季大会学術講演会講演論文集, 2012, 447, 448, 公益社団法人 精密工学会, 2012
  Japanese, 生物の地上での代表的な移動方法として跳躍動作が挙げられる．跳躍動作は主に障害物を飛び越えるために使われるが，空中，着地時での姿勢を考慮しなければならず，その制御法は未確立である．本研究では，物理エンジンPhysXを用いバッタモデルを仮想環境下に作成する．学習アルゴリズムのひとつであるニューロエボリューションを使い，バッタモデルに目標高さに応じた跳躍動作を獲得させ，その分析を行う．
• ジョブ割り付けルールの解析によるJSPベンチマーク問題の分類
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会北海道支部 第51回講演概要集, 2012.51, 173, 174, The Japan Society of Mechanical Engineers, 2012
  Japanese
• ジョブショップスケジューリング問題に対する人工ニューラルネットワークを用いたジョブ割り付けルールの獲得
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会秋季大会学術講演会講演論文集, 2012, 459, 460, 公益社団法人 精密工学会, 2012
  Japanese, ジョブショップスケジューリング問題（JSP）に関して，これまで多くの研究がなされている．JSPでは，各ジョブの作業時間や作業の進行状況，機械上での待機時間など，数値的な特徴量が複数存在し，これらを基準としてジョブの割り付け順序を決定することが可能である．本研究では，このような特徴量を入力とし，ジョブ割り付けルールとして各ジョブの優先度を出力する人工ニューラルネットワークを進化計算によって獲得する．
• A Study on the Compose Method by Composite Neuroevolution on Cat Landing Problem
  XU ZHUORAN; 山本; 雅人; 古川 正志
  2012年度精密工学会北海道支部学術講演会講演論文集, 87, 88, 2012
  Japanese, Symposium
• A Study on Falling Cat Landing Problem Using Composite Neuroevolution
  XU ZHUORAN; 山本; 雅人; 古川 正志
  2012年度精密工学会秋季大会学術講演会講演論文集, 2012, 451, 452, The Japan Society for Precision Engineering, 2012
  Japanese, Cat has ability to safely land in the free fall. In this research, we first construct a virtual cat robot by Physics Modeling. Then we use Composite Neuroevolution to optimize its controller. Composite Neuroevolution optimizes multiple Artificial Neural Networks which are integrated into a complete controller in a pre-defined way. On the contrast, common Neuroevolution algorithms, for example CMA-ES, NEAT, CNE, ESP, optimize one Artificial Neural Network. In our experiment, only Composite Neuroevolution can converge. The result shows the landing behavior is achieved by our method.
• 進化計算群を用いた仮想流体環境における人工生物の行動獲得とその比較
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会北海道支部学術講演会講演論文集, 83, 84, 2012
  Japanese, Symposium
• 物流センターにおける商品配置を考慮したピッキング作業の最適化
  岩崎 幸安; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会秋季大会学術講演会講演論文集, 2012, 461, 462, 公益社団法人 精密工学会, 2012
  Japanese, 近年，物流センターのピッキング作業は顧客へより早く配送するための効率化が求められている．本研究では，作業時に発生する混雑を考慮して効率的なスケジュールを探索するため，ピッキング作業をジョブショップ型の生産システムとして応用し，混雑を回避するための商品配置方法や経路決定方法を提案する．実データに基づいた数値計算実験により，本方法の有効性や混雑状況への影響を検証する．
• 多自由度培養海藻モデルの接触回避のための水流制御
  小川 純; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会北海道支部学術講演会講演論文集, 3, 4, 2012
  Japanese, Symposium
• ノードの特徴量とネットワーク構造差異の関係
  滝見 優太; 山本; 雅人; 古川 正志
  2012年度精密工学会北海道支部学術講演会論文集, 93, 94, 2012
  Japanese, Symposium
• ノードの特徴量を考慮したネットワーク間類似度
  滝見 優太; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回情報科学技術フォーラム, 11, 1, 81, 82, 情報処理学会, 2012
  Japanese
• 局所エネルギー最小化法における近傍半径パラメータの効果
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回情報科学技術フォーラム講演論文集, 11, 1, 143, 144, 情報処理学会, 2012
  Japanese
• クリティカルパスを考慮したジョブショップスケジューリング問題の近似解法
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会北海道支部第五十一回講演会講演概要集, 51st, 175, 176, The Japan Society of Mechanical Engineers, 2012
  Japanese
• 割り付けルールを用いたジョブショップスケジューリング問題の近似解法
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学秋季大会学術講演会講演論文集, 2012, 457, 458, 公益社団法人 精密工学会, 2012
  Japanese, 生産システムを抽象化したモデルとして，ジョブショップスケジューリング問題（JSP）が存在し，JSPに対する近似解法の研究が幅広く行われている．本研究では，JSPに対する近似解法として，局所的な割り付けルールの適用を繰り返す方法を提案する．また，既存のルールを組み合わせることによって多様な割り付けルールを適用し，問題に応じて利用するルールを最適化する方法を提案する．
• ニューロエボリューションによる仮想ロボットの行動制御
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会秋季大会学術講演会講演論文集, 2012, 449, 450, 公益社団法人 精密工学会, 2012
  Japanese, 人工ニューラルネットワーク（ANN）と進化計算を組み合わせた手法であるニューロエボリューションによって仮想ロボットの行動制御を行う．仮想ロボットの運動は物理エンジンPhysXによって計算される．はじめに，様々な目的行動をそれぞれ独立にANNに学習させる．これらのANNを操縦者からの抽象的な命令を実行する制御装置とみなし，状況に応じていずれかのANNを選択して用いることで複雑な行動を生成する．
• 共起ネットワークを用いた電子掲示板からの情報抽出
  田中 航介; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回情報科学技術フォーラム(FIT2012)講演論文集, 11, 1, 83, 84, 情報処理学会, 2012
  Japanese
• ジョブショップスケジューリング問題に対するNeuro-evolutionの適用
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  第22回 インテリジェント・システム・シンポジウム 講演論文集, 2012
  Japanese, Symposium
• ディスパッチングルールを用いたLCOによるJSPの近似解法
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  第22回インテリジェント・システム・シンポジウム講演概要集, 22nd, 2012
  Japanese, Symposium
• 動的近傍競合学習のしきい値による コミュニティ分割への影響
  小野寺; 大地; 鈴木; 育男; 山本; 雅人; 古川 正志
  ネットワークが創発する知能研究会(JWEIN’12)講演論文集, 12013, 2012, [Peer-reviewed]
  Japanese, Symposium
• 動的なインタラクションを考慮した人工生物の行動創発
  岩館 健司; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-E10_1, _1A2-E10_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, This study aims to actualize the interactive behavior of virtual creatures with neural controller. For generating a control signal with a rhythmic pattern, a controller for the virtual creature is modeled by a combination of a Central Pattern Generator (CPG) and an Artificial Neural Network (ANN). The evolution of the behavior of the virtual creature is realized by a learning ANN and CPG An optimization algorithm is adopted into the learning process.
• 人工海藻モデルによる海藻培養環境に関する研究
  小川 純; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-E09_1, _1A2-E09_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, This study verifies a relationship between environment and virtual seaweed to examine twining of seaweed in a cultivation pool. The morphology of virtual seaweed is modeled by L-system. Physics modeling is adopted to realize its physical motion. Two physical properties, adhesiveness, and tear are artificially introduced into this model. A virtual underwater environment is constructed by the Lattice Boltzmann method The virtual seaweed behavior is simulated in the given environment by physics calculation. In order to examine a force by alteration of water flow for the virtual seaweed, the simulation is executed under some water flow patterns. We ascertained that the twining of virtual seaweed has the close relationship with the water flow.
• 仮想物理環境におけるバッタモデルの歩行・跳躍動作
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-E08_1, _1A2-E08_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, This paper proposes how to acquire the composite behavior composed of the jumping, landing and walking behavior on artificial creature like a locust under the physical virtual environment. We acquires such behaviors by use of neuroevolution. Neuroevolution is one of the learning algorithm composed of artificial neural network(ANN) and real-coded genetic algorithm (RCGA) and we acquire optimized behavior of the locust model by use of it. In this study, we realize the jumping behavior first. After that, we realize the landing behavior to fix the posture of the locust model. Finally, we realize the walking behavior. We analyze the obtained behavior.
• 仮想流体環境におけるエネルギー効率を考慮した人工生物の行動獲得
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-E07_1, _1A2-E07_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, A morphology of an artificial creature plays an important role in its behavior artificial creatures because the acquired behaviors strongly are affected with its morphology. In this study, we simulate several type of artificial creatures with the different number of joints to acquire behaviors. Results are discussed on a relation between a morphology of the artificial creature and an acquired behavior in considering energy efficiency.
• 多目的最適化を用いた適応行動の多様性とその応用について
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-E06_1, _1A2-E06_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, Designing complicated behavior for an autonomous robot is a significant challenge in the field of adaptive behavior researches. We have proposed the behavior design method for virtual autonomous robots. It aims to obtain complicated behaviors by combining several artificial neural networks as primitive controllers. We have shown that the proposed method is capable of designing behaviors to achieve complicated tasks. This paper aims to introduce the multi-objective optimization into the proposed method to sustain diversity of primitive controllers. We conduct a simulation experiment for khepera-like mobile robot to acquire locomotion. Simulation experiments are carried out to show the effectiveness of our method.
• 行動獲得における目的タスクの多様性と汎化能力
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会ロボティクス・メカトロニクス講演会2012 (Robomec 2012) 講演論文集, 2012, _1A2-C06_1, _1A2-C06_4, The Japan Society of Mechanical Engineers, 2012
  Japanese, This paper describes numerical simulations of a moving virtual robot. The virtual robot moves on a two-dimensional plane by the law based on the Newton's equations. The motion of the virtual robot is controlled by an artificial neural network (ANN). In order to control the virtual robot moving for a given target place, parameters of ANNs are optimized by particle swarm optimization (PSO). This type of control and learning method is called evolutionary ANN (EANN). It is shown by many numerical simulations that difficulties of learning rely on a position at which the target is placed. The phenomena is also found that a generalization ability of an ANN, that is, the ability to go toward not learned targets, decreases as learning of EANN progresses. Additional simulations show that learning simultaneously for two of more target places brings the high generalization ability.
• 旭川市における公衆無線LAN環境の整備について
  山本 雅人; 平島; 淳嗣 ムリグン; 古川; 正志; 大内 東
  観光情報学会第9回全国大会発表概要集, 54, 55, 2012
  Japanese, Symposium
• 局所エネルギー最小化法におけるパラメータの効果
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会北海道支部学術講演会公演論文集, 85, 86, 2012
  Japanese, Symposium
• 局所エネルギー最小化法における近傍半径パラメータの効果に関する検証
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会第74回全国大会講演論文集, 2012, 1, 415, 416, 一般社団法人情報処理学会, 2012
  Japanese, データをノードとエッジの組み合わせで表されるネットワークは,WWWや電力網,知人関係,神経網などを表現できる.ネットワーク構造の特徴を理解するために,ネットワーク可視化を行い,人間の高い認識能力を利用することで,新たな知的創出の手助けになることが期待されている.本研究では力学的手法を基にした,高速にレイアウトするネットワークの可視化手法である局所エネルギー最小化法(LEM)を用い,LEMにおける力の平衡状態に陥る状態を防ぎながらレイアウトすることを目的とする.この目的を達成するため,近傍半径パラメータを調整することを提案し,その効果を検証する.
• 模擬いびき音に見られるSAS固有の音響的特徴
  三上 剛; 小島; 洋一郎; 米澤; 一也; 山本; 雅人; 古川 正志
  医療機器学, 82, 2, 228, 228, 日本医療機器学会, 2012, [Peer-reviewed]
  Japanese, Symposium
• 類似ノードの特徴量を考慮したネットワーク間距離の提案
  滝見 優太; 鈴木; 育男; 山本; 雅人; 古川 正志
  第8回ネットワーク生態学シンポジウム予稿集, 2012
  Japanese, Symposium
• 複合的人工ニューラルネットワークを用いた仮想飛翔ロボットの3次元追従行動
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会春季大会学術講演会講演論文集, 2012S, 417, 418, 公益社団法人 精密工学会, 2012
  Japanese, 想的な飛翔ロボットの制御シミュレーションを行う．飛翔ロボットは胴体に左右2枚の翼と尾が接合された単純な構造物である．物理エンジンPhysXによる剛体力学計算を基に，流体抗力計算を付加的に用い運動計算を行う．制御器として人工ニューラルネットワーク(ANN)を用い，進化計算によってターゲット追従行動の学習を行う．学習済みの複数のANNを組み合わせることで行動学習が改善されることを示す．
• 大規模物流センターの混雑を考慮したピッキング作業の最適化
  岩崎 幸安; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会春季大会学術講演会講演論文集, 2012S, 415, 416, The Japan Society for Precision Engineering, 2012
  Japanese, 物流センターにおけるピッキング作業のコストを削減するためこれまで様々な手法が研究されてきたが，これらは混雑状況が考慮されていないものがほとんどである．このため混雑がピッキング作業に与える影響と混雑を回避することの有効性は検証されていない．本研究ではピッキング作業に混雑を考慮し，組合せ最適化問題として定式化する．実データを用いた数値計算実験では，実際に最適化手法を適用し混雑状況の影響を検証する．
• 仮想水中環境下における人工海藻の挙動の解析
  小川 純; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会春季大会学術講演会講演論文集, 2012S, 411, 412, The Japan Society for Precision Engineering, 2012
  Japanese, 海藻はCO₂を吸収して成長し，バイオエネルギーとして利用可能であることから注目を浴びている．しかし，絡みやちぎれなどの成長を阻害する要素があり，これらの現象の解消が大規模な培養工場の導入の課題となっている．本研究ではL-systemを用いて海藻の物理モデルを作成し，流体力学に基づく水中環境下で物理シミュレーションを行う．水流の変化に伴って生じる海藻の挙動を示し，水流と海藻に生じる諸現象との関係性を検討する．
• 仮想物理環境におけるバッタモデルの地上動作に関する研究
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会春季大会学術講演会講演論文集, 2012S, 403, 404, The Japan Society for Precision Engineering, 2012
  Japanese, 地上での代表的な移動方法として，歩行，走行，跳躍などが挙げられる．不整地での移動や素早く移動する必要がある場合，これらの移動法を組合せると，より効率的な移動を実現することができる．本研究では仮想物理環境下にバッタモデルを作成し，学習アルゴリズムで歩行，跳躍を獲得する．また獲得した動作の分析，有効性の検証，複数動作の組合せによる動作の解析を行う．
• エネルギーを考慮した人工生物の形状と移動能力の関係
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2012年度精密工学会春季大会学術講演会講演論文集, 2012S, 397, 398, The Japan Society for Precision Engineering, 2012
  Japanese, 人工生物の行動獲得実験では，人工生物の形状や外部の環境が行動獲得に大きな影響を及ぼす．そこで，本研究では，物理法則に従う人工生物の行動獲得実験を可能にするために，計算量が小さい近似物理環境を構築した．また，その環境下で，進化計算を利用した様々な形状の人工生物の行動獲得実験を行う．更に，獲得した行動を解析することで，エネルギーを考慮した人工生物の形状と移動能力の関係を明らかにすることを目的とする．
• フラクタル図形を用いた階層型データの可視化
  田中 航介; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回複雑系マイクロシンポジウム講演論文集, 81, 86, 2012
  Japanese, Symposium
• 信頼関係ネットワークにおける相反情報伝播モデルの提案
  小松 琢也; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回複雑系マイクロシンポジウム講演論文集, 55, 60, 2012
  Japanese, Symposium
• 流体環境における海藻の絡み現象の解析
  小川 純; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回複雑系マイクロシンポジウム講演論文集, 37, 42, 2012
  Japanese, Symposium
• 半順序先行関係を持つジョブショップスケジューリング問題の解法
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回複雑系マイクロシンポジウム講演論文集, 29, 34, 2012
  Japanese, Symposium
• 構築法を取り入れた局所クラスタリング組織化法によるTSPの解法
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回複雑系マイクロシンポジウム講演論文集, 21, 26, 2012
  Japanese, Symposium
• The hybrid approach of LCO and SA to solve job-shop scheduling problem
  Yasumasa Tamura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  ASME/ISCIE 2012 International Symposium on Flexible Automation, ISFA 2012, 337, 344, 2012, [Peer-reviewed]
  English, International conference proceedings
• An SVM-based classification of oral and nasal snoring sounds with Kullback-Leibler kernel
  Tsuyoshi Mikami; Yohichiro Kojima; Kazuya Yonezawa; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the SICE Annual Conference, 1795, 1797, 2012, [Peer-reviewed]
  English, International conference proceedings
• 流体中の運動計算のための物理シミュレーション環境ー粒子群最適化によるダ・ヴィンチ型螺旋翼の形状決定ー
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 78, 4, 348, 353, The Japan Society for Precision Engineering, 2012, [Peer-reviewed]
  Japanese, Scientific journal, This paper describes a method of computing motion in fluid and an experiment using it. Motion of an object is computed by a physical simulation environment. It is constructed of a physical engine, which processes computation of rigid body dynamics. Computation of fluid dynamics is additionally implemented to the environment so that motion in fluid is simulated faster than other computational methods. The environment read easily the three dimensional mesh data, which is commonly used by CAD systems, then computes and visualizes motion immediately. The experiment is optimizing shapes of Leonardo da Vinci's spiral wings. Parameters of the spiral wing are optimized by a particle swarm optimization (PSO) or a sequential search so that the wing flies higher under two conditions. PSO usually find better parameters than a sequential search and do about sixty times as faster as a sequential search. The environment computes virtual motion for twenty seconds in real time of one second. The shapes given by an optimization are difference each other according to the given conditions, and proper from viewpoint of fluid dynamics.
• Classification of oral/nasal simulated snores based on the acoustic properties
  Tsuyoshi Mikami; Yohichiro Kojima; Kazuya Yonezawa; Masahito Yamamato; Masashi Furukawa
  Journal of Biomechanical Science and Engineering, 7, 4, 433, 448, 2012, [Peer-reviewed]
  English, Scientific journal
• Automatic classification of oral/nasal snoring sounds based on the acoustic properties.
  Tsuyoshi Mikami; Yohichiro Kojima; Masahito Yamamoto; Masashi Furukawa
  Proceedings of The 37th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 609, 612, 2012, [Peer-reviewed]
  English, International conference proceedings
• Analysis of Neural Network of C.elegans by Converting into Bipartite Network.
  Keiu Harada; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  IJALR, 3, 1, 10, 21, 2012, [Peer-reviewed]
  Scientific journal
• Conflicting Information Propagation Model in Trust Network
  Takuya Komatsu; Masahito Yamamoto; Ikuo Suzuki; Masashi Furukawa
  6TH INTERNATIONAL CONFERENCE ON SOFT COMPUTING AND INTELLIGENT SYSTEMS, AND THE 13TH INTERNATIONAL SYMPOSIUM ON ADVANCED INTELLIGENT SYSTEMS, 1833, 1838, 2012, [Peer-reviewed]
  English, International conference proceedings
• Control of water flow to avoid twining of artificial seaweed
  J. Ogawa; I. Suzuki; M. Yamamoto; M. Furukawa
  PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 17TH '12), 17, 4, 654, 657, 2012, [Peer-reviewed]
  English, Scientific journal
• Swimming animats with musculoskeltal structure
  Masashi Furukawa; Michiko Watanabe; Akihiro Fukumoto; Ikuo Suzuki; Masahito Yamamoto
  Proc. of the IADIS Int. Conf. Computer Graphics, Visualization, Computer Vision and Image Processing 2012, CGVCVIP 2012, Part of the IADIS MCCSIS 2012, 7, 2, 37, 46, 2012
  English, International conference proceedings
• 模擬いびきに見られるSAS固有の音響的特徴
  三上剛; 小島洋一郎; 米澤一也; 山本雅人; 古川正志
  医療機器学, 82, 2, 228, 228, 日本医療機器学会, 2012
  Japanese, Scientific journal
• Study on evolution of the artificial flying creature controlled by neuro-evolution
  R. Ooe; I. Suzuki; M. Yamamoto; M. Furukawa
  PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 17TH '12), 838, 841, 2012, [Peer-reviewed]
  English, International conference proceedings
• Control of water flow to avoid twining of artificial seaweed
  J. Ogawa; I. Suzuki; M. Yamamoto; M. Furukawa
  PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 17TH '12), 17, 3-4, 654, 657, 2012, [Peer-reviewed]
  English, International conference proceedings
• 行為者の属性・関係構造による行為の動的変化を考慮したネットワーク成長モデル
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会論文誌, 52, 10, 2943, Information Processing Society of Japan (IPSJ), 15 Oct. 2011, [Peer-reviewed]
  Japanese, Scientific journal, A doer's action is dominated by his attribute and relationship. This relation-ship makes some network structure. The analysis of the network is based on this fundamental idea. We propose a new growing network model, which consists of coupled oscillators with their attributes on the network. We regard each oscillator and network as the doer act and relationship, respectively. Each oscillator is defined by its own characteristic frequency and phase as its attribute. The oscillator's phase is determined by differences between it and other oscillators' phase, both of which are connected on the network. This feature resembles the doer's action. We examine the properties and dynamics of the proposed model.
• Behavior emergence of a virtual creature living in complex environments
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  ARTIFICIAL LIFE AND ROBOTICS, 16, 2, 185, 189, Sep. 2011
  English, Scientific journal
• 複合型ビヘイビアによる円環構造弾性ロボットの自律行動獲得
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 77, 5, 476, 482, The Japan Society for Precision Engineering, 05 May 2011, [Peer-reviewed]
  Japanese, Scientific journal, A virtual elastic robot is proposed which has a body with multiple degrees of freedom. It is capable of fitting its body to the given surrounding environment. The intended robot is modeled by rigid objects connected by spring joints in a circular structure. Its control system manipulates spring actuators to realize elastic movements. This paper aims to acquire its control system for the robot to behave autonomously to adapt to various circumstances. A physical simulation is done to achieve given tasks for the elastic robot. The simulation result shows that the elastic robot achieve a simple locomotion task. Moreover, we conduct a learning experiment to adapt the robot to a complicated circumstance, in which an obstacle is placed. In order to allow the robot to adapt to there, we propose a composite behavior which consists of simple behaviors. The simulation results in forming a behavioral pattern of autonomous locomotion.
• 「観光と知能情報」宿泊施設の分類システムと自己評価
  山本雅人; 大内東
  人工知能学会誌, 26, 3, 272, 279, 社団法人人工知能学会, 01 May 2011
  Japanese
• Hotel Classification System and Self-Evaluation(Tourism Informatics and Artificial Intelligence)
  Yamamoto Masahito; Ohuchi Azuma
  Journal of Japanese Society for Artificial Intelligence, 26, 3, 272, 279, 社団法人人工知能学会, 01 May 2011
  Japanese, Scientific journal
• Acquisition of swimming behavior on artificial creature in virtual water environment
  Keita Nakamura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 99, 106, Springer, 2011, [Peer-reviewed]
  English, International conference proceedings
• Evolving amphibian behavior in complex environment
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 107, 114, Springer, 2011, [Peer-reviewed]
  English, International conference proceedings
• Acquisition of adaptive behavior for virtual modular robot using evolutionary computation
  Keisuke Yoneda; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 181, 188, Springer, 2011, [Peer-reviewed]
  English
• 結合振動子を用いたネットワーク成長のモデル化とその有効性の検証
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  第43回計測自動制御学会北海道支部学術講演会論文集, 43rd, 19, 22, 2011
  Japanese
• 結合振動子を用いたネットワーク成長モデルの提案とその評価
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会春季大会学術講演会講演論文集, 2011S, 637, 638, The Japan Society for Precision Engineering, 2011
  Japanese, 「行為を決定するのは，行為者の属性と自身を取り囲む関係構造である．」これはネットワーク分析における基本的な考え方である．本研究では，こうした関係による行為の動的変化，またそれに伴うネットワークの成長を結合振動子によりモデル化し，その性質や構造，成長におけるダイナミクスを調査する．更に実ネットワークとの比較を行い，提案モデルの有効性について検証する．
• Twitterにおける東日本大震災時の情報伝搬に関する研究
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会北海道支部学術講演会講演論文集, 91, 92, 2011
  Japanese, Symposium
• 仮想筋肉による人工生物の遊泳行動の解析
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会北海道支部学術講演会講演論文集, 43, 44, 2011
  Japanese, Symposium
• 弾性バネによって運動する人工生物の遊泳行動獲得
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会’11(Robomec’11), 2011, _1A1-O13_1, _1A1-O13_4, The Japan Society of Mechanical Engineers, 2011
  Japanese, Many real creatures have muscles to control their flexible movement. This study proposes a virtual muscle model and its control method for artificial swimming creature. The virtual muscles are composed of elastic springs for the uses of actuators. ANN controls these actuators. The virtual muscle's parameters and ANN's parameters are optimized for the creature to achieve proper swimming by EC and PSO. Using simulation results, the swimming of the artificial creature can be compared to the real swimming creature.
• 仮想水中環境における人工生物の遊泳行動獲得-仮想筋肉による運動制御-
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会春季大会学術講演会講演論文集, 2011S, 623, 624, The Japan Society for Precision Engineering, 2011
  Japanese, 生物は筋肉を制御することで柔軟な運動を実現している。そこで本研究では弾性バネで表現した仮想筋肉をアクチュエータとして行動する人工生物を対象とする。アクチュエータの制御器には人工ニューラルネットワークを使用し、仮想筋肉と人工ニューラルネットワークの各パラメータを進化的計算によって最適化することで遊泳行動を創発させる。その結果、獲得した行動を観察すると実際の生物に似た遊泳となっていることを確認した。
• 仮想筋肉による人工生物の遊泳行動獲得
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  第3回日本ロボット学会北海道ロボット技術研究専門委員会学術講演会, 47, 49, 2011
  Japanese, Symposium
• ウェブ上で構成される二部グラフのコミュニティ対応関係
  原田 恵雨; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回情報科学技術フォーラム講演論文集, 第3分冊, 3, 771, 772, 情報処理学会, 2011
  Japanese
• 有向グラフの二部グラフ化による二部コミュニティ対応関係の解析
  原田 恵雨; 鈴木; 育男; 山本; 雅人; 古川 正志
  第52回数理社会学会大会 第7回ネットワークが創発する知能研究会, 145, 149, 2011
  Japanese, Symposium
• 仮想水中環境における海藻モデルの絡み現象の開発
  小川 純; 鈴木; 育男; 山本; 雅人 正志
  情報処理北海道シンポジウム2011講演論文集, 173, 176, 2011
  Japanese, Symposium
• 仮想流体環境が人工生物の行動知能創発に及ぼす影響
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会’11(Robomec’11), 2011, _1A1-M11_1, _1A1-M11_4, The Japan Society of Mechanical Engineers, 2011
  Japanese, An environment plays an important role in behaviors acquisition for artificial creatures. Thus, the environment must obey the physical laws. In this paper, it is examined how the behavior differences appear when the artificial creature with wings, autonomously behaves in the air and water environment. We propose a simulation method for the artificial creature using evolutionary computation in two fluid environments with low computing cost. As a result of simulation, we verify that it is possible for the creature to acquire adaptive behaviors in different environments. After evolution, the creature behaves autonomously by leveraging effectively fluid forces in each virtual environment.
• 学習近傍を動的に制限したSOMを用いたコミュニティ分割手法
  小野寺; 大地; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 23, 24, 2011
  Japanese, Symposium
• 局所エネルギー最小化法におけるエッジクロス解消のための局所調整
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 39, 40, 2011
  Japanese, Symposium
• 重み付有向グラフを用いたWebインタフェース設計のための操作ログ解析
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回情報科学技術フォーラム講演論文集, 第3分冊, 3, 769, 770, 情報処理学会, 2011
  Japanese
• 巡回セールスマン問題に対する粒子群最適化法の一解法
  市瀬 光生; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会北海道支部学術講演会講演論文集, 53, 54, 2011
  Japanese, Symposium
• 枝交換交叉を用いた粒子群最適化法によるTSPの解法
  市瀬 光生; 鈴木; 育男; 山本; 雅人; 古川 正志
  第23回自律分散システム・シンポジウム講演論文集, 283, 286, 2011
  Japanese, Symposium
• 仮想物理環境におけるバッタモデルの姿勢制御を考慮した跳躍動作の獲得
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会秋季大会学術講演会講演論文集, 2011, 639, 640, The Japan Society for Precision Engineering, 2011
  Japanese, 跳躍動作は，踏切，空中，着地時でそれぞれ適切な連続する動作を必要とし，非常に複雑な動作である．その動作の検証や制御法の確立は，生物学，ロボット工学，CGアニメーションなど様々な分野で応用が可能である．本研究では，仮想物理環境下に跳躍モデルを作成し，連続する動作を学習で最適化することで，跳躍動作における制御法，十分な跳躍距離・高度，姿勢維持，着地動作を実現し，その有効性を検証する．
• 仮想物理環境における跳躍モデルの姿勢制御を考慮した連続跳躍動作の獲得
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会北海道支部学術講演会講演論文集, 45, 46, 2011
  Japanese, Symposium
• 仮想物理環境におけるバッタモデルの跳躍行動の獲得
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会’11(Robomec’11), 2011, _1A1-M01_1, _1A1-M01_4, The Japan Society of Mechanical Engineers, 2011
  Japanese, This paper proposes how to acquire successive jumping on artificial creature like a locust under the physical virtual environment. A concept of "behavior simple (BS) and behavior composed (BC)" is applied to the model. In order to realize successive jumping, its behavior is divided into two BSs, taking off and recovery motion. After two BSs are trained by use of the evolutionary artificial neural network (EANN), successive jumping can be acquired as BC.
• 仮想物理環境におけるバッタモデルの連続跳躍行動の獲得
  梅村 裕太; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回複雑系マイクロシンポジウム講演論文集, 3, 6, 2011
  Japanese, Symposium
• 局所クラスタリング組織化法を応用した分割統治法による大規模TSPの解法
  石川 和典; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会北海道支部学術講演会講演論文集, 57, 58, 2011
  Japanese, Symposium
• 局所クラスタリング組織化法を応用した大規模TSPの分割統治解法
  石川 和典; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会春季大会学術講演会講演論文集, 2011S, 643, 644, The Japan Society for Precision Engineering, 2011
  Japanese, 巡回セールスマン問題（TSP）は多く研究されている組合せ最適化問題のひとつである．本稿では局所クラスタリング組織化法の考え方に基づき，大規模TSPに対する新たな分割統治法を提案する．提案手法は従来の分割統治法とは異なり，一般形式のTSPに適用可能な手法である．数値計算実験では提案手法の大規模TSPに対する有用性を検証する．
• 状態遷移図を用いたWebインタフェース設計のための操作ログ解析
  辻本 陽平; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回複雑系マイクロシンポジウム公演論文集, 39, 42, 2011
  Japanese, Symposium
• 非対称コストのTSPに対するLCOの適用
  横山 想一郎; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 2011, 61, 64, 2011
  Japanese, Symposium
• 感染モデルを用いた情報伝播モデルの作成の実験
  小松 琢也; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 3, 6, 2011
  Japanese, Symposium
• 多様性のある人工生物の形態創発を目的とした進化の性質の解析
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  2011年度精密工学会秋季大会学術講演会講演論文集, 2011, 651, 652, The Japan Society for Precision Engineering, 2011
  Japanese, 本研究では、計算機内での仮想三次元物理環境における自律行動獲得の進化シミュレーションを通して、得られた生命から進化の性質の解析を行うことを目的とする。安定な進化とは、環境に応じて適切な形態を獲得可能なことである。つまり、進化には生物の形態の多様性が重要である。そこで、形態の多様性を保持する進化シミュレーションを実現し、生物の進化に必要な性質及びプロセスを抽出する。
• 多様性のある人工生物の形態創発に関する研究
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2011, 2011, _1A1-O08_1, _1A1-O08_3, The Japan Society of Mechanical Engineers, 2011
  Japanese, A method which co-evolves genotypes of the behavior and morphology is effective in creating the artificial creature. Specially, the diversity of the morphology is important for use of evolutionary computing, because the morphology needs to change itself due to a given task. In the paper, we aim to create the best artificial creature by using evolutionary computing in 3D physical surroundings. Specially, we focus on fluctuation of phenotype.
• 遺伝子型と表現型の関連性に着目した形態創発に関する研究
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2011S, 631, 632, 公益社団法人 精密工学会, 2011
  Japanese, 近年, 計算機技術の発展により人工生物を用いた研究が多く行われている. 人工生物の生成には, 行動と形態の遺伝子型を共に進化する方法が有効である. しかし従来研究では, 人工生物の遺伝子型と表現型の関連性を明らかした例は少ない. そこで本研究では, 遺伝子型に加える制約と表現型との関連性について明らかにする. 特に, 遂行するタスクの特徴を考慮した場合について, 三次元物理シミュレーションにより解析を行う.
• 物流センターのピッキング作業へのJSPの適用
  岩崎 幸安; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 99, 102, 2011
  Japanese, Symposium
• 大規模物流センターにおける集配計画の研究
  岩崎 幸安; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本機械学会2011年度年次大会講演論文集, 2011, _S142012-1, _S142012-4, The Japan Society of Mechanical Engineers, 2011
  Japanese, To efficiently control the logistic center, several problems occur to solve them. One of them is an order-picking problem. This problem is to assign picking items to workers and to determine picking navigation route. However, some schedule often makes a queue at the specific shelves. This study proposes a new scheduling method whose solution avoid such a queue as possible as it can. For this purpose, the order-picking problem is transformed into the job-shop problem (JSP) and Local Clustering Method (LCO) is applied to the JSP. The new method is verified to be efficient by comparing its solution with the preference rule's one.
• 蝶の飛行制御におけるANNの汎化能力に関する研究
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会’11(Robomec’11), 2011, _1A1-P02_1, _1A1-P02_4, The Japan Society of Mechanical Engineers, 2011
  Japanese, We propose a simple physics model of a butterfly and its flight control by the real-coded genetic algorithm (RCGA) and the artificial neural network (ANN). A physics model consists of two kinetic equations which are led by simplification of the fluid force. A butterfly's flight is controlled by an ANN. The RCGA optimizes weights of the ANN for obtaining the suitable flight. After evolution, the generality of the optimized ANN is investigated by changing an initial height at which a butterfly starts in flight. Then it is shown that the flying creature enough evolved can not keep at the aimed height when the initial height is set far from the initial height used in evolution. Investigation by changing generality of the ANN in evolution shows that too much optimization may reduce the generality of the ANN.
• ジョブの先行関係が半順序であるJSPの解法
  田村 康将; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 55, 60, 2011
  Japanese, Symposium
• 物流センターの集配計画へのジョブショップスケジューリング問題の適用
  岩崎 幸安; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回複雑系マイクロシンポジウム講演論文集, 29, 32, 2011
  Japanese, Symposium
• 様々な形態的特徴を持つ人工生物に対する自律行動アニメーション生成
  岩館 健司; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会’11(Robomec’11), 2011, _1A1-M09_1, _1A1-M09_3, The Japan Society of Mechanical Engineers, 2011
  Japanese, In this study, we aim to evolving autonomous virtual creatures which have various shapes in a complex environment. We implement a basic physics law and fluid influences with a virtual environment and evolve virtual creature in various environments. We adopt central pattern generator as controller of the virtual creature. Each model obtains an effective moving behavior in physical environment.
• シェルピンスキーのギャスケットを用いた階層型データの可視化
  田中 航介; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 11, 12, 2011
  Japanese, Symposium
• ユーザのコミュニティ分割を用いたWebインタフェース設計のための操作ログ解析
  滝見 優太; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回情報科学技術フォーラム講演論文集, 第3分冊, 3, 773, 774, 情報処理学会, 2011
  Japanese
• リンク重みの増加・減衰を考慮した重み付きネットワークのネットワークモデルの提案
  滝見 優太; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2011講演論文集, 9, 10, 2011
  Japanese, Symposium
• ユーザのクラスタリングを用いたWebインタフェース設計のための操作ログ解析
  滝見 優太; 鈴木; 育男; 山本; 雅人; 古川 正志
  第10回複雑系マイクロシンポジウム講演論文集, 43, 47, 2011
  Japanese, Symposium
• 複合型タスクに対する多自由度ロボットの自律移動行動の形成
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2011, 2011, _1A1-O01_1, _1A1-O01_4, The Japan Society of Mechanical Engineers, 2011
  Japanese, An elastic robot is proposed which has a body with multiple degrees of freedom. This study focuses to allow the elastic robot to behave autonomously. A physical simulation is implemented to achieve given tasks for the virtual elastic robot. We assume a complicated task to acquire locomotion in which an obstacle is placed. We conduct a parameter optimization of control system by Evolutionary Computation. Moreover, in order to design an intelligent behavior, this paper proposes "Behavior Composed" which consists of several simple behaviors. Experimental results show that the robot is capable of acquiring locomotion in specific circumstances.
• 自律分散型 Behavior Composed による弾性ロボットの行動制御
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  第23回自律分散システムシンポジウム, 2011
  Japanese, Symposium
• Virtual Fluid Environment on Behavior Ability for Artificial Creature
  Keita Nakamura Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the Eleventh European Conference on the Synthesis and Simulation of Living Systems, 581, 588, MIT Press, 2011, [Peer-reviewed]
  English, International conference proceedings
• Emergence of Behavior Intelligence on Artificial Creature in Different Virtual Fluid Environments
  Keita Nakamura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE SIXTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 16TH '11), 617, 620, 2011, [Peer-reviewed]
  English, International conference proceedings
• A Physics Modeling of Butterfly's Flight Control by GA and ANN and Its Over-evolution Problem
  R. Ooe; I. Suzuki; M. Yamamoto; M. Furukawa
  PROCEEDINGS OF THE SIXTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 16TH '11), 613, 616, 2011, [Peer-reviewed]
  English, International conference proceedings
• Behavioral Acquisition of Complicated Locomotion for Artificial Elastic Robot using Decentralized Behavior Composed
  Keisuke Yoneda Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the 11th European Conference on Artificial Life, 882, 889, MIT Press, 2011, [Peer-reviewed]
  English, International conference proceedings
• Acquisition of adaptive behavior for virtual modular robot using evolutionary computation
  Keisuke Yoneda; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 181, 188, Springer, 2011, [Peer-reviewed]
  English, International conference proceedings
• 宿泊施設の分類システムと自己評価
  山本 雅人; 大内
  人工知能学会誌, 26, 3, 272, 279, 2011, [Peer-reviewed]
  Japanese, Scientific journal
• コミュニティの対応関係を考慮した二部モジュラリティによるコミュニティ分割
  原田 恵雨; 鈴木; 育男; 山本; 雅人; 古川 正志
  コンピュータソフトウェア, 28, 1, 127, 134, 日本ソフトウェア科学会, 2011, [Peer-reviewed]
  Japanese, Scientific journal
• Acquisition of swimming behavior on artificial creature in virtual water environment
  Keita Nakamura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 99, 106, 2011, [Peer-reviewed]
  English, Scientific journal
• Behavior emergence of virtual creature living in complex environments
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  PROCEEDINGS OF THE SIXTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 16TH '11), 16, 2, 621, 624, 2011, [Peer-reviewed]
  English, Scientific journal
• Evolving amphibian behavior in complex environment
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 107, 114, Springer, 2011, [Peer-reviewed]
  English, International conference proceedings
• "Behavior composed" for Artificial Flying Creature
  Masashi Furukawa; Makoto Morinaga; Ryosuke Ooe; Michiko Watanabe; Ikuo Suzuki; Masahito Yamamoto
  Journal of Advanced Computational Intelligence and Intelligent Informatics, 15, 7, 838, 845, Fuji Technology Press, 2011, [Peer-reviewed]
  English, Scientific journal
• "Behavior composed" for Artificial Flying Creature
  Masashi Furukawa; Makoto Morinaga; Ryosuke Ooe; Michiko Watanabe; Ikuo Suzuki; Masahito Yamamoto
  Journal of Advanced Computational Intelligence and Intelligent Informatics, 15, 7, 838, 845, 2011, [Peer-reviewed]
  English, Scientific journal
• ACQUISITION OF JUMPING BEHAVIOR ON THE ARTIFICIAL CREATURE UNDER VIRTUAL PHYSICAL ENVIRONMENT
  Yuta Umemura; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  ECTA 2011/FCTA 2011: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON EVOLUTIONARY COMPUTATION THEORY AND APPLICATIONS AND INTERNATIONAL CONFERENCE ON FUZZY COMPUTATION THEORY AND APPLICATIONS, 311, 314, 2011, [Peer-reviewed]
  English, International conference proceedings
• Evolving amphibian behavior in complex environment
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5777, 1, 107, 114, 2011
  English, International conference proceedings
• Acquisition of Swimming Behavior on Artificial Creature in Virtual Water Environment
  In Advances in Artificial Life, 99, 106, 2011
• Anibot - Animation robot for a life
  Masashi Furukawa; Michiko Watanabe; Ikuo Suzuki; Masahito Yamamoto
  Proc. of the IADIS Int. Conf. Computer Graphics, Visualization, Computer Vision and Image Processing 2011, Part of the IADIS Multi Conf. on Computer Science and Information Systems 2011, MCCSIS 2011, 123, 132, 2011
  English, International conference proceedings
• Community extraction by bipartite modularity cosidering community relations
  Keiu Harada; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Computer Software, 28, 1, 127, 134, Japan Society for Software Science and Technology, 2011
  Japanese
• Realization of dynamic interaction of virtual creatures with neural controller
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  2011 IEEE/SICE International Symposium on System Integration, SII 2011, 714, 719, 2011, [Peer-reviewed]
  English, International conference proceedings
• Analysis of Neural Network of C.elegans by Converting into Bipartile Network
  Proceedings of the 15th Asia Pacific Symposium on Intelligent and Evolutionary Systems, 97, 102, 2011
• Acquisition of Locomotion for Modular Robot With Annular Shape Using Evolutionary Computation
  米陀佳祐; 鈴木育男; 山本雅人; 古川正志
  精密工学会誌(CD-ROM), 76, 12, 1351, 1357, The Japan Society for Precision Engineering, 05 Dec. 2010
  Japanese, There are many studies on hardware and software experiments to control a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of them is that the modular robot behavior obtained by an each module movement is based on local communications between linked modules. This study focuses on a computer simulation for a virtual modular robot obeying physics laws. This simulation aims at achieving given tasks autonomously for the virtual modular robot in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to analyze and evaluate their behavior.
• 結合振動子を用いたネットワーク成長のモデル化
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回(社)計測自動制御学会システムインテグレーション部門講演会論文集, 2060, 2063, Dec. 2010
  Japanese, Symposium
• 仮想水中環境における弾性バネを用いた人工生物の遊泳獲得
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回(社)計測自動制御学会システムインテグレーション部門講演会論文集, 2056, 2059, Dec. 2010
  Japanese, Symposium
• 同期的構造最適化により創発される振動子ネットワークの特徴解析
  岩根 慎司; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回(社)計測自動制御学会システムインテグレーション部門講演会論文集, 2046, 2049, Dec. 2010
  Japanese, Symposium
• 人工生物のための形態創発に関する基礎研究
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  第11回(社)計測自動制御学会システムインテグレーション部門講演会論文集, 2043, 2045, Dec. 2010
  Japanese, Symposium
• Solving for Large-Scale Traveling Salesman Problem with Divide-and-Conquer Strategy
  Kazunori Ishikawa Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent systems (SCIS & ISIS 2010), 1168, 1173, Dec. 2010, [Peer-reviewed]
  English, International conference proceedings
• Acquisition of Locomotion for Elastic Circular Robot by using Composite Behavior
  Keisuke Yoneda Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent systems (SCIS & ISIS 2010), 1162, 1167, Dec. 2010, [Peer-reviewed]
  English, International conference proceedings
• A Study on Visualization of Complex Networks Using DSSOM
  Ikuo Suzuki; Yasushi Iwata; Masahito Yamamoto; Masashi Furukawa
  Proceedings of the Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent systems (SCIS & ISIS 2010), 868, 873, Dec. 2010, [Peer-reviewed]
  English, International conference proceedings
• Behaivor Composed for Artificial Flying Creature
  Masashi Furukawa; Makoto Morinaga; Ryosuke Ooe Michiko Watanabe; Ikuo Suzuki; Masahito Yamamoto
  Proceeding of the Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent systems (SCIS & ISIS 2010), 861, 867, Dec. 2010, [Peer-reviewed]
  English, International conference proceedings
• 円環構造型モジュラーロボットの自律的移動行動の獲得
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 76, 12, 1351, 1357, The Japan Society for Precision Engineering, Dec. 2010, [Peer-reviewed]
  Japanese, Scientific journal, There are many studies on hardware and software experiments to control a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of them is that the modular robot behavior obtained by an each module movement is based on local communications between linked modules. This study focuses on a computer simulation for a virtual modular robot obeying physics laws. This simulation aims at achieving given tasks autonomously for the virtual modular robot in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to analyze and evaluate their behavior.
• Optimum Picking Navigation for Large-scale Logistic Center under Energy Minimization
  Makiko Takahashi Ikuo Suzuki; Masahito Yamamoto; Michiko Watanabe; Masashi Furukawa
  Proceedings of the 14th Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES2010), 305, 315, Nov. 2010, [Peer-reviewed]
  English, International conference proceedings
• Autonomous Locomotion Control for Multi-legged Virtual Robot
  Masahito Yamamoto Kazuya; Ojiri Ikuo Suzuki; Masashi Furukawa
  Proceedings of the 14th Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES2010), 206, 212, Nov. 2010, [Peer-reviewed]
  English, International conference proceedings
• Visualizing Complex Network by Use of Local Energy Minimization
  Masashi Furukawa Ryota; Shigeo Ikuo; Suzuki Masahito Yamamoto Michiko Watanabe
  Proceedings of the 14th Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES2010), 13, 22, Nov. 2010, [Peer-reviewed]
  English, International conference proceedings
• Quantifying Plural Corresponding Community in Bipartite Graphs
  Keiu Harada Ikuo Suzuki; Masahito Yamamoto; Masahshi Furukawa
  Proceedings of the 14th Asia Pacific Symposium on Intelligent and Evolutionary Systems (IES2010), 3, 12, Nov. 2010, [Peer-reviewed]
  English, International conference proceedings
• Autonomous Animated Robots
  Masahito Yamamoto
  The Second Joint Workshop of Hokkaido University and Korea Maritime University, 9, 1, 53, 59, International Journal of CAD/CAM, Nov. 2010, [Peer-reviewed]
  English, International conference proceedings
• CGのための蝶モデルの提案−物理法則に基づくモデル化と自律的制御−
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2010講演論文集, 2010, 159, 166, 情報処理学会北海道支部, Oct. 2010
  Japanese, Scientific journal
• 弾性バネをアクチュエータとする人工生物の遊泳獲得実験
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2010講演論文集, 2010, 139, 142, 情報処理学会北海道支部, Oct. 2010
  Japanese, Scientific journal
• 局所組み合わせ分割統治法による大規模TSPの解法
  石川 和典; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2010講演論文集, 2010, 43, 48, 情報処理学会北海道支部, Oct. 2010
  Japanese, Scientific journal
• 局面ネットワークを利用したHexゲーム戦略の提案
  本庄 将也; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2010講演論文集, 2010, 37, 42, 情報処理学会北海道支部, Oct. 2010
  Japanese, Scientific journal
• TSPにおけるPSOとLCOのハイブリッド
  市瀬 光生; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理北海道シンポジウム2010講演論文集, 2010, 33, 36, 情報処理学会北海道支部, Oct. 2010
  Japanese, Scientific journal
• Behavior Emergence of Virtual Creature that can Live in Different Environments
  Kenji Iwadate; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of International Conference on Advanced Mechatronics 2010 (ICAM 2010), 2010, 31, 36, The Japan Society of Mechanical Engineers, Oct. 2010, [Peer-reviewed]
  English, International conference proceedings, In this study, we aim at evolving autonomous virtual creatures which have complex shapes in a complex environment. We implement a basic physics law and fluid influences with a virtual environment and evolve artificial creatures in plural environments such as on the ground, and in the water. The model, which is evolved in a different environment, obtains effective different moving behaviors, walking and swimming in each environment.
• Emergence of Autonomous Behaviors on Elastic Circular Robot Consisting of Modular Units -Planning for a Task with Composite Behaviors-
  Keisuke Yoneda Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of International Conference on Advanced Mechatronics 2010 (ICAM 2010), 2010, 25, 30, The Japan Society of Mechanical Engineers, Oct. 2010, [Peer-reviewed]
  English, International conference proceedings, There are many studies on hardware and software experiments to control autonomous robots. We have focused the elastic robot which has a body with multiple degrees of freedom. The elastic robot consists of homogeneous or heterogeneous simple modules. A feature of them is that their behavior is obtained by an each module movement based on local communications between connected modules. A physical simulation on the computer is carried out to achieve tasks autonomously for a virtual elastic robot. Our goal is to acquire a control system in evolution to achieve a composite task in specific circumstances with and without a obstacle.
• Effect of Morphology to Swimming Ability for Artificial Creature in Under-water Environment
  Keita Nakamura Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of International Conference on Advanced Mechatronics 2010 (ICAM 2010), 2010, 19, 24, The Japan Society of Mechanical Engineers, Oct. 2010, [Peer-reviewed]
  English, Environment plays an important role of for behaviors acquisition in the field of Artificial Life (Alife) and evolving robotics. However, the conventional studies like K arl Sims' have not accurately considered influenced force by fluid. In this study, we approximately model the under-water environmental influence. And we propose a simulation method for artificial creature swimming in consideration of buoyancy and water drags as a virtual under-water environment based on the physics modeling. As a result of simulation, we verify that it is possible for artificial creature to swim like a real fish swimming behaviors in the under-water environment. Additionally we show the analysis of the acquired swimming behavior. Results are discussed on a relation between a shape of the artificial creature and an acquired swimming behavior.
• 自律的行動獲得に基づく仮想ロボットの開発
  山本 雅人; 岩館; 健司; 大江; 亮介; 鈴木; 育男; 古川 正志
  計測自動制御学会論文集, 46, 1, 1, 7, The Society of Instrument and Control Engineers, Oct. 2010, [Peer-reviewed]
  Japanese, Scientific journal, In this paper, we demonstrate a design of autonomous virtual robots and develop a design tool for autonomous virtual robots. A virtual robot can behave autonomously by using its own sensors and controllers on three-dimensional physically modeled environment. An approximate fluid environment model based on the drag force modeling is presented. The developed tool can simulate a physical environment at any time during the modeling process. A combinatorial use of neural network implementation for controllers and optimization method (genetic algorithm or particle swarm optimization) enables us to create autonomous behaviors of virtual robots.
• 新しい○○情報学 2)観光情報学
  川村秀憲; 鈴木恵二; 山本雅人; 松原仁
  情報処理, 51, 6, 642, 648, Information Processing Society of Japan (IPSJ), 15 Jun. 2010
  Japanese, 近年，観光はさまざまな分野で注目を集めている．団塊の世代が退職し余暇として観光に出かけているのはもちろん，日本の重要産業としても観光は存在感を増している．経済規模や関連産業も大きく広がっている．学術的な観点から見ると，観光の文化的側面や歴史についての研究はなされているが，工学的な研究対象としてはどこか避けられてきた感があった．しかし，インターネットやモバイルの普及が一巡し，情報技術がどうやって人々の幸せをプロデュースするかが重要な課題の1つとなっている今，観光について情報技術の観点から研究することの意義は深い．本稿では，観光情報学を概説するとともに国内外の研究動向について解説する．
• 2 Tourism Informatics(New Informatics)
  KAWAMURA Hidenori; SUZUKI Keiji; YAMAMOTO Masahito; MATSUBARA Hitoshi
  IPSJ Magazine, 51, 6, 642, 648, 一般社団法人情報処理学会, 15 Jun. 2010
  Japanese, 近年，観光はさまざまな分野で注目を集めている．団塊の世代が退職し余暇として観光に出かけているのはもちろん，日本の重要産業としても観光は存在感を増している．経済規模や関連産業も大きく広がっている．学術的な観点から見ると，観光の文化的側面や歴史についての研究はなされているが，工学的な研究対象としてはどこか避けられてきた感があった．しかし，インターネットやモバイルの普及が一巡し，情報技術がどうやって人々の幸せをプロデュースするかが重要な課題の1つとなっている今，観光について情報技術の観点から研究することの意義は深い．本稿では，観光情報学を概説するとともに国内外の研究動向について解説する．
• Animated Robotの研究−剛体モデリングツールの開発とその応用−
  岩館 健司; 米陀; 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  精密工学会誌, 76, 2, 232, 237, The Japan Society for Precision Engineering, 05 Feb. 2010, [Peer-reviewed]
  Japanese, Scientific journal, In this decade, physics animation which realizes a realistic motion of the object has attracted the attention of researchers. However, the physics animation with animate beings which have autonomous intelligence is still in the research phase. This study aims at developing a new physics modeling software to generate behaviors for virtual creatures which have complex shapes. Developed software has functions to create physics models which have complex shapes on GUI, simulate them in real time, and generate an autonomous behavior with Artificial Neural Network. This paper describes architecture of the software and several examples of motion generations.
• Development of Virtual Robot Based on Autonomous Behavior Acquisition
  YAMAMOTO Masahito; IWADATE Kenji; OOE Ryosuke; SUZUKI Ikuo; FURUKAWA Masashi
  計測自動制御学会論文集 = Transactions of the Society of Instrument and Control Engineers, 46, 1, 1, 7, 計測自動制御学会, 31 Jan. 2010
  Japanese, Scientific journal, In this paper, we demonstrate a design of autonomous virtual robots and develop a design tool for autonomous virtual robots. A virtual robot can behave autonomously by using its own sensors and controllers on three-dimensional physically modeled environment. An approximate fluid environment model based on the drag force modeling is presented. The developed tool can simulate a physical environment at any time during the modeling process. A combinatorial use of neural network implementation for controllers and optimization method (genetic algorithm or particle swarm optimization) enables us to create autonomous behaviors of virtual robots.
• ノード特性とコミュニティ情報を考慮したシナジーテックなネットワーク成長モデル
  三好 栄次; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会研究報告「数理モデル化と問題解決」(MPS-80), 2010, 17, 1, 6, 一般社団法人情報処理学会, 2010, [Peer-reviewed]
  Japanese, Scientific journal, 多くのネットワーク成長モデルの研究は,ノードの特性を考慮せず,トポロジ的構造のみに注目している.しかし実在する多くのネットワークは構成要素であるノードの特性にも影響を受ける.ノードの特性においても,ネットワークのコミュニティ構造形成に影響を与えていると考えられ,また,このコミュニティ構造はネットワークの成長に影響を与える.本研究では,既存のネットワーク成長モデルに対し,局所コミュニティ抽出方法を適用し,ネットワーク成長のルールにコミュニティ情報を付加した成長モデルの提案を行う.また,提案手法を適用したネットワークに対し,クラスタリング系数,パス長等の特徴量を観測し,ネットワークの成長過程について実際のネットワークデータと提案モデルのデータ比較を行う.
• 大規模物流センターの割り込みスケジューリングの研究−再スケジュールにかかる時間を考慮した構内物流スケジューリング−
  高橋 麻希子; 渡辺; 美知子; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 711, 712, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, In order to ship ordered products based on ordered papers within due days, it is requested to control the logistic center effectively. We have proposed a new scheduling method on the order-picking problem in a large-scale logistic center based on ′Local Clustering Organization (LCO)′. This paper proposed the schedule method that considered the interrupt time. We improve the traditional method and prove the effectiveness of the proposed method.
• 制約充足問題のための局所クラスタリング組織化法の適用
  猿島 悠輔; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 705, 706, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 制約充足問題は変数の集合と変数それぞれが値を取る有限で離散的な領域から値を選択し，制約条件下において制約を満足するような状態を発見するクラスNPに属する問題であり，人工知能・探索問題など組合せ最適化問題を対象とした研究が行われている．本研究では，近似解法として局所クラスタリング組織化法を用い制約充足問題への適用方法の考案と従来手法との比較実験により評価し，適用可能性を報告する．
• 物理法則に基づく蝶モデルの飛行
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 699, 700, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, To represent a more real butterfly′s flight than it was, a butterfly model is designed and simulations based on the physical law are performed. The physical engine library is used for calculation of the rigid-body dynamics, and a fast algorithm on the basis of the drag force is implemented additionally for the fluid dynamics. The wings are designed to be able to do the ″flapping″ and the ″feathering″. The flapping is a swing up and down motion of a wing, and the feathering is a twist motion of a wing. A butterfly model flaps according to the data given by measurement for a real butterfly. Feathering angles of wings are controlled by the artificial neural network, and its weights are optimized for a proper flight.
• 人工生物のための形態創発可能な遺伝子表現型に関する研究
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 695, 696, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 本研究では，進化的計算により仮想３次元物理環境下で，人工生物の形態を生成する方法を提案した．形態の遺伝子型は，プリミティブの形状情報とプリミティブの接続情報のそれぞれのリストで構成し，この表現に基づく遺伝演算を定義した．また，数値計算実験により，提案方法の有効性と生成された形態の多様性を示した．さらに，人工生物の形態と行動をある評価の下で相互に進化させる方法を提案し，簡単なタスク獲得実験を行った．
• 物理シミュレーションによる多関節アームロボットのロバストな行動の獲得
  蜂谷 俊泰; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 689, 690, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 本研究では多関節アームロボットの自律的な学習によるロバスト性を有した行動獲得を目的する。ロボットにあるタスクを与え、物理法則を考慮したシミュレーションによってその挙動のシミュレートを行う。ロボットは人工ニューラルネットワークによって制御し、そのパラメータを遺伝的アルゴリズムによって最適化を行うことで学習を行う。シミュレーション実験から得られたロボットの獲得した動作のロバスト性について考察する。
• 弾性体を制御する人工生物による遊泳行動獲得
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 685, 686, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 多くの生物は筋肉を制御して行動している。そこで本研究では筋肉を弾性体バネモデルで表現し、その弾性体をアクチュエータとして行動する遊泳人工生物を対象とする。アクチュエータの制御器には人工ニューラルネットワークを用い、その結合荷重を進化的計算によって最適化することで遊泳行動を創発させる。その結果、数値計算シミュレーションにより遊泳行動を観察すると、実際の生物にも見られるＳ字状運動による遊泳を獲得した。
• 物流センター内の商品配置最適化法の提案
  坂本 延寛; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会秋季大会学術講演会講演論文集, 2010A, 679, 680, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 本研究では，物流センターにおいて商品のピッキング業務に要する時間を削減することを目的とし，一日の注文伝票に基づくピッキング時間を評価値とする商品配置最適化方法を提案する．さらに，実際の物流センターのデータを用いた数値計算実験によりその有効性を検証するとともに，最適化後の商品配置の複数の伝票集合に対する有効性も検証する．
• Webタグの情報粒度を考慮したWebネットワーク構造の階層クラスタリング
  竹内 尚; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 2010, 79, 80, 精密工学会北海道支部, 2010
  Japanese, Scientific journal
• LCOによる制約最適化問題への適用
  猿島 悠輔; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 2010, 75, 76, 精密工学会北海道支部, 2010
  Japanese, Scientific journal
• シミュレーションによる天井移動ロボットの行動の獲得と解析
  白石 直樹; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 2010, 73, 74, 精密工学会北海道支部, 2010
  Japanese, Scientific journal
• 物理シュミュレーションによる多関節アームロボットのタスク獲得
  蜂谷 俊泰; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 2010, 61, 62, 精密工学会北海道支部, 2010
  Japanese, Scientific journal
• 抗力による蝶モデルの羽ばたき飛行解析
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 23, 24, 精密工学会北海道支部, 2010
  Japanese, Symposium
• 風影響下におけるトンボモデルの飛翔学習
  徐 拓; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会北海道支部学術講演会講演論文集, 2010, 21, 22, 精密工学会北海道支部, 2010
  Japanese, Scientific journal
• 大規模TSPの局所組み合わせ部分問題最適化による大域的最適化法
  石川 和典; 鈴木; 育男; 山本; 雅人; 古川 正志
  第20回インテリジェント・システム・シンポジウム(FAN2010)講演論文集, 2010
  Japanese, Symposium
• PSOとLCOのハイブリッドによるTSPの解法
  市瀬 光生; 鈴木; 育男; 山本; 雅人; 古川 正志
  第20回インテリジェント・システム・シンポジウム(FAN2010)講演論文集, 2010
  Japanese, Symposium
• Webページの情報粒度を考慮したタグを利用した階層クラスタリングの生成
  竹内 尚; 鈴木; 育男; 山本; 雅人; 古川 正志
  第20回インテリジェント・システム・シンポジウム(FAN2010)講演論文集, 2010
  Japanese, Symposium
• 複雑ネットワークの特徴量に基づくHexゲーム戦略の解析
  本庄 将也; 鈴木; 育男; 山本; 雅人; 古川 正志
  第9回情報技術フォーラム(FIT2010)講演論文集, 9, 2, 429, 430, FIT(電子情報通信学会・情報処理学会)運営委員会, 2010
  Japanese, 第9回情報科学技術フォーラム FIT2010(F分野:人工知能・ゲーム,一般論文)F-031
• Hexゲームの局面ネットワークの解析
  本庄 将也; 鈴木; 育男; 山本; 雅人; 古川 正志
  ネットワークが創発する知能研究会(JWEIN10)講演論文集, 11, 日本ソフトウェア科学会, 2010, [Peer-reviewed]
  Japanese, Scientific journal, Hexは簡単なルールの2人用ボードゲームであり，チェスや囲碁のように戦略的な奥深さがあるゲームとして知られ，コンピュータAIの研究もされている．Hexの任意の盤面の状態は自分と相手のネットワークとして表現でき，勝利条件は辺ノードを直接接続することへ変化する．本研究では，熟練者の手筋に現れるネットワークの特徴を，ノード間の媒介性の指標であるk-寄与度を提案し，それを用いた解析により得られた特徴を反映させた，最短経路以外の経路も考慮する，Hexの局面の新たな評価手法を提案する．
• 同期的ネットワーク構造最適化により創発されるネットワークの特徴解析
  岩根 慎司; 鈴木; 育男; 山本; 雅人; 古川 正志
  ネットワークが創発する知能研究会(JWEIN10)講演論文集, 7, 日本ソフトウェア科学会, 2010, [Peer-reviewed]
  Japanese, Scientific journal, 蔵本モデルをネットワークに拡張した結合振動子ネットワークに関する解析的な議論が多くなされている．
  本論文では，結合振動子ネットワークにおいて同期の強さを測る示標であるコヒーレンスを最大化するネット
  ワーク構造を得る最適化実験を行い，その結果，創発されたネットワークの構造的特徴と固有振動数分布に
  関して解析を行うことで,強い同期を実現するネットワークが有する一般的な特徴を明らかにする．
• 行為者の属性・関係構造を考慮した ネットワーク成長モデルとそのダイナミクス
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  ネットワークが創発する知能研究会(JWEIN10)講演論文集, 4, 日本ソフトウェア科学会, 2010, [Peer-reviewed]
  Japanese, Scientific journal, 「行為を決定するのは，行為者の属性と自身を取り囲む関係構造である．」これは複雑ネットワーク科学の
  研究がなされる以前から社会学等でも扱われてきた，ネットワーク科学における基本的な考え方である．本研究では，こうした関係構造を結合振動子を用いてモデル化し，その性質や構造，成長におけるダイナミクスを明らかにする．更に，ノード間の相互作用とネットワークの成長の関係性について明らかにする．
• 弾性体を用いた人工生物の遊泳行動獲得
  福本 晃宏; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2P1, G14(1)"-"2P1-G14(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, There are many studies to control the torque of the joint about the behavior of the artificial creature. But the real creature acts by the control of the muscle. In this study, I account elastic spring as a muscle and assume it to be the actuator of the artificial creature. And I let an artificial creature get a swimming behavior in virtual underwater environment.
• 仮想水中環境下における人工生物の形状と遊泳能力の関係
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010
  Japanese, Symposium
• 結合振動子を用いたネットワーク成長モデルとそのダイナミクス
  小笠原; 寛弥; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2P1, G04(1)"-"2P1-G04(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, A new growing network model, which consists of coupled oscillators, is proposed. The network is growing up depending on two parameters, namely the coupling strength and network degree of oscillator. The criteria represented by H. Hong and M. Y. Choi is introduced into the model to make the network grow. The network feature and its growing dynamics are examined from a viewpoint of two parameters through numerical experiments. Obtained results show that the proposed model realizes some networks observed in a real world.
• 人工生物のための遺伝子表現型に関する研究
  萬谷 和之; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2P1, F29(1)"-"2P1-F29(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, In this paper, we aim at the generation of the complex and diverse artificial creatures, we propose the genotype of the morphology of the artificial creature and the generating method based on that genotype. The results of our experiments show our method has the diversity and the availability.
• 仮想環境内における飛行生物の羽ばたき飛行実験
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2P1, F27(1)"-"2P1-F27(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, In this paper, a virtual flying creature is modeled and its flight is simulated in a virtual environment. The virtual flying creature consists of a head, a body, a tail and two wings. It mainly flaps its wings for flying, and additionally tilts its wings for changing angles of elevation. The former motion is called flapping and the latter is called feathering. The virtual environment is made up of a physical engine library, which processes the motion and collision of rigid bodies, and a drag force expressing the force from fluid. Numerical experiments show the followings; (1) A virtual flying creature can fly by the flapping, and (2) The feathering changes the way to fly.
• 振動子ネットワークの構造変化における振動子の挙動の解析
  岩根 慎司; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2P1, F26(1)"-"2P1-F26(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, This paper investigates a synchronizing phenomenon of oscillators, coupled together in the form of the evolving complex network. The change in the network structure in the oscillator network considered changed of the network characteristics and distribution of natural frequency. The influence that the change in the network structure gave to the behavior of the oscillator in that case was investigated by the numerical experiments.
• 評価値基準によるLCOを用いた二次割当問題への適用
  古川 正志; 山本; 雅人; 鈴木; 育男; 猿島 悠輔
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, G08(1)"-"2A2-G08(2)", The Japan Society of Mechanical Engineers, 2010
  Japanese, Quadratic Assignment problem (QAP) is Combinatorial optimization in NP-hard. Many methods have been applied to QAP, such as a branch and bound method, genetic algorithm, simulated annealing and taboo search and local clustering organization (LCO). In these Algorithms LCO can solved QAP faster than other methods. In this study we propose new method to solve QAP using LCO and proved that it can solve QAP more the effectiveness of the proposed method.
• 分割統治型LCOによる大規模TSPの解法
  石川 和典; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, G06(1)"-"2A2-G06(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, The smaller the electroinc device becomes, the more the printed board becomes complex. Such a printed board requests for an NC boring machine to drill a fiw hundred thousand of holes. In order to efficiently drill holes, a drilling path must be as short as possible. This path planning is regarded as a large-scale TSP. This study proposed a new solution, which adopts LCO using "a divide and conquer strategy", for the large-scale TSP. Numerical experiments proves that the proposed method is capable of solving the large-scale TSP with practical computation time and accuracy, comparing with conventional LCO.
• 物流センターにおける集配ナビゲーション手法の提案
  坂本 延寛; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, G03(1)"-"2A2-G03(2)", The Japan Society of Mechanical Engineers, 2010
  Japanese, This study aims to propose the order picking navigation method in distribution center. For this purpose, we propose new solutions for two main problems, an item placement and an order batching. The objective of these problems is minimizing the order picking time. Therefore, our proposed methods optimize the item placement and order batching by using the order picking time as the fitness function. Numerical experiments using the data of the existent distribution center prove that our proposed methods improve the efficiently of order picking time.
• 大規模物流センターの割り込み再スケジュール
  高橋 麻希子; 渡辺; 美知子; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, F28(1)"-"2A2-F28(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, The large-scale logistic center has played an important role in the mail order and Internet dealing system. In order to ship products based on customer order papers within due days, it is requested to control the logistic center effectively. This study focuses on the order-picking problem, one of problems efficiently to control the logistic center. A new criterion "Energy Minimization" is introduced into this problem. Then, LCO (Local Clustering Optimization) is applied to solve the problems. Based on above, this study is extended to the re-scheduling when urgent interrupt orders are requested. A re-scheduling method is proposed how the urgent interrupt orders are assigned and mixed into pre-determined schedule the proposed method based on LCO as well. The influence by the urgent interrupt is examined by simulation experiments, and we prove the effectiveness of the proposed method.
• 物理モデリングによる多脚型天井移動ロボットの制御獲得
  白石 直樹; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, F21(1)"-"2A2-F21(2)", The Japan Society of Mechanical Engineers, 2010
  Japanese, We have studied an acquisition of ceiling control of multi-legged robot by simulation using physics modeling. In this study, we propose hanging robot model, and simulate an hanging control on some ceiling with difference projection. As a result, we present the proposed model can hang on some type ceiling.
• TSPにおけるLCOのハイブリッドに関する研究
  市瀬 光生; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, F19(1)"-"2A2-F19(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, In this paper, we propose LCO Hybrid solutions for TSP. LCO is fine method for TSP, but once fall in local optimal solutions, LCO cannot escape from local optimal solutions. The results of our experiments show LCO Hybrids obtain more fine solutions than original LCO.
• 物理シミュレーションによる多関節ロボットアームの手の平タスク獲得
  蜂谷 俊泰; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A2, F17(1)"-"2A2-F17(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, This study aims at an acquisition of behaviors of a multi jointed arm under the virtual physics environment. The arm is controlled by a neural network. For this purpose, weights of the neural network are optimized by genetic algorithm. We give the task that is to continue bouncing a ball on a palm to this arm, and simulate how to control this arm under the virtual physics environment. It is verified that the arm obtains a proper behaviors through the simulation.
• 円環構造型弾性ロボットの進化計算によるロコモーション形成について
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  ロボティクス・メカトロニクス講演会2010 (Robomec 2010), 2010, "2A1, F26(1)"-"2A1-F26(4)", The Japan Society of Mechanical Engineers, 2010
  Japanese, There are many studies on hardware and software experiments to control autonomous robots. This study has focused the elastic robot which has a body with multiple degrees of freedom. The elastic robots consist of homogeneous or heterogeneous simple modules. A feature of them is that their behavior is obtained by an each module movement based on local communications between linked modules. A physical simulation on the computer is carried out to achieve given tasks autonomously for a virtual elastic robot. Our goal is to acquire a control system in evolution and to analyze a motion mechanism for the obtained behavior.
• 1A2-F25 Is there chaos in snoring sounds?
  MIKAMI Tsuyoshi; KOJIMA Yohichiro; YAMAMOTO Masahito; FURUKAWA Masashi
  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2010, 0, _1A2, F25_1-_1A2-F25_4, The Japan Society of Mechanical Engineers, 2010
  Japanese, This paper investigates chaotic properties of snoring sounds by a correlation dimension analysis, which is generally used to verify the existence of chaos in a time series. The ultimate goal of this study is to extract useful information from the nonlinear properties of snores so as to diagnose obstructive sleep apnea. For such purpose, many researchers have examined snoring sounds by linear frequency analysis such as Fourier Transform or Linear Predictive Coding, but the chaotic properties of snores have not been clarified so far and the existence of chaos has not yet been proved also. The authors adopt Grassberger-Procaccia method to determine the correlation dimension of snore attractors quantitatively.
• Webタグの階層的クラスタリング手法の提案
  竹内 尚; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会創立50周年記念(第72回)全国大会講演論文集, 2, 人工知能と認知科学, 75, 76, 情報処理学会, 2010
  Japanese, 情報処理学会創立50周年記念(自然言語処理(2),一般セッション,人工知能と認知科学) 5D-6
• コミニュティ構造の影響を考慮したネットワーク成長モデルの提案
  三好 栄次; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会創立50周年記念(第72回)全国大会講演論文集, 1, 269, 270, 2010
  Japanese, Symposium
• 振動子ネットワークからみた同期現象におけるネットワーク構造の変化
  岩根 慎司; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会創立50周年記念(第72回)全国大会講演論文集, 1, 1, 267, 268, 一般社団法人情報処理学会, 2010
  Japanese, Scientific journal, 情報処理学会創立50周年記念 (アルゴリズム,一般セッション,ソフトウェア科学・工学) 6A-3
• 局所エネルギー最小可視化によるネットワークの大域的可視化
  茂尾 亮太; 鈴木; 育男; 山本; 雅人; 古川 正志
  情報処理学会創立50周年記念(第72回)全国大会講演論文集, 1, 265, 266, 2010
  Japanese, Symposium
• 二次割り当て問題における局所クラスタリング組織化法の適用
  猿島 悠輔; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 341, 342, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 組合せ最適問題には，巡回セールスマン問題，ジョブショップスケジューリング問題，割り当て問題などがある．割り当て問題における二次割り当て問題はLSI技術などの工学的応用が多い問題であるが，NP完全であるため大規模問題では最適解を求める事が困難であるとされている．本研究では，巡回セールスマン問題で高速，高精度である事が示されている局所クラスタリング組織化法を適用し，二次割り当て問題への改良と評価実験を行う．
• 仮想環境内における飛行生物の行動に関する研究
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 337, 338, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, The flying creatures which have wings, such as the bird and part of the insects, take the complex motions. For example, the eagle circles over the upper air with no wing motion, and the bee has wings moving very quickly to hover over the flower. The purpose of our research is to analyze these complex motions of the flying creatures through the computer simulation. To simulate the motion of creatures we use the virtual environment. It consists of the physical engine library, which processes the motion and collision of rigid bodies, and the drag force expressing the force from a fluid. The creatures receive the sensor signals from the environment and output the torques to move their bodies according to the signals. We use the artificial neural network (ANN) as the controller converting the input into the output. Changing the weights of ANN using the real coded genetic algorithm, we evolve the creatures to acquire the complex behavior.
• 物理モデリングによる天井移動体の行動獲得
  白石 直樹; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 331, 332, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 近年，様々な用途でのロボットの需要が高まっており，それに伴い様々な環境を想定したロボットの行動開発が行われている．従来，地上での行動については盛んに研究が行われてきたが，壁面・天井移動についての研究例は少ない．本研究では，仮想物理空間に作成した天井移動体の行動獲得を目的とする．基礎実験として立方体型・球体型・網型の各突起物を設置した環境において把持実験を行い，作成したモデルの把持能力を検証した．
• 多様な形状の人工生物の遊泳行動知能創発
  中村 啓太; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 327, 328, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, We have studied behavior acquisition for artificial creatures swimming in consideration of buoyancy and water drags as a virtual under-water environment based on the physics modeling. It enables the artificial creature to swim like a rowing and a spindle type of fish swimming behaviors. This study we simulate polymorphic artificial creatures to acquire swimming behaviors. Results and discussed a relation between a shape of the artificial creature and a swimming behavior acquired.
• 人工トンボモデルの飛翔行動の獲得
  拓 徐; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 323, 324, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, トンボは昆虫の世界では非常に飛翔能力の高い生き物である．高速前進だけではなく，進行方向の急転換や空中停止やバック方向への飛翔もできる．このような飛翔動作をコンピュータ上で再現でするために，本研究ではトンボモデルを物理仮想空間内にモデル化し，その環境として空気抵抗を用いることにより，より簡単で現実感のあるトンボモデルの飛翔3Dアニメーションの獲得を目的とする．
• 物流センターにおける商品配置を考慮した伝票割当手法の提案
  坂本 延寛; 渡辺; 美知子; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010, 319, 320, The Japan Society for Precision Engineering, 2010
  Japanese, 物流センター内における主要な業務である，商品集配最適化は重要な課題である．この問題には，伝票割当，経路決定，商品配置等の最適化が含まれ，数多くの研究がなされている．本来，これらは相互に依存関係にあるが，従来研究ではあまり考慮されていない．本研究では，伝票に含まれる商品の位置関係や倉庫の形状を考慮した，伝票割当の最適化手法を提案し，実データを使用した実験によりその有効性を検証する．
• 大規模物流センターの割り込みスケジューリングの研究−割り込み時刻とオーダー数に応じたリアクティブスケジューリング−
  高橋 麻希子; 鈴木; 育男; 山本; 雅人; 渡辺; 美知子; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010, 315, 316, The Japan Society for Precision Engineering, 2010
  Japanese, In order to ship ordered products based on ordered papers within due days, it is requested to control the logistic center effectively. We have proposed a new scheduling method on the order-picking problem in a large-scale logistic center based on 'Local Clustering Organization (LCO)'. This paper propose a re-active scheduling method possible to treat pre-schedule interruption by urgent orders. Moreover, we prove the effectiveness of the proposed method through numerical experiments.
• 仮想物理環境における多関節ロボットアームのタスク獲得
  蜂谷 俊泰; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 311, 312, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 進化ロボティクスや人工生命の分野において、自律ロボットの制御に関する研究が行われている。本研究では仮想物理環境における多関節ロボットアームにあるタスクを与え、その挙動獲得の実現を目的とする。アームは遺伝的アルゴリズムにより人工ニューラルネットワークを学習させ、物理モデリングによるシミュレーションを実施した。この結果得られたアームの獲得したタスク動作を検証する。
• Central pattern generatorによる人工生物のアニメーション生成
  岩館 健司; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010, 93, 94, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, 動物の歩行や遊泳にみられるリズムパターンを生成するモデルとしてCentral pattern generatorがロボティクス，AIの分野で注目を集めている．本研究ではCentral pattern generatorを人工生物のコントローラとして導入し，仮想物理環境内に置いた人工生物に歩行，遊泳などの様々な行動を獲得させ，この結果をアニメーションとして検証した．
• 円環構造型モジュラーロボットの移動行動獲得とモジュール拡張性に関する考察
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  2010年度精密工学会春季大会学術講演会講演論文集, 2010S, 87, 88, The Japan Society for Precision Engineering, 2010
  Japanese, Scientific journal, There are many studies on hardware and software experiments to control a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of it is that the modular robot behavior is obtained by an each module movement based on local communications between linked modules. This study focuses on a computer simulation obeying physics laws for a virtual modular robot. This simulation aims at achieving given tasks autonomously for it in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to discuss about model scalability.
• 人工ニューラルネットワークによる人工生物の自律行動生成
  岩館 健司; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本ロボット学会北海道ロボット技術研究専門委員会(RSJ-HRT)学術講演会講演論文集, 29, 30, 2010
  Japanese, Symposium
• 仮想流体環境の提案と飛行生物のモデル化
  大江 亮介; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本ロボット学会北海道ロボット技術研究専門委員会(RSJ-HRT)学術講演会講演論文集, 7, 11, 2010
  Japanese, Symposium
• 円環構造型モジュラーロボットの自律行動獲得
  米陀 佳祐; 鈴木; 育男; 山本; 雅人; 古川 正志
  日本ロボット学会北海道ロボット技術研究専門委員会(RSJ-HRT)学術講演会講演論文集, 5, 6, 2010
  Japanese, Symposium
• Artificial Flying Creature by Flapping
  Masashi Furukawa; Makoto Morinaga; Michiko Watanbe; Ikuo Suzuki; Masahito Yamamoto
  2010 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010), 624, 629, 2010, [Peer-reviewed]
  English, International conference proceedings
• Community Extraction by Bipartite Modularity Using Communities Correspondence
  Keiu Harada Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of SWWS10 (The 2010 International Conference on Semantic Web and Web Services), 147, 151, CSREA Press, 2010, [Peer-reviewed]
  English, International conference proceedings
• Optimization of Vehicle Routing Problem by use of New Meta-Heuristics
  Nobuhiro Sakamoto; Michiko Watanabe Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Proceedings of 2010 International Symposium on Flexible Automation (ISFA), 2010, [Peer-reviewed]
  English, International conference proceedings
• 観光情報学
  川村 秀憲; 鈴木; 恵二; 山本; 雅人; 松原 仁
  会誌「情報処理」 特集：新しい◯◯情報学, 51, 6, 642, 648, 2010, [Peer-reviewed]
  Japanese, Scientific journal
• Artificial Flying Creature by Flapping
  Masashi Furukawa; Makoto Morinaga; Michiko Watanbe; Ikuo Suzuki; Masahito Yamamoto
  2010 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010), 624, 629, 2010, [Peer-reviewed]
  English, International conference proceedings
• A Study on Visualization of Complex Networks Using DSSOM
  Yasushi Iwata; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  IPSJ Journal, 50, 11, 2752, 2759, 一般社団法人情報処理学会, 15 Nov. 2009
  Japanese, Scientific journal, Visualizing complex networks is a useful technology to acquire new knowledge since it allows us to overlook a whole network characteristic at a glance. In this paper, Self-Organizing Map (SOM) is adopted for visualizing the network. A conventional visualization method named Inversed-SOM (ISOM) brings us a great benefit for visualization, but it has disadvantages to distort the network unnaturally. We improve ISOM to get rid of this disadvantage and propose a new visualization method named DSSOM (Dynamically-Signaling Self-Organizing Map). Numerical experiments prove that DSSOM overcomes network distortion in visualization and that it is free from a scale size of visualization.
• A Study on Order Picking Navigation in a Large-scale Logistic Center
  三添朗宏; 古川正志; 宮脇恵理; 渡辺美知子; 鈴木育男; 山本雅人
  精密工学会誌(CD-ROM), 75, 10, 1260, 1264, The Japan Society for Precision Engineering, 05 Oct. 2009
  Japanese, This study developed an efficient order picking scheduling method in a large-scale logistic center. The proposed method consists of two solutions, one focuses on the picking tour navigation problem and another focuses on the order batch generation problem. The local clustering organization (LCO) algorithm is applied to determine the picking tour navigation. Then, the heuristic batch generation algorithm is introduced based on the product order similarity. Numerical experiments proved that the proposed method improved almost 16% of the order picking efficiency, comparing with the conventional method.
• A Study on Autonomous Animated Robots: Anibots
  Masahito Yamamoto; Kenji Iwadate; Ryosuke Ooe; Ikuo Suzuki; Masashi Furukawa
  2009 11TH IEEE INTERNATIONAL CONFERENCE ON COMPUTER-AIDED DESIGN AND COMPUTER GRAPHICS, PROCEEDINGS, 404, 409, 2009, [Peer-reviewed]
  English, International conference proceedings
• 観光情報学会誌にみる国内研究動向
  山本 雅人; 鈴木 育男; 古川 正志
  観光と情報, 5, 1, 97, 100, 観光情報学会, 2009
  Japanese
• A New Solution for Vehicle Routing Problem Using Local Clustering Organization
  Nobuhiro, Sakamoto; Ikuo, Suzuki; Michiko, Watanabe; Masahito, Yamamoto; Masashi, Furukawa
  Proceeings of the 20th National Conference of Australian Society for Operations Research & the 5th International Intelligent Logistics System Conference, 2009, 1, 83.1-83.14, 6, 一般社団法人情報処理学会, 2009
  Japanese, Scientific journal, 配送計画問題とは複数の車両を用いて倉庫から顧客へ品物を配送する経路長を最小化する問題である.この問題は,輸送,流通やロジスティクス等の分野の中心的な問題であり,数多くの実用的応用を持つ.また,この問題は NP 困難なクラスに属するため,厳密解法では問題の規模が増大すると実用的な時間内で最適解を得ることが難しく,近似解法,特にメタヒューリスティクスによる研究が多くなされてきた.本研究では,メタヒューリスティクス手法の一つである局所クラスタリング組織化法を用いた配送計画問題の解法を提案し,ベンチマーク問題を用いた数値計算実験によりその有効性を検証する.さらに,局所クラスタリング組織化法は大規模問題に適した手法であるため,ベンチマーク問題より問題規模の大きな問題をランダムに作成し,数値計算実験で大規模問題に対する有効性も同様に検証する.
• TIPS：その構想と開発
  精密工学会北海道支部発足50周年記念集, 41, 46, 2009
• A Study on Order Picking Navigation in a Large-scale Logistic Center
  MIZOE Akihiro; FURUKAWA Masashi; MIYAWAKI Eri; WATANABE Michiko; SUZUKI Ikuo; YAMAMOTO Masahito
  Journal of the Japan Society for Precision Engineering, 75, 10, 1260, 1264, The Japan Society for Precision Engineering, 2009
  Japanese, This study developed an efficient order picking scheduling method in a large-scale logistic center. The proposed method consists of two solutions, one focuses on the picking tour navigation problem and another focuses on the order batch generation problem. The local clustering organization (LCO) algorithm is applied to determine the picking tour navigation. Then, the heuristic batch generation algorithm is introduced based on the product order similarity. Numerical experiments proved that the proposed method improved almost 16% of the order picking efficiency, comparing with the conventional method.
• Autonomous Animated Robots
  Yamamoto Masahito; Iwadate Kenji; Ooe Ryosuke; Suzuki Ikuo; Furukawa Masashi
  International Journal of CAD/CAM, 9, 1, Online, 91, International Journal of CAD/CAM, 2009
  English
• Simulation and implement and verification for indoor balloon robot
  Toshihiko Takaya; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  IEEJ Transactions on Electronics, Information and Systems, 129, 1, 24, 188, Institute of Electrical Engineers of Japan, 2009
  English
• Large-scale DNA memory based on the nested PCR
  Masahito Yamamoto; Satoshi Kashiwamura; Azuma Ohuchi; Masashi Furukawa
  Natural Computing, 7, 3, 335, 346, Sep. 2008, [Peer-reviewed]
  English, Scientific journal
• Unravel four hairpins!
  Atsushi Kameda; Masahito Yamamoto; Azuma Ohuchi; Satsuki Yaegashi; Masami Hagiya
  Natural Computing, 7, 2, 287, 298, Jun. 2008, [Peer-reviewed]
  English, Scientific journal
• Studies on Modeling Environment for Physics Modeling
  Keita Nakamura; Makoto Morinaga; Kenji Iwadate; Keisuke Yoneda; Ikuo Suzuki; Masahito Yamamoto; Masashi Furukawa
  Conference Abstracts of Fourth International Symposium on Adaptive Motion of Animals and Machines (AMAM2008), Jun. 2008, [Peer-reviewed]
  English
• Capacity Analysis of DNA Memory Based on Mathematical Model
  YAMAMOTO MASAHITO; KASHIWAMURA SATOSHI; OHUCHI AZUMA
  情報処理学会論文誌数理モデル化と応用（TOM）, 49, 4, 36, 44, 一般社団法人情報処理学会, 15 Mar. 2008
  Japanese, We have developed a DNA Memory called NPMM with over 10 million (16.8M) addresses. The data embedded into a unique address was correctly extracted through addressing processes based on the nested PCR. In this paper, the addressing process of NPMM was modeled by using the combinatorial optimization problem in order to discuss the limitation of the scaling-up problem of NPMM.
• 5C-1 Network Smallworldness quantifying relations similarity between nodes
  Morioka Jun; Furukawa Masashi; Yamamoto Masahito; Suzuki Ikuo
  全国大会講演論文集, 70, 2, "2, 27"-"2-28", 一般社団法人情報処理学会, 13 Mar. 2008
  Japanese
• Development of the Research Platform of Small Autonomous Blimp Robot
  Toshihiko Takaya; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  ELECTRONICS AND COMMUNICATIONS IN JAPAN, 91, 2, 1, 13, Feb. 2008, [Peer-reviewed]
  English, Scientific journal
• DNA memory with 16.8M addresses
  Masahito Yamamoto; Satoshi Kashiwamura; Azuma Ohuchi
  DNA COMPUTING, 4848, 99, +, 2008, [Peer-reviewed]
  English, International conference proceedings
• Combining randomness and a high-capacity DNA memory
  Atsushi Kameda; Satoshi Kashiwamura; Masahito Yamamoto; Azuma Ohuchi; Masami Hagiya
  DNA COMPUTING, 4848, 109, +, 2008, [Peer-reviewed]
  English, International conference proceedings
• Sequence design support system for 4x4 DNA tiles
  Naoki Iimura; Masahito Yamamoto; Fumiaki Tanaka; Azuma Ohuchi
  DNA COMPUTING, 4848, 140, +, 2008, [Peer-reviewed]
  English, International conference proceedings
• Control of indoor balloon robot with time constraints
  Toshihiko Takaya; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  IEEJ Transactions on Electronics, Information and Systems, 128, 9, 8, 1461, Institute of Electrical Engineers of Japan, 2008, [Peer-reviewed]
  English
• Learning landing control of an indoor blimp robot for self-energy recharging
  Hidenori Kawamura; Masahito Yamamoto; Toshihiko Takaya; Azuma Ohuchi
  Artificial Life and Robotics, 12, 1-2, 116, 121, 2008, [Peer-reviewed]
  English, Scientific journal
• Sequence design support system for 4x4 DNA tiles
  Naoki Iimura; Masahito Yamamoto; Fumiaki Tanaka; Azuma Ohuchi
  DNA COMPUTING, 4848, 4848, 140, +, 2008
  English, Scientific journal
• DNA memory with 16.8M addresses
  Masahito Yamamoto; Satoshi Kashiwamura; Azuma Ohuchi
  DNA COMPUTING, 4848, 4848, 99, +, 2008
  English, Scientific journal
• Combining randomness and a high-capacity DNA memory
  Atsushi Kameda; Satoshi Kashiwamura; Masahito Yamamoto; Azuma Ohuchi; Masami Hagiya
  DNA COMPUTING, 4848, 4848, 109, +, 2008
  English, Scientific journal
• 大規模物流センターにおけるピッキングナビゲーション法の提案
  第7回複雑系マイクロシンポジウム, 27, 30, 2008
• Development of Modeling Tools for Animated Robot
  Conference Abstracts of Fourth International Symposium on Adaptive Motion of Animals and Machines (AMAM2008), 165, 166, 2008
• Evaluation of AGV Path Topology using Small Worlds' Characteristics
  Proceedings of Joint 4th International Conference on Soft Computing and Intelligent Systems and 9th International Symposium on advanced Intelligent Systems (SCIS & ISIS), 1870, 1875, 2008
• Synchronization Effects on Clustering Coefficient Characteristics in Scale-Free Networks
  Proceedings of Joint 4th International Conference on Soft Computing and Intelligent Systems and 9th International Symposium on advanced Intelligent Systems (SCIS & ISIS), 1882, 1887, 2008
• Self-Organizing Stock Assignment for Large-scale Logistic Center
  Masashi Furukawa; Yoshinobu Kajiura; Akihiro Mizoe; Michiko Watanabe; Ikuo Suzuki; Masahito Yamamoto
  IAS-10: INTELLIGENT AUTONOMOUS SYSTEMS 10, 164, 172, 2008
  English, International conference proceedings
• Complex Networks and Robotics
  FURUKAWA Masashi; YAMAMOTO Masato; SUZUKI Ikuo
  Journal of the Robotics Society of Japan, 26, 1, 2, 5, 一般社団法人 日本ロボット学会, 30 Dec. 2007
  Japanese
• Erratum: PID landing orbit motion controller for an indoor blimp robot (Artificial Life and Robotics (2006) vol. 10 (177-184) 10.1007/s10015-006-0385-9)
  Toshihiko Takaya; Hidenori Kawamura; Yoshihiro Minagawa; Masahito Yamamoto; Azuma Ohuchi
  Artificial Life and Robotics, 11, 2, 227, 227, Jul. 2007, [Peer-reviewed]
  English, Scientific journal
• Vision based control for line following blimp robot
  Ryouta Nishioka; Hidenori Kawamura; Masahito Yamamoto; Toshihiko Takaya; Azuma Ohuchi
  Proceedings of the 12th International Symposium on Artificial Life and Robotis, AROB 12th'07, 92, 95, 2007
  English, International conference proceedings
• Survey and comparison of European hotel classification systems
  KATALIN C.
  観光情報学会誌 「観光と情報」, 3, 1, 36, 44, 観光情報学会, 2007
  English
• Sequence Design Support System for 4x4 DNA Tiles
  Preliminary Proceedings of the 13th International Meeting on DNA Computing, 270, 278, 2007
• DNA Memorty with 16.8M addresses
  Preliminary Proceedings of the 13th International Meeting on DNA Computing, 19, 29, 2007
• A study on evaluation method in hotel classification system
  大柳 幸彦; 川村 秀憲; 山本 雅人
  観光と情報, 3, 1, 29, 35, 観光情報学会, 2007
  Japanese
• Survey and comparison of European hotel classification systems
  KATALIN C
  観光と情報, 3, 1, 36, 44, 観光情報学会, 2007
  English
• Development of the research platform of small autonomous blimp robot
  Toshihiko Takaya; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  IEEJ Transactions on Electronics, Information and Systems, 127, 9, 18, 1429, Institute of Electrical Engineers of Japan, 2007
  English
• PID landing orbit motion controller for an indoor blimp robot
  Toshihiko Takaya; Hidenori Kawamura; Yoshihiro Minagawa; Masahito Yamamoto; Azuma Ohuchi
  Artificial Life and Robotics, 10, 2, 177, 184, Nov. 2006, [Peer-reviewed]
  English, Scientific journal
• Specificity of hybridization between DNA sequences based on free energy
  F Tanaka; A Kameda; M Yamamoto; A Ohuchi
  DNA COMPUTING, 3892, 371, 379, 2006, [Peer-reviewed]
  English, Scientific journal
• Automatic Classification of Websites based on Keyword Extraction of Nouns.
  Takatomo Honda; Masahito Yamamoto; Azuma Ohuchi
  Information and Communication Technologies in Tourism, ENTER 2006, Proceedings of the International Conference in Lausanne, Switzerland, 2006, 263, 272, Springer, 2006, [Peer-reviewed]
  International conference proceedings
• Analysis of Circular Tour Activity Based on GPS Log.
  Mitsuyoshi Nagao; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  Information and Communication Technologies in Tourism, ENTER 2006, Proceedings of the International Conference in Lausanne, Switzerland, 2006, 87, 98, Springer, 2006, [Peer-reviewed]
  International conference proceedings
• Development of DNA relational database and data manipulation experiments
  Masahito Yamamoto; Yutaka Kita; Satoshi Kashiwamura; Atsushi Kameda; Azuma Ohuchi
  DNA COMPUTING, 4287, 418, +, 2006, [Peer-reviewed]
  English, Scientific journal
• Sequence design for stable DNA tiles
  Naoki Iimura; Masahito Yamamoto; Fumiaki Tanaka; Atsushi Kameda; Azuma Ohuchi
  DNA COMPUTING, 4287, 172, +, 2006, [Peer-reviewed]
  English, Scientific journal
• Unravel four hairpins!
  Atsushi Kameda; Masahito Yamamoto; Azuma Ohuchi; Satsuki Yaegashi; Masami Hagiya
  DNA Computing, 4287, 381, 392, 2006, [Peer-reviewed]
  English, International conference proceedings
• Motion control in three dimensional round system of blimp robot
  Toshihiko Takaya; Hidenori Kawamura; Yoshihiro Minagawa; Masahito Yamamoto; Azuma Ouchi
  2006 SICE-ICASE International Joint Conference, 1291, 1294, 2006, [Peer-reviewed]
  English, International conference proceedings
• 観光インターネットディレクトリ構築に向けたWebサイトの自動分類
  本田 崇智; 山本 雅人; 大内 東
  観光と情報, 2, 1, 49, 57, 観光情報学会, 2006
  Japanese
• DNA polymerase programmed with a hairpin DNA incorporates a multiple-instruction architecture into molecular computing
  K Komiya; K Sakamoto; A Kameda; M Yamamoto; A Ohuchi; D Kiga; S Yokoyama; M Hagiya
  BIOSYSTEMS, 83, 1, 18, 25, Jan. 2006, [Peer-reviewed]
  English, Scientific journal
• Hairpin-based state machine and conformational addressing: Design and experiment
  Atsushi Kameda; Masahito Yamamoto; Hiroki Uejima; Masami Hagiya; Kensaku Sakamoto; Azuma Ohuchi
  Natural Computing, 4, 2, 103, 126, Jun. 2005, [Peer-reviewed]
  English, Scientific journal
• Development of an Entertainment Indoor Blimp Robot Based On Hovering Control
  KAWAMURA Hidenori; KADOTA Hisao; YAMAMOTO Masahito; TAKAYA Toshihiko; OHUCHI Azuma
  Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, 17, 2, 203, 211, 日本知能情報ファジィ学会, 15 Apr. 2005
  Japanese, Scientific journal, In this paper, we report the development of the entertainment blimp robot which can make several reactive behaviors for user's appeal. The blimp robot has a wireless CCD camera and wireless microphone at the bottom of body, and rotates or goes upward/downward by trigger of user's handclap. To make variety reactions of the blimp robot, a sequence of robot behavior is generated based on the nondeterministic finite state machine. In addition, the stable flying behavior is achieved by the proposed hovering control based on grounded red circle landmarks. Throughout an experiment, we confirm that the blimp robot can fly long-term with user-interaction.
• Potential for enlarging DNA memory: the validity of experimental operations of scaled-up nested primer molecular memory
  S Kashiwamura; M Yamamoto; A Kameda; T Shiba; A Ohuchi
  BIOSYSTEMS, 80, 1, 99, 112, Apr. 2005, [Peer-reviewed]
  English, Scientific journal
• Aqueous computing with DNA hairpin-based RAM
  N Takahashi; A Kameda; M Yamamoto; A Ohuchi
  DNA COMPUTING, 3384, 355, 364, 2005, [Peer-reviewed]
  English, Scientific journal
• GPS log mining method for tourism activity analysis
  M Nagao; H Kawamura; M Yamamoto; A Ohuchi
  Soft Computing as Transdisciplinary Science and Technology, 285, 294, 2005, [Peer-reviewed]
  English, International conference proceedings
• Hidenori Kawamura, Hisao Kadota, Masahito Yamamoto, Toshihiko Takaya and Azuma Ohuchi： Motion Design for Indoor Blimp Robot with PID Controller, Journal of Robotics and Mechatronics, Vol. 17, No. 5, pp. 500-508 (2005)*
  2005
• GPSログマイニングに基づく観光動態情報の獲得
  長尾 光悦; 川村 秀憲; 山本 雅人
  観光と情報, 1, 1, 38, 46, 観光情報学会, 2005
  Japanese
• Potential for enlarging DNA memory: The validity of experimental operations of scaled-up nested primer molecular memory
  Satoshi Kashiwamura; Masahito Yamamoto; Atsushi Kameda; Toshikazu Shiba; Azuma Ohuchi
  BioSystems, 80, 1, 99, 112, Elsevier Ireland Ltd, 2005
  English, Scientific journal
• Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshihiko Takaya, and Azuma Ohuchi: PID Orbit Motion Controller for Indoor Blimp Robot, Proceedings of The 10th International Symposium on Artificial Life and Robotics, CD-ROM (2005)*
  2005
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi： Specificity of Hybridization between DNA Sequences Based on Free Energy, Proceedings of The 11th International Meeting on DNA Computing, pp. 366-375 (2005)*
  2005
• Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda and Azuma Ohuchi： Experimental Challenge of Scaled-up Hierarchical DNA Memory, Proceedings of The 11th International Meeting on DNA Computing, pp. 396 (2005)*
  2005
• Masahito Yamamoto, Hidenori Kawamura and Azuma Ohuchi： A Location-based Search Engine for Official Web-sites, IFORS2005 (17th Triennial Conference of the International Federation of Operations Research Societies), pp. 46 (2005)*
  2005
• Development of an Entertainment Indoor Blimp Robot Based On Hovering Control
  KAWAMURA Hidenori; KADOTA Hisao; YAMAMOTO Masahito; TAKAYA Toshihiko; OHUCHI Azuma
  Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, Vol. 17, No. 2, 203, 211, Japan Society for Fuzzy Theory and Intelligent Informatics, 2005
  Japanese, In this paper, we report the development of the entertainment blimp robot which can make several reactive behaviors for user's appeal. The blimp robot has a wireless CCD camera and wireless microphone at the bottom of body, and rotates or goes upward/downward by trigger of user's handclap. To make variety reactions of the blimp robot, a sequence of robot behavior is generated based on the nondeterministic finite state machine. In addition, the stable flying behavior is achieved by the proposed hovering control based on grounded red circle landmarks. Throughout an experiment, we confirm that the blimp robot can fly long-term with user-interaction.
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Design of nucleic acid sequences for DNA computing based on a thermodynamic approach, Nucleic Acids Research, Vol. 33, No. 3, pp. 903-911 (2005)*
  2005
• Mitsuyoshi Nagao, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi： GPS Log Mining Method for Tourism Activity Analysis, Proceedings of the 4th IEEE International Workshop WSTST'05, pp. 285-294 (2005)*
  2005
• 顧客主導型予約調整メカニズムによる新電子予約システムの開発
  佐藤 博信; 村上 仁; 川村 秀憲
  観光情報学会誌, Vol. 1, No. 1, 64, 70, 観光情報学会, 2005
  Japanese
• Yutaka Kita, Atsushi Kameda, Masahito Yamamoto, and Azuma Ohuchi: Design of Soccer-ball-shape DNA Molecules and Preliminary Experiments in Vitro, Proceedings of The 10th International Symposium on Artificial Life and Robotics, CD-ROM (2005)*
  2005
• Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi： Multiagent Simulation of Customer-driven Reservation Adjustment Mechanism, Proceedings of the 9th Japan and Australia Joint Workshop on Intelligent and Evolutionary Systems 2005, CD-ROM (2005)*
  2005
• Mitsuyoshi Nagao, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi： Development of Tourism Activity Analysis System Based on GPS Log Data, IFORS2005 (17th Triennial Conference of the International Federation of Operations Research Societies), pp. ・・・
  2005
  Mitsuyoshi Nagao, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi：
  
  Development of Tourism Activity Analysis System Based on GPS Log Data,
  
  IFORS2005 (17th Triennial Conference of the International Federation of Operations Research Societies), pp. 46 (2005)*
• Koji Nishikawa, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi: Qualititative Analysis of Self-organizing Multiagent Interaction with Entropy and Mutual Information, Proceedings of The 10th International Symposium on Artificial Life and Robot・・・
  2005
  Koji Nishikawa, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi:
  
  Qualititative Analysis of Self-organizing Multiagent Interaction with Entropy and Mutual Information,
  
  Proceedings of The 10th International Symposium on Artificial Life and Robotics, CD-ROM (2005)*
• Design of nucleic acid sequences for DNA computing based on a thermodynamic approach
  F Tanaka; A Kameda; M Yamamoto; A Ohuchi
  NUCLEIC ACIDS RESEARCH, 33, 3, 903, 911, 2005, [Peer-reviewed]
  English, Scientific journal
• Motion Design for Indoor Blimp Robot with PID Controller.
  Hidenori Kawamura; Hisao Kadota; Masahito Yamamoto; Toshihiko Takaya; Azuma Ohuchi
  JRM, 17, 5, 500, 508, 2005, [Peer-reviewed]
  English, Scientific journal
• Development, evaluation and benchmarking of simulation software for biomolecule-based computing
  Derrel Blain; Max Garzon; Soo-Yong Shin; Byoung-Tak Zhang; Satoshi Kashiwamura; Masahito Yamamoto; Atsushi Kameda; Azuma Ohuchi
  Natural Computing, 3, 4, 427, 442, Dec. 2004, [Peer-reviewed]
  English, Scientific journal
• Development of Autonomous Balloon Robot System with Vision Camera and PD Position Controller
  角田久雄; 川村秀憲; 山本雅人; 高谷敏彦; 大内東
  情報処理学会論文誌, 45, 6, 1715, 1724, 15 Jun. 2004
  Japanese
• Development of Autonomous Balloon Robot System with Vision Camera and PD Position Controller(Application Systems)
  KADOTA HISAO; KAWAMURA HIDENORI; YAMAMOTO MASAHITO; TAKAYA TOSHIHIKO; OHUCHI AZUMA
  IPSJ Journal, 45, 6, 1715, 1724, 一般社団法人情報処理学会, 15 Jun. 2004
  Japanese, Balloon robots have attracted attention as new type indoor robots for various applications, e.g., observation, guidance, and amusement flying. A balloon robot can float and move long time in 3-dimensional space by low energy. However, it is difficult to control positioning of a balloon robot because it has great inertia and is easily effected by a little air stream of a conditioner. Positioning control under usual indoor environment is key technology to realize an autonomous balloon robot. In this paper, we develop the indoor-type balloon robot system with a light wireless vision camera. The balloon robot is controlled to keep at the target position based on simple vision processing and PD-controller. Vision processing is realized by perceiving a red circle on the floor as a landmark. In the experiments, several PD settings are investigated for positioning control, and we conclude the paper by that P-controller is suitable to keep at the target position and PD-controller successfully works to go in the direction of target from far position.
• Two-step search for DNA sequence design
  S Kashiwamura; A Kameda; M Yamamoto; A Ohuchi
  IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E87A, 6, 1446, 1453, Jun. 2004, [Peer-reviewed]
  English, Scientific journal
• Thermodynamic parameters based on a nearest-neighbor model for DNA sequences with a single-bulge loop
  F Tanaka; A Kameda; M Yamamoto; A Ohuchi
  BIOCHEMISTRY, 43, 22, 7143, 7150, Jun. 2004, [Peer-reviewed]
  English, Scientific journal
• DNAコンピューティングと最適化
  山本雅人; 大内東
  電気学会全国大会講演論文集, 2004, 4, 4.S19(13)-4.S19(16), 16, 17 Mar. 2004
  Japanese, Scientific journal
• Conformational addressing using the hairpin structure of single-strand DNA
  A Kameda; M Yamamoto; H Uejima; M Hagiya; K Sakamoto; A Ohuchi
  DNA COMPUTING, 2943, 219, 224, 2004, [Peer-reviewed]
  English, Scientific journal
• Nearest-neighbor thermodynamics of DNA sequences with single bulge loop
  F Tanaka; A Kameda; M Yamamoto; A Ohuchi
  DNA COMPUTING, 2943, 170, 179, 2004, [Peer-reviewed]
  English, Scientific journal
• Vision-based positioning system for indoor blimp robot
  Hisao Kadota; Hidenori Kawamura; Masahito Yamamoto; Toshihiko Takaya; Azuma Ohuch
  IFAC Proceedings Volumes (IFAC-PapersOnline), 37, 8, 478, 483, IFAC Secretariat, 2004
  English, International conference proceedings
• Vision-Based Motion Control of Indoor Blimp Robot(Featured Robot 1,Session: TP1-B)
  Kadota Hisao; Kawamura Hidenori; Yamamoto Masahito; Takaya Toshihiko; Ohuchi Azuma
  The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM, 2004, 47, 47, The Japan Society of Mechanical Engineers, 2004
  English
• An Automatically Generated Portal Site of Official Accommodation Websites.
  Masahito Yamamoto; Kohichiro Takagi; Masashi Nakatsugawa; Hidenori Kawamura; Azuma Ohuchi
  Information and Communication Technologies in Tourism(ENTER), 317, 325, Springer, 2004
  International conference proceedings
• Design of Action-value Function in Motion Planning for Autonomous Blimp Robots
  Keiko Motoyama; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  IEEJ Transactions on Electronics, Information and Systems, 124, 10, 1930, 1937, 2004, [Peer-reviewed]
  English, Scientific journal
• Masahito Yamamoto, Kohichiro Takagi, Masashi Nakatsugawa, Hidenori Kawamura and Azuma Ohuchi: An Automatically Generated Portal Site of Official Accommodation Web Sites, Infomation and Communitcation Technologies in Tourism 2004, Springer-Verlag (ISBN ・・・
  2004
  Masahito Yamamoto, Kohichiro Takagi, Masashi Nakatsugawa, Hidenori Kawamura and Azuma Ohuchi:
  
  An Automatically Generated Portal Site of Official Accommodation Web Sites,
  
  Infomation and Communitcation Technologies in Tourism 2004,
  
  Springer-Verlag (ISBN 3-211-20669-8), pp. 317-325 (2004)*
• Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshiaki Takaya and Azuma Ohuchi: Design of Vision-Based Motion Control System for Balloon Robot, Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th), pp. 325-3・・・
  2004
  Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshiaki Takaya and Azuma Ohuchi:
  
  Design of Vision-Based Motion Control System for Balloon Robot,
  
  Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th), pp. 325-328 (2004)*
• Masahito Yamamoto, Hidenori Kawamura, and Azuma Ohuchi: Efficient Collection Method of Official Websites by Robot Program, Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conference, CD-ROM (2004)*
  2004
• Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshihiko Takaya, and Azuma Ohuchi: Vision-Based Motion Control of Indoor Blimp Robot, Proceedings of The 4th International Conference on Advanced Mechatronics -Toward Evolutionary Fusion of I・・・
  2004
  Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshihiko Takaya, and Azuma Ohuchi:
  
  Vision-Based Motion Control of Indoor Blimp Robot,
  
  Proceedings of The 4th International Conference on Advanced Mechatronics -Toward Evolutionary
  
  Fusion of IT and Mechatronics- (ICAM'04), CD-ROM (2004)*
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Thermodynamic Parameters Based on a Nearest-Neighbor Model for DNA Sequences with a Single-Bulge Loop,Biochemistry, Vol. 43, No. 22, pp. 7143-7150 (2004)*
  2004
• Naoto Takahashi, Atsushi Kameda, Masahito Yamamoto, and Azuma Ohuchi: Aqueous Computing with DNA Hairpin-based RAM, Preliminary Proceedings of the Tenth International Meeting on DNA Based Computers (DNA10), pp. 50-59 (2004)*
  2004
• Naoto Takahashi, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Construction and Verfication of DNA Hairpin-based RAM, Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th), pp. 388-328 (2004)*
  2004
• Hajime Saito, Masashi Nakatsugawa, Masahito Yamamoto, Hidenori Kawamura, Saburo Nakano, Nobuo Hashimoto, and Azuma Ohuchi: A Study on Digital Archive For Field (Outdoor) Sculpture on Constructing Hokkaido Sculpture Web, Proceedings of the Fifth ・・・
  2004
  Hajime Saito, Masashi Nakatsugawa, Masahito Yamamoto, Hidenori Kawamura, Saburo Nakano,
  
  Nobuo Hashimoto, and Azuma Ohuchi:
  
  A Study on Digital Archive For Field (Outdoor) Sculpture on Constructing Hokkaido Sculpture Web,
  
  Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conference, CD-ROM (2004)*
• Atsushi Kameda, Keisuke Hashimoto, Masahito Yamamoto, and Azuma Ohuchi: Probabilistic State Transition Model based on PCR, Preliminary Proceedings of the Tenth International Meeting on DNA Based Computers (DNA10), p. 448 (2004)*
  2004
• Kadota H., Kawamura H., Yamamoto M., Takaya T. and Ohuchi A.: "Design of Vision-Based Motion Control System for Balloon Robot", Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th '04), 1:325-328(2004)*
  2004
• Tanaka F., Kameda A., Yamamoto M. and Ohuchi A.: "Nearest-Neighbor Thermodynamics of DNA Sequences with Single Bulge Loop", Lecture Notes in Computer Science, 2943:170-179(2004)*
  2004
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Nearest-Neighbor Thermodynamics of DNA Sequences with Single Bulge Loop, Lecture Notes in Computer Science (ISBN 3-540-20930-1), Vol.2943, pp. 170-179 (2004)*
  2004
• Keiko Motoyama, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi: Design of Action-value Function in Motion Planning for Autonomous Blimp Robot, IEEJ Transactions on Electronics, Information and Systems, Vol. 10, No. 124, pp. 1930-1937 (2004)*
  2004
• Satoshi Kashiwamura Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: General Protocol for Evaluating the Gegree of Occurence of Mis-Hybridization, Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th), pp. 303-・・・
  2004
  Satoshi Kashiwamura Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi:
  
  General Protocol for Evaluating the Gegree of Occurence of Mis-Hybridization,
  
  Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th), pp. 303-308 (2004)*
• Hidenori Kawamura, Masahito Yamamoto, and Azuma Ohuchi: Mutliagent Analysis of Customer-Driven Reservation System, Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conference, CD-ROM (2004)*
  2004
• Satoshi Kashiwamura, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Two-Step Search for DNA Sequence Design, IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol. E87-A, No. 6, pp. 1446-1453 (2004)*
  2004
• Derrel Blain, Max Garzon, Soo-Yong Shin, Byoung-Tak Zhang, Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda and Azuma Ohuchi: Development, Evaluation and Benchmarking of Simulation Software for Biomolecule-based Computing, Natural Computin・・・
  2004
  Derrel Blain, Max Garzon, Soo-Yong Shin, Byoung-Tak Zhang, Satoshi Kashiwamura,
  
  Masahito Yamamoto, Atsushi Kameda and Azuma Ohuchi:
  
  Development, Evaluation and Benchmarking of Simulation Software for Biomolecule-based Computing,
  
  Natural Computing, Vol.3, No.4, pp. 427-442 (2004)*
• Hisao Kadota, Hidenori Kawamura, Masahito Yamamoto, Toshihiko Takaya, and Azuma Ohuchi: Vision-based Positioning System for Indoor Blimp Robot, Proceedings of 5th IFAC/EURON Symposium on Intelligent Autonomous Vehicles (IAV2004), CD-ROM (2004)*
  2004
• Mitsuyoshi Nagao, Hidenori Kawamura, Masahito Yamamoto, and Azuma Ohuchi: Acquisition of Personal Tourism Activity Information Based on GPS Log Mining Method, Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conf・・・
  2004
  Mitsuyoshi Nagao, Hidenori Kawamura, Masahito Yamamoto, and Azuma Ohuchi:
  
  Acquisition of Personal Tourism Activity Information Based on GPS Log Mining Method,
  
  Proceedings of the Fifth Asia-Pacific Industrial Engineering and Management Systems Conference, CD-ROM (2004)*
• Atsushi Kameda, Masahito Yamamoto, Hiroki Uejima, Masami Hagiya, Kensaku Sakamoto and Azuma Ohuchi: Conformational Addressing Using the Hairpin Structure of Single-Strand DNA, Lecture Note of Computer Science 2943, DNA9, pp. 219-224 (2004)*
  2004
• Takahashi N., Kameda A., Yamamoto M. and Ohuchi A.: "Construction and Verification of DNA Hairpin-based RAM", Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th '04), 2:388-391(2004)*
  2004
• Kashiwamura S., Kameda A., Yamamoto M. and Ohuchi A.: "General Protocol for Evaluating the Degree of Occurrence of Mis-Hybridization", Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th '04), 1:303-308(2004)*
  2004
• Hierarchical DNA memory based on nested PCR
  S Kashiwamura; M Yamamoto; A Kameda; T Shiba; A Ohuchi
  DNA COMPUTING, 2568, 112, 123, 2003, [Peer-reviewed]
  English, Scientific journal
• The effect of the bulge loop upon the hybridization process in DNA computing
  F Tanaka; A Kameda; M Yamamoto; A Ohuchi
  EVOLVABLE SYSTEMS: FROM BIOLOGY TO HARDWARE, PROCEEDINGS, 2606, 446, 456, 2003, [Peer-reviewed]
  English, Scientific journal
• Kashiwamura S., Kameda A., Yamamoto M. and Ohuchi A.: "Evaluation and Benchmarking", Proceedings of Workshop on Simulation Tools for Biomolecular Computing in 2003 Congress on Evolutionary Computation (CEC2003), 22-26(2003)*
  2003
• Takagi K., Yamamoto M., Nakatsugawa M., Kawamura H. and Ohuchi A.: "An Automatic Collection System for Official Accommodation Websites", Proceedings of 7th International Meeting On DNA Based Computers, 人工知能学会研究会資料 (SIG-KBS-A301), 99-104(2003)*
  2003
• Takahashi N., Kameda A., Yamamoto M. and Ohuchi A.: "Construction of DNA Hairpin-based RAM", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
  2003
• Kashiwamura S., Kameda A., Yamamoto M. and Ohuchi A.: "Two-Step Search for DNA Sequence Design", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
  2003
• Atsushi Kameda, Masahito Yamamoto, Hiroki Uejima, Masami Hagiya, Kensaku Sakamoto and Azuma Ohuchi: Conformational Addressing using the Hairpin Structure of Single-strand DNA, Proceedings of 9th International Meetings on DNA Based Computers (DNA9), pp.・・・
  2003
  Atsushi Kameda, Masahito Yamamoto, Hiroki Uejima, Masami Hagiya, Kensaku Sakamoto and Azuma Ohuchi: Conformational Addressing using the Hairpin Structure of Single-strand DNA, Proceedings of 9th International Meetings on DNA Based Computers (DNA9), pp. 197-201 (2003)*
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: The Effect of the Bulge Loop upon the Hybridization Process in DNA Computing, Evolvable Systems: From Biology to Hardware, 5th International Conference (ICES 2003), LNCS 2606, pp. 446-・・・
  2003
  Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: The Effect of the Bulge Loop upon the Hybridization Process in DNA Computing, Evolvable Systems: From Biology to Hardware, 5th International Conference (ICES 2003), LNCS 2606, pp. 446-456 (2003)*
• Keiko Motoyama, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi: Development of Autonomous Blimp Robot with Intelligent Control, Entertainment Computing - Technologies and Applications, pp. 191-198 (2003)*
  2003
• Kadota H., Kawamura H., Yamamoto M., Takaya T. and Ohuchi A.: "Vision-based Control of Autonomous Flying Airship Robot", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), [(CD-・・・
  2003
  Kadota H., Kawamura H., Yamamoto M., Takaya T. and Ohuchi A.:
  
  "Vision-based Control of Autonomous Flying Airship Robot",
  
  Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
• Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda, Toshikazu Shiba and Azuma Ohuchi: Hierarchical DNA Memory Based on Nested PCR, DNA Computing, 8th International Workshop on DNA-based Computers, LNCS 2568, Springer-Verlag, pp. 112-123 (2003) *
  2003
• Motoyama K., Kawamura H., Yamamoto M. and Ohuchi A.: "Design of Action-value Function in Motion Planning for Autonomous Balloon Robot", Proceedings of 2003 Asia Pacific Symposium on Intelligent and Evolutionary Systems: Technology and Applications, 190・・・
  2003
  Motoyama K., Kawamura H., Yamamoto M. and Ohuchi A.:
  
  "Design of Action-value Function in Motion Planning for Autonomous Balloon Robot",
  
  Proceedings of 2003 Asia Pacific Symposium on Intelligent and Evolutionary Systems: Technology and Applications, 190-195(2003)*
• Tanaka F., Kameda A., Yamamoto M. and Ohuchi A.: "The Effect on a Bonding Strength by the Freedom of Movement of a DNA Strand on a Solid Support in DNA Computing", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computer・・・
  2003
  Tanaka F., Kameda A., Yamamoto M. and Ohuchi A.:
  
  "The Effect on a Bonding Strength by the Freedom of Movement of a DNA Strand on a Solid Support in DNA Computing",
  
  Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
• Hashimoto K., Kameda A., Yamamoto M. and Ohuchi A.: "State Transition Model Based on DNA Polymerization", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
  2003
• Fumiaki Tanaka, Atsushi Kameda, Masahito Yamamoto and Azuma Ohuchi: Nearest-Neighbor Thermodynamics of DNA Sequences with Single Bulge Loop, Proceedings of 9th International Meetings on DNA Based Computers (DNA9), pp. 150-159 (2003)*
  2003
• Nakatsugawa M., Yamamoto M. and Ohuchi A.: "Study of the Efficient Parameter Setting based on Mahalanobis-Taguchi Strategy", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), [・・・
  2003
  Nakatsugawa M., Yamamoto M. and Ohuchi A.:
  
  "Study of the Efficient Parameter Setting based on Mahalanobis-Taguchi Strategy",
  
  Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
• Onodera M., Kawamura H., Yamamoto M., Kurumatani K. and Ohuchi A.: "Design of Adaptive Trading Strategy for Trading Agent Competition", Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CS・・・
  2003
  Onodera M., Kawamura H., Yamamoto M., Kurumatani K. and Ohuchi A.:
  
  "Design of Adaptive Trading Strategy for Trading Agent Competition",
  
  Proceedings of the 2003 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2003), (2003)*
• Ayako Nishimura, Hidenori Kawamura, Masahito Yamamoto and Azuma Ohuchi: Learning control of autonomous airship for three-dimensional pursuit problem, Proceedings of Artificial Life And Robotics 8th (AROB 8th '03), pp. 194-197 (2003)*
  2003
• Yamamoto M., Takagi T., Nakatsugawa M., Kawamura H. and Ohuchi A.: "An Automatically Generated Portal Site of Official Accommodation Web Sites", Information and Communitcation Technologies in Tourism 2004, Springer-Verlag, 317-325(2004)*
  2003
• Kameda A., Yamamoto M., Uejima H., Hagiya M., Sakamoto K. and Ohuchi A.: "Conformational Addressing Using the Hairpin Structure of Single-Strand DNA", Lecture Notes in Computer Science, 2943:219-224(2004)*
  2003
• DNA Computing Paradign : Principle and Applications
  YAMAMOTO Masahito; SHIBA Toshikazu; OHUCHI Azuma
  Systems, control and information, 46, 5, 260, 268, システム制御情報学会, 15 May 2002
  Japanese, Scientific journal
• DNA Computing. 2. DNA Computing with Concentration Control.
  山本 雅人; 大内 東
  The Journal of the Institute of Electrical Engineers of Japan, 122, 3, 152, 155, 社団法人 電気学会, 01 Mar. 2002
  Japanese
• Indexing of Utilizing Information Technology in Prefectural Medical Associations
  OHUCHI Azuma; KURIHARA Masahito; MITAMURA Tamotsu; YAMAMOTO Masahito; MIYAKOSHI Akio; NAKAGAWA Toshio; NAGASAWA Kunio
  医療情報学 = Japan journal of medical informatics, 21, 6, 397, 405, Japan Association for Medical Informatics, 01 Feb. 2002
  Japanese,

   In this paper, we propose a method to index for present condition of utilizing information technology of prefectural medical associations. Additionally, we report, as a case study, the results of the application of the proposed method to survey and analysis of Hokkaido Medical Associations and indexing them.

   The method involves surveying the present situation of each medical association in terms of the three points of view, i.e., infrastractures (I), skill (S) and mind (M). We propose four indices to verify the present situation of medical associations, i.e., ISM index, ISM±index, l-u index and l-u ratio index.

   The proposed method was applied to carry out survey of Hokkaido Medical Associations. The result reveals wide applicabilty of the method.

• An analysis of computational efficiency of DNA computing
  A Kameda; N Matsuura; M Yamamoto; A Ohuchi
  UNCONVENTIONAL MODELS IN COMPUTATION, PROCEEDINGS, 2509, 191, 198, 2002, [Peer-reviewed]
  English, Scientific journal
• Development of autonomous blimp robot with intelligent control.
  Keiko Motoyama; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  Entertainment Computing: Technologies and Applications, IFIP First International Workshop on Entertainment Computing (IWEC 2002), May 14-17, 2002, Makuhari, Japan, 191, 198, Kluwer, 2002, [Peer-reviewed]
  International conference proceedings
• A security system for personal genome information at DNA level
  Y Kawazoe; T Shiba; M Yamamoto; A Ohuchi
  CSB2002: IEEE COMPUTER SOCIETY BIOINFORMATICS CONFERENCE, 1, 314, 320, 2002, [Peer-reviewed]
  English, Scientific journal
• A separation method for DNA computing based on concentration control
  M Yamamoto; A Kameda; N Matsuura; T Shiba; Y Kawazoe; A Ohuchi
  NEW GENERATION COMPUTING, 20, 3, 251, 261, 2002, [Peer-reviewed]
  English, Scientific journal
• Improved Multiple Ant Colonies System for Traveling Salesman Problems
  Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  "Operations Research/Management Science at Work" in the International Series in Operations Research & Management Science, 43, 41, 52, 2002, [Peer-reviewed]
• Design of a PCR protocol for improving reliability of PCR in DNA computing
  Masashi Nakatsugawa; Masahito Yamamoto; Toshikazu Shiba; Azuma Ohuchi
  Proceedings of the 2002 Congress on Evolutionary Computation, CEC 2002, 1, 91, 96, IEEE Computer Society, 2002, [Peer-reviewed]
  English, Scientific journal
• Towards a general-purpose sequence design system in DNA computing
  F Tanaka; M Nakatsugawa; M Yamamoto; T Shiba; A Ohuchi
  CEC'02: PROCEEDINGS OF THE 2002 CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1 AND 2, 73, 78, 2002, [Peer-reviewed]
  English, Scientific journal
• A study on behavioral structure of artificial market based on adaptive game
  T Hamada; H Kawamura; M Yamamoto; A Ohuchi
  CEC'02: PROCEEDINGS OF THE 2002 CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1 AND 2, 2011, 2016, 2002, [Peer-reviewed]
  English, International conference proceedings
• Simulation analysis of hybridization process for DNA computing with concentration control
  M Yamamoto; A Kameda; N Matsuura; T Shiba; A Ohuchi
  CEC'02: PROCEEDINGS OF THE 2002 CONGRESS ON EVOLUTIONARY COMPUTATION, VOLS 1 AND 2, 85, 90, 2002, [Peer-reviewed]
  English, Scientific journal
• Nakatsugawa, M., Kashiwamura, S., Yamamoto, M., Shiba, T. and Ohuchi, A.: "Towards a High Reliability of the PCR Amplification Process in DNA Computing", The International Journal of Computational Intelligence and Applications (IJCIA), 2(4):423-432 (20・・・
  2002
  Nakatsugawa, M., Kashiwamura, S., Yamamoto, M., Shiba, T. and Ohuchi, A.: "Towards a High Reliability of the PCR Amplification Process in DNA Computing", The International Journal of Computational Intelligence and Applications (IJCIA), 2(4):423-432 (2002)*
• Tanaka, F., Nakatsugawa, M., Yamamoto, M., Shiba, T. and Ohuchi, A.: "Towards a General-Purpose Sequence Design System in DNA Computing", Proceedings of 2002 Congress on Evolutionary Computation (CEC2002), 73-78 (2002)*
  2002
• Nakatsugawa, M., Yamamoto, M., Shiba, T. and Ohuchi, A.: "Design of a PCR Protocol for Improving Reliability of PCR in DNA Computing", Proceedings of 2002 Congress on Evolutionary Computation (CEC2002), 91-96 (2002)*
  2002
• Nakatsugawa, M., Yamamoto, M., Shiba, T. and Ohuchi, A.: "Improvement of the Reliability of Experiments in DNA Computing", Preliminary Proceedings of Eighth International Meeting on DNA Based Computers (DNA8), 333 (2002)*
  2002
• Yamamoto, M., Kameda, A., Matsuura, N., Shiba, T., Kawazoe, Y. and Ohuchi, A.: "Local Search by Concentration Controlled DNA Computing", The International Journal of Computational Intelligence and Applications (IJCIA), 2(4):447-456 (2002)*
  2002
• Yamamoto, M., Kameda, A., Matsuura, N., Shiba, T., Kawazoe, Y. and Ohuchi, A.: "A Separation Method for DNA Computing Based on Concentration Control", New Generation Computing, 20:249-259 (2002)*
  2002
• Hamada, T., Kawamura, H. Yamamoto, M. and Ohuchi, A.: "A Study on Behavioral Structure of Artificial Market Based on Adaptive Game", Proceedings of 2002 Congress on Evolutionary Computation (CEC2002), 2011-2016 (2002)*
  2002
• Jan, A.，Yamamoto, M. and Ohuchi, A.: "Search Algorithms For Nurse Scheduling With Genetic Algorithms，Operations Research/Management Science at Work", the International Series in Operations Research & Management Science, 43, Kluwer Academic Publishers (・・・
  2002
  Jan, A.，Yamamoto, M. and Ohuchi, A.: "Search Algorithms For Nurse Scheduling With Genetic Algorithms，Operations Research/Management Science at Work", the International Series in Operations Research & Management Science, 43, Kluwer Academic Publishers (ISBN 0-7923-7588-2), 149-161 (2002)*
• Kameda, A., Matsuura, N., Yamamoto, M. and Ohuchi, A.: "An Analysis of Computational Efficiency on DNA Computing", Proceedings of 3rd International Conference on Unconventional Models of Computation (UMC' 02), 191-198 (2002)*
  2002
• Kawazoe, Y., Shiba, T., Yamamoto, M. and Ohuchi, A.: "Constructions of Security System for Information Encoded by DNA", Preliminary Proceedings of Eighth International Meeting on DNA Based Computers (DNA8), 337 (2002)*
  2002
• Yamamoto, M., Kameda, A., Matsuura, N., Shiba, T. and Ohuchi, A.: "Simulation Analysis of Hybridization Process for DNA Computing with Concentration Control", Proceedings of 2002 Congress on Evolutionary Computation (CEC2002), 85-90 (2002)*
  2002
• Matsuura, M., Yamamoto, M., Kameda, A., Shiba, T. and Ohuchi, A.: "The Efficiency of Computation by using DNA Concentration", Proceedings of The Seventh International Symposium on Artificial Life and Robotics, 2:681-684 (2002)*
  2002
• Motoyama, K., Suzuki, K., Kawamura, H., Yamamoto, M. and Ohuchi, A.: "Design of Adaptive Self Navigated Airship in Simulated Environment", Operations Research/Management Science at Work, the International Series in Operations Research & Management Scie・・・
  2002
  Motoyama, K., Suzuki, K., Kawamura, H., Yamamoto, M. and Ohuchi, A.: "Design of Adaptive Self Navigated Airship in Simulated Environment", Operations Research/Management Science at Work, the International Series in Operations Research & Management Science, 43, Kluwer Academic Publishers (ISBN 0-7923-7588-2), 205-213 (2002)*
• Kawazoe, Y., Shiba, T., Yamamoto, M. and Ohuchi, A.: "A Security System for Personal Genome Information at DNA level", Proceedings of IEEE Computer Society Bioinformatics Conference, 314-320 (2002)*
  2002
• Kashiwamura, S., Yamamoto, M., Kameda, A., Shiba, T. and Ohuchi, A.: "Hierarchical DNA Memory based on Nested PCR", Preliminary Proceedings of Eighth International Meeting on DNA Based Computers (DNA8), 231-240 (2002)*
  2002
• Kawamura, H., Yamamoto, M. and Ohuchi, A.: "Improved Multiple Ant Colonies System for Traveling Salesman Problems", Operations Research/Management Science at Work, the International Series in Operations Research & Management Science, 43, Kluwer Academi・・・
  2002
  Kawamura, H., Yamamoto, M. and Ohuchi, A.: "Improved Multiple Ant Colonies System for Traveling Salesman Problems", Operations Research/Management Science at Work, the International Series in Operations Research & Management Science, 43, Kluwer Academic Publishers (ISBN 0-7923-7588-2), 41-52 (2002)*
• A genetic algorithm for the optimal sequential partitioning problem
  Hajime Araki; Taichi Kaji; Masahito Yamamoto; Keiji Suzuki; Azuma Ohuchi
  Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi), 135, 4, 43, 51, Jun. 2001, [Peer-reviewed]
  English, Scientific journal
• Investigation of Evolutionary Pheromone Communication Based on External Measurement and Emergence of Swarm Intelligence
  KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma
  計測自動制御学会論文集, 37, 5, 455, 464, 計測自動制御学会, 31 May 2001
  Japanese, Scientific journal, In this paper, we focus on the emergence phenomenon related with artificial pheromone communication and swarm intelligence among many agents in Ants War environment, in which two colonies of artificial ant agents compete for the limited number of food items in order to survive in evolutionary process. The purpose of this research is to clarify the emerging process of communication and the relationship between communication and swarm intelligence. For investigation of communication, we introduce Shannon's entropy and the amount of information to externally measure “the effectivity of communication signals for decision-making of agents” and “the specialty of environmental situation in sending communication signals”. In computer simulations, we confirm that the amounts of information of pheromone sensory inputs and selecting of sending pheromone signal are increased with correlation according to the progress of evolution. These experimental results derive that evolutionary communication is incrementally formed by the interaction among agents with self-organization and the self-reinforcement in communication-loop of repeated sending and receiving signals. In addition, we confirm the level of swarm intelligence with evolved pheromone communications by measurement of the correlation between the size of swarm and the performance in Ants War. In investigation, we find that the size of swarm and emergence of swarm intelligence are strongly related. The results introduced in this research will be a base for investigation of multi-agent communications.
• Developing Support System for Sequence Design in DNA Computing.
  Fumiaki Tanaka; Masashi Nakatsugawa; Masahito Yamamoto; Toshikazu Shiba; Azuma Ohuchi
  DNA Computing, 7th International Workshop on DNA-Based Computers, DNA7, Tampa, Florida, USA, June 10-13, 2001, Revised Papers, 129, 137, Springer, 2001, [Peer-reviewed]
  International conference proceedings
• Towards Optimization of PCR Protocol in DNA Computing.
  Satoshi Kashiwamura; Masashi Nakatsugawa; Masahito Yamamoto; Toshikazu Shiba; Azuma Ohuchi
  DNA Computing, 7th International Workshop on DNA-Based Computers, DNA7, Tampa, Florida, USA, June 10-13, 2001, Revised Papers, 14, 22, Springer, 2001, [Peer-reviewed]
  International conference proceedings
• Local search by concentration controlled DNA computing
  M Yamamoto; N Matsuura; T Shiba; Y Kawazoe; A Ohuchi
  ICCIMA 2001: FOURTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, PROCEEDINGS, 2, 4, 167, 171, 2001, [Peer-reviewed]
  English, Scientific journal
• Towards a high reliability of the PCR amplification process in DNA computing
  M Nakatsugawa; S Kashiwamura; M Yamamoto; T Shiba; A Ohuchi
  ICCIMA 2001: FOURTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, PROCEEDINGS, 2, 4, 158, 162, 2001, [Peer-reviewed]
  English, Scientific journal
• Solutions of Shortest Path Problems by Concentration Control.
  Masahito Yamamoto; Nobuo Matsuura; Toshikazu Shiba; Yumi Kawazoe; Azuma Ohuchi
  DNA Computing, 7th International Workshop on DNA-Based Computers, DNA7, Tampa, Florida, USA, June 10-13, 2001, Revised Papers, 203, 212, Springer, 2001, [Peer-reviewed]
  International conference proceedings
• Analysis of Norms Game with Mutual Choice.
  Tomohisa Yamashita; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  New Frontiers in Artificial Intelligence, Joint JSAI 2001 Workshop Post-Proceedings, 174, 184, Springer, 2001, [Peer-reviewed]
  International conference proceedings
• An Acquisition of Evaluation Function for Shogi by Learning Self-Play
  Masahito Yamamoto; Keiji Suzuki; Azuma Ohuchi
  International Transactions in Operational Research, 8, 3, 305, 315, 2001, [Peer-reviewed]
  English, Scientific journal
• A face identification system based on the Mahalanobis–Taguchi system
  Mitsuyoshi Nagao; Masahito Yamamoto; Keiji Suzuki; Azuma Ohuchi
  International Transactions in Operational Research, 8, 1, 31, 45, 2001, [Peer-reviewed]
  English, Scientific journal
• Effects of propotion of metanorm players on establishment of norm
  T Yamashita; H Kawamura; M Yamamoto; A Ohuchi
  ICCIMA 2001: FOURTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, PROCEEDINGS, 195, 199, 2001, [Peer-reviewed]
  English, International conference proceedings
• Yamamoto M., Suzuki K. and Ohuchi A.: "An Acquisition of Evaluation Function for Shogi by Learning Self-play", International Transactions in Operational Research, 8, 3, 305-315 (2001)*
  2001
• Nakatsugawa M., Kashiwamura S., Yamamoto M., Shiba T. and Ohuchi A.: "Towards a High Reliability of the PCR Amplification Process in DNA Computing", Proceedings of Fourth International Conference on Computational Intelligence and Multimedia Applicati・・・
  2001
  Nakatsugawa M., Kashiwamura S., Yamamoto M., Shiba T. and Ohuchi A.:
  
  "Towards a High Reliability of the PCR Amplification Process in DNA Computing",
  
  Proceedings of Fourth International Conference on Computational Intelligence and Multimedia Applications (ICCIMA'01), 158-162 (2001)*
• Tanaka F., Nakatsugawa M., Yamamoto M., Shiba T. and Ohuchi A.: "Developing Support System for Sequence Design in DNA Computing", Proceedings of 7th International Meeting On DNA Based Computers, 340-349 (2001)*
  2001
• Matsuura N., Yamamoto M., Shiba T., Kawazoe Y. and Ohuchi A.: "Solutions of Shortest Path Problems by Concentration Control", Proceedings of 7th International Meeting On DNA Based Computers, 231-240 (2001)*
  2001
• Kashiwamura S., Nakatsugawa M., Yamamoto M., Shiba T. and Ohuchi A.: "Towards Optimization of PCR Protocol in DNA Computing", Proceedings of 7th International Meeting On DNA Based Computers, 283-292 (2001)*
  2001
• Yamamoto M., Matsuura N., Shiba T., Kawazoe Y. and Ohuchi A.: "Local Search by Concentration Controlled DNA Computing", Proceedings of Fourth International Conference on Computational Intelligence and Multimedia Applications (ICCIMA'01), 167-171 (2001)*
  2001
• Yamashita T., Kawamura H., Yamamoto M. and Ohuchi A.: "Effects of Proportion of Metanorm Players on Establishment of Norm", Proceedings of Fourth International Conference on Computational Intelligence and Multimedia Applications (ICCIMA'01), 195－199 ・・・
  2001
  Yamashita T., Kawamura H., Yamamoto M. and Ohuchi A.:
  
  "Effects of Proportion of Metanorm Players on Establishment of Norm",
  
  Proceedings of Fourth International Conference on Computational Intelligence and Multimedia Applications (ICCIMA'01), 195－199 (2001)*
• Yamashita T., Kawamura H., Yamamoto M. and Ohuchi A.: "Analysis of Norms Game with Mutual Choice", Proceedings of JSAI 2001 Internal Workshop on Agent-based Approaches in Economic and Social Complex Systems (AESCS 2001), 123-130 (2001)*
  2001
• Analysis of Mahalanobis distance in MTS. The calculation process and equation.
  中津川雅史; 山本雅人; 大内東
  品質工学, 8, 5, 547, 554, 01 Oct. 2000
  Japanese
• Application of the MTS Method for Facial Expression Recognition
  NAGAO Mitsuyoshi; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma
  The Transactions of the Institute of Electrical Engineers of Japan. C, 120, 8, 1157, 1164, 電気学会, 01 Aug. 2000
  Japanese, Scientific journal, It is clear that facial expressions are important on face-to-face communication. Humans can not only guess other person's psychological state from facial expressions but can also give own intentions to other persons by using them. If users can use facial expressions to a computer and the computer can correctly recognize them, an effective human interface can be constructed. Therefore, it is necessary to establish an effective facial expression recognition technique from facial image data. In this paper, we propose an application of the MTS (Mahalanobis-Taguchi-System) method for facial expression recognition. Especially, we treat the facial expression recognition from stationary facial image data. The MTS method is a statistical pattern recognition method using the Mahalanobis distance. This method can consider the correlation among each attribute in the recognition, and can optimize the number of attributes based on the results of recognition. We also propose an optimization method with the genetic algorithms. We construct the recognition system based on the MTS method, and then evaluate the effectiveness of the proposed methods through practical experiments. The experimental results revealed that our proposed methods could correctly recognize the facial expressions and could effectively optimize the number of attributes.
• Multiple ant colonies algorithm based on colony level interactions
  H Kawamura; M Yamamoto; K Suzuki; A Ohuchi
  IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E83A, 2, 371, 379, Feb. 2000, [Peer-reviewed]
  English, Scientific journal
• A genetic algorithm for the oprimal sequential partitioning problem
  ARAKI Hajime; KAJI Taichi; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma
  The Transactions of the Institute of Electrical Engineers of Japan. C, 120, 2, 215, 221, 電気学会, 01 Feb. 2000
  Japanese, Scientific journal, The optimal sequential partitioning problem is defined as the problem to find the minimum cost partition of the nodes of a directed acyclic graph into subsets of a given size, subject to the constraint that the prece-dence relationships among the elements are satisfied. The heuristic algorithm based on a tabu search for this problem has been proposed⁽²⁾. However, there is a tendency for the solutions obtained using the tabu search approach to be trapped in bad local optima in the parallel graphs with random costs of edges
  In this paper we present the genetic algorithm for the optimal sequential partitioning problem. We developeffective two point partial order crossover satisfying sequential conditions, which preserve better block that has the larger sum of edge costs of block. In this crossover we introduce roulette selection method to escape local optima. We also assess the effectiveness of the developed algorithm. The results show that this proposed algorithm outperforms, in terms of solution quality, any other algorithm using tabu search.
• Harmony Team.
  Hiroyuki Iizuka; Masatoshi Hiramoto; Hidenori Kawamura; Masahito Yamamoto; Azuma Ohuchi
  RoboCup 2000: Robot Soccer World Cup IV, 449, 452, Springer, 2000, [Peer-reviewed]
  International conference proceedings
• Evolutionary algorithms for nurse scheduling problem.
  Ahmad Jan; Masahito Yamamoto; Azuma Ohuchi
  Proceedings of the 2000 Congress on Evolutionary Computation(CEC), 196, 203, IEEE, 2000
  International conference proceedings
• A Security System for Human Genome Information Encoded by Chemicals, Not by Electronic Codes
  Kawazoe Yumi; Shiba Toshikazu; Yamamoto Masahito; Ohuchi Azuma
  GI, 11, 464, 465, Japanese Society for Bioinformatics, 2000
  English
• DNA Solution of the Shortest Path Problem by Concentration Control
  Yamamoto Masahito; Matsuura Nobuo; Shiba Toshikazu; Ohuchi Azuma
  GI, 11, 466, 467, Japanese Society for Bioinformatics, 2000
  English
• A study on evolutionary emergence of pheromone communication on ants war
  H Kawamura; M Yamamoto; K Suzuki; A Ohuchi
  INTELLIGENT AUTONOMOUS SYSTEMS 6, 527, 534, 2000, [Peer-reviewed]
  English, International conference proceedings
• Tsutida, Y., Yamamoto, M., Kawamura, H. and Ohuchi, A.: "Cooperative Task Processing by Separating and Fusing Multi-Mobile-agents", Proceedings of International Technical Conference on Circuits/Systems,Computers and Communications, 965-968 (2000)*
  2000
• Ahmad, J., Yamamoto, M. and Ohuchi, A.: "Evolutionary Algorithms for Nurse Scheduling Problem", Congress on Evolutionary Computation 2000, 1:196-203 (2000)*
  2000
• Iizuka, H., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Emergence of Negotiating Words between Adaptive Agents", Supplement book of Simulated Adaptive Systems 2000 Proceedings, 285-294 (2000)*
  2000
• Yamamoto, M., Matsuura, N., Shiba, T. and Ohuchi, A.: "DNA Solution of the Shortest Path Problem by Concentration Control", Genome Informatics 2000, Tokyo (Japan), pp. 466-467 (2000)*
  2000
• Kawamura, H., Yamamoto M., Suzuki, K. and Ohuchi, A.: "A Study on Evolutionary Emergence of Pheromone Communication on Ants War", Intelligent Autonomous Systems 6 (IAS-6), E. Pagello et al. (Eds.), IOS Press, 527-534 (2000)*
  2000
• Iizuka, H., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Analysis of Collective Behavior in Selecting Game", Proceedings of The Fourth Japan-Australia Joint Workshop on Intelligent and Evolutionary Systems, 164-170 (2000)*
  2000
• Motoyama, K., Suzuki, K., Yamamoto, M. and Ohuchi, A: "Effects of Evolutionary Configuration of Reinforcement Learning Applied to Airship Control", Intelligent Autonomous Systems 6 (IAS-6), E. Pagello et al. (Eds.), IOS Press, 567-572 (2000)*
  2000
• Iizuka, H., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Learning of Virtual Words Utilized in Negotiation Process between Agents", IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E83-A(6):1075-1082 (2000)*
  2000
• Iizuka, H., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Formation of Interdependence in Selecting Game", Proceedings of International Technical Conference on Circuits/Systems,Computers and Communications, 80-83 (2000)*
  2000
• Hiramoto, M., Kawamura, H., Yamamoto, M., Suzuki, K. and Ohuchi, A.: "Co-evolutionary Design of Team Level Play in Soccer Server", Proceedings of International Technical Conference on Circuits/Systems,Computers and Communications, 727-730 (2000)*
  2000
• Motoyama, K., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Evolutionary Design of Learning State Space for Small Airship Control", Animals to Animats 6, J. A. Meyer et al. (Eds.), The MIT Press, 307-316 (2000)*
  2000
• Yamamoto, M., Yamashita, J., Shiba, T., Hirayama, T., Takiya, S., Suzuki, K., Munekata, M. and Ohuchi, A.: "A Study on the Hybridization Process in DNA Computing", DNA Based Computers 5, DIMACS Series 54 in Discrete Mathematics and Theoretical Comput・・・
  2000
  Yamamoto, M., Yamashita, J., Shiba, T., Hirayama, T., Takiya, S., Suzuki, K., Munekata, M. and Ohuchi, A.:
  
  "A Study on the Hybridization Process in DNA Computing",
  
  DNA Based Computers 5, DIMACS Series 54 in Discrete Mathematics and Theoretical Computer Science, 101-110 (2000)*
• Motoyama, K., Suzuki, K., Yamamoto, M. and Ohuchi, A.: "Design of Adaptive Self-Navigated Airship in Simulated Environment", Proceedings of The 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-Th・・・
  2000
  Motoyama, K., Suzuki, K., Yamamoto, M. and Ohuchi, A.:
  
  "Design of Adaptive Self-Navigated Airship in Simulated Environment",
  
  Proceedings of The 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australlian Society for Operations Research Inc. Queensland Branch, 26-33 (2000)*
• Yamashita, T., Yamamoto, M. and Ohuchi, A.: "Evolution of Cooperation in Dynamic Model of Distributed Social Dilemma", Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Aust・・・
  2000
  Yamashita, T., Yamamoto, M. and Ohuchi, A.:
  
  "Evolution of Cooperation in Dynamic Model of Distributed Social Dilemma",
  
  Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operations Reaserch Inc. Queensland Branch, pp. 152-159 (2000)*
• Ahmad, J., Yamamoto, M. and Ohuchi, A.: "Design of the Mutation Operator for Nurse Scheduling Problem with Pareto Ranking Scheme", Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and・・・
  2000
  Ahmad, J., Yamamoto, M. and Ohuchi, A.:
  
  "Design of the Mutation Operator for Nurse Scheduling Problem with Pareto Ranking Scheme",
  
  Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operations Reaserch Inc. Queensland Branch, 120-127 (2000)*
• Kawamura, H., Yamamoto, M. and Ohuchi, A.: "Improved Multiple Ant Colonies Algorithm for Traveling Salesman Problems", Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Au・・・
  2000
  Kawamura, H., Yamamoto, M. and Ohuchi, A.:
  
  "Improved Multiple Ant Colonies Algorithm for Traveling Salesman Problems",
  
  Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operations Reaserch Inc. Queensland Branch, pp. 74-81 (2000)*
• Nagao, M., Yamamoto, M., Suzuki, K. and Ohuchi, A.: "Evaluation of Face Identification System based on Division of Image Region", Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and A・・・
  2000
  Nagao, M., Yamamoto, M., Suzuki, K. and Ohuchi, A.:
  
  "Evaluation of Face Identification System based on Division of Image Region",
  
  Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operations Reaserch Inc. Queensland Branch, 301-308 (2000)*
• Yamamoto, M. Kawamura, H. and Ohuchi, A.: "Improved Ant Algorithm by Evolving Ant Agents", Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operatio・・・
  2000
  Yamamoto, M. Kawamura, H. and Ohuchi, A.:
  
  "Improved Ant Algorithm by Evolving Ant Agents",
  
  Proceedings of the 2nd Joint International Workshop ORSJ-The Operations Research Society of Japan, Hokkaido Chapter and ASOR-The Australian Soceity for Operations Reaserch Inc. Queensland Branch, 66-73 (2000)*
• DNA computing and its implementation
  YAMAMOTO Masahito; SHIBA Toshikazu; OHUCHI Azuma
  Bioscience & industry, 57, 3, 27, 30, バイオインダストリ-協会, 01 Mar. 1999
  Japanese, 資料形態 : テキストデータ プレーンテキスト
  コレクション : 国立国会図書館デジタルコレクション > デジタル化資料 > 雑誌
• Ants war with evolutive pheromone style communication
  H Kawamura; M Yamamoto; KJ Suzuki; A Ohuchi
  ADVANCES IN ARTIFICIAL LIFE, PROCEEDINGS, 1674, 639, 643, 1999, [Peer-reviewed]
  English, Scientific journal
• MTS approach to facial image recognition
  Mitsuyoshi Nagao; Masahito Yamamoto; Keiji Suzuki; Azuma Ohuchi
  Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, 4, IEEE, 1999
  English, International conference proceedings
• Learning of words in negotiation between autonomous agents
  Hiroyuki Iizuka; Keiji Suzuki; Masahito Yamamoto; Azuma Ohuchi
  Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, 2, IEEE, 1999
  English, International conference proceedings
• Detecting system of repeating regions in a protein sequence
  Sakurada T.; Yamamoto M.; Suzuki K.; Ohuchi A.
  Seibutsu Butsuri, 39, S172, The Biophysical Society of Japan General Incorporated Association, 1999
  Japanese
• Hirayama, T., Shiba, T., Yamamoto, M., Tsutsumi, K., Takiya, S., Munekata, M., Suzuki, K., and Ohuchi, A.: "An Analysis of DNA-based Computing Process" Proceedings of AROB'99 (The Fourth International Symposium on Artificial Life and Robotics, pp. 358・・・
  1999
  Hirayama, T., Shiba, T., Yamamoto, M., Tsutsumi, K., Takiya, S., Munekata, M., Suzuki, K., and Ohuchi, A.:
  
  "An Analysis of DNA-based Computing Process"
  
  Proceedings of AROB'99 (The Fourth International Symposium on Artificial Life and Robotics, pp. 358-361 (1999)
• Yamamoto, M., Yamashita, J., Shiba, T., Hirayama, T., Takiya, S., Suzuki, K., Munekata, M., and Ohuchi, A.: "A Study on the Hybridization Process in DNA Computing" Preliminary Proceedings of DNA Based Computers 5, pp. 99-108 (1999)
  1999
• Hirayama, T., Shiba, T., Yamamoto, M., Tsutsumi, K., Suzuki, K., Takiya, S., Munekata, M., and Ohuchi, A.: "Experimental Results in DNA Computation: solution of an HPP with eight vertices" Preliminary Proceedings of DNA Based Computers 5, p. 249 (1999)
  1999
• Jan, A., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Evaluation Strategy for Nurse Scheduling Problem with GA" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 615-62・・・
  1999
  Jan, A., Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "Evaluation Strategy for Nurse Scheduling Problem with GA"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 615-628 (1999)
• Nagao, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "A Robust Face Identification System Using MTS" Proceedings of 17th Annual ASI's Taguchi Methods Symposium, pp. 124-142 (1999)
  1999
• Yamamoto, M., Yamashita, J., Shiba, T., Munekata, M., Takiya, S., Suzuki, K., and Ohuchi, A.: "An Analysis of the Hybridization Process in DNA Computing" Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Comput・・・
  1999
  Yamamoto, M., Yamashita, J., Shiba, T., Munekata, M., Takiya, S., Suzuki, K., and Ohuchi, A.:
  
  "An Analysis of the Hybridization Process in DNA Computing"
  
  Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Communications, pp. 359-362 (1999)
• Yamamoto, M., Suzuki, K., and Ohuchi, A.: "An Acquisition of Evaluation Function for Shogi by learning of Self-play" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp.・・・
  1999
  Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "An Acquisition of Evaluation Function for Shogi by learning of Self-play"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 1413-1421 (1999)
• Motoyama, K., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Evolutionary State Space Configuration with Reinforcement Learning for Adaptive Airship Control" Proceedings of the Third Australia-Japan Joint Workshop on Intelligent and Evolutinary Systems, pp・・・
  1999
  Motoyama, K., Suzuki, K., Yamamoto, M., and Ohuchi, A.:
  
  "Evolutionary State Space Configuration with Reinforcement Learning for Adaptive Airship Control"
  
  Proceedings of the Third Australia-Japan Joint Workshop on Intelligent and Evolutinary Systems, pp. 131-138 (1999)
• Nagao, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "A Robust Face Identification System Using MTS" Robust Engineering, 17th ASI's Taguchi Methods Symposium Proceedings, pp. 124-142 (1999)
  1999
• Kawamura, H., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Ants War with Evolutive Pheromone Style Communication" Lecture Notes in Artificial Intelligence 1674, 5th European Conference, ECAL'99, pp. 639-643 (1999)
  1999
• Sakurada, T., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "A Detection of Copy Pattern from PIR Protein Sequence Database" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop,・・・
  1999
  Sakurada, T., Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "A Detection of Copy Pattern from PIR Protein Sequence Database"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 1091-1099 (1999)
• Akiyama, N., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Adaptive Positioning of Soccer Agents with Hybrid Learning System" Proceedings of AROB'99 (The Fourth International Symposium on Artificial Life and Robotics, pp. 759-762 (1999)
  1999
• Iizuka, H., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Development of Competitive Social Behavior Artificial Society" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp・・・
  1999
  Iizuka, H., Suzuki, K., Yamamoto, M., and Ohuchi, A.:
  
  "Development of Competitive Social Behavior Artificial Society"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 582-594 (1999)
• Kawamura, H., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Distributed Scheduling Algorithm with Multi Agent for Vehicle Scheduling Problems" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chap・・・
  1999
  Kawamura, H., Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "Distributed Scheduling Algorithm with Multi Agent for Vehicle Scheduling Problems"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 664-676 (1999)
• Nakatsugawa, M., Yamamoto, M., Suzuki, K., Ohuchi, A., Dan, J., and Teshima, S.: "Prediction of Kan-Sei Model using MTS" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop,・・・
  1999
  Nakatsugawa, M., Yamamoto, M., Suzuki, K., Ohuchi, A., Dan, J., and Teshima, S.:
  
  "Prediction of Kan-Sei Model using MTS"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 914-926 (1999)
• Jan, A., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Nurse Scheduling Problem Applied to GA with Improved Parato Selection Scheme" Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Communications, ・・・
  1999
  Jan, A., Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "Nurse Scheduling Problem Applied to GA with Improved Parato Selection Scheme"
  
  Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Communications, pp. 355-358 (1999)
• Murata, T., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Team Plays of Soccer Agents based on Evolutionary Dynamic Formations" Proceedings of AROB'99 (The Fourth International Symposium on Artificial Life and Robotics, pp. 354-357 (1999)
  1999
• Tanaka, S., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Application of Mahalanobis-Taguchi System to the Prediction of the Prevalence of Infectious Diseases" Robust Engineering, 17th ASI's Taguchi Methods Symposium Proceedings, pp. 143-157 (1999)
  1999
• Iizuka, H., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Learning of Words in Negotiation between Autonomous Agents" Proceedings of IEEE SMC'99 (1999 IEEE International Conference on Systems, Man, and Cybernetics), Vol. 1, pp. 598-603 (1999)
  1999
• Nakatsugawa, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "A Study on the Construction of Effective Mahalanobis Space" Proceedings of 17th Annual ASI's Taguchi Methods Symposium, pp. 110-123 (1999)
  1999
• Nagao, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Acceleration of Evolutionary Image Retrieval System - Introduction of Facial Expression Recognition" Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORS・・・
  1999
  Nagao, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.:
  
  "Acceleration of Evolutionary Image Retrieval System - Introduction of Facial Expression Recognition"
  
  Proceedings of the 15th National Conference of ASOR, incorporative ASOR Queensland Branch and ORSJ Hokkaido Chapter Joint Workshop, pp. 898-913 (1999)
• Iizuka, H., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Negotiation Strategies with Learning of Words" Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Communications, pp. 1222-1225 (1999)
  1999
• Nagao, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "MTS Approach to Facial Image Recognition" Proceedings of IEEE SMC'99 (1999 IEEE International Conference on Systems, Man, and Cybernetics), Vol. 2, pp. 937-942 (1999)
  1999
• Tanaka, S., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "Application of Mahalanobis-Taguchi System to the Prediction of the Prevalance of Infectious Diseases" Proceedings of 17th Annual ASI's Taguchi Methods Symposium, pp. 143-157 (1999)
  1999
• Nakatsugawa, M., Yamamoto, M., Suzuki, K., and Ohuchi, A.: "A Study on the Construction Effective Mahalanobis Space" Robust Engineering, 17th ASI's Taguchi Methods Symposium Proceedings, pp. 110-123 (1999)
  1999
• Tsuchida, Y., Suzuki, K., Yamamoto, M., and Ohuchi, A.: "Development of Separation and Fusion Functions for Multi-Mobile Agent Programming" Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Commun・・・
  1999
  Tsuchida, Y., Suzuki, K., Yamamoto, M., and Ohuchi, A.:
  
  "Development of Separation and Fusion Functions for Multi-Mobile Agent Programming"
  
  Proceedings of the ITC-CSCC'99 (The International Technical Conference on Circuits/Systems, Computers and Communications, pp. 486-489 (1999)
• A study on the hybridization process in DNA computing.
  Masahito Yamamoto; Jin Yamashita; Toshikazu Shiba; Takuo Hirayama; Shigeharu Takiya; Keiji Suzuki; Masanabu Munekata; Azuma Ohuchi
  DNA Based Computers, Proceedings of a DIMACS Workshop, New Brunswick, New Jersey, USA, June 14-15, 1999, 101, 110, DIMACS/AMS, 1999, [Peer-reviewed]
  International conference proceedings
• Interactive Evolutionary Computing. Evaluation of the Image Retrieval System Using Interactive Genetic Algorithm.
  長尾光悦; 山本雅人; 鈴木恵二; 大内東
  人工知能学会誌, 13, 5, 720, 727, The Japanese Society for Artificial Intelligence, Sep. 1998
  Japanese, In the conventional image retrieval, the user has performed the retrieval by using linguistic keywords. However, it is difficult to use this method in the image retrieval treating the user's subjectivity like the impression received from images. Recently, as one of the method treating the user's subjectivity, the interactive genetic algorithms is researched. In this paper, we propose the image retrieval system using the interactive genetic algorithms in the retrieval treating the personal subjectivity. Using the combination of the artificial selection used in the conventional interactive genetic algorithms and natural selection, the number of the branch from a certain generation could be increased. Moreover, the use of the retrieval history can give the user the effective retrieval without performing the complex evaluation of the presented images. We evaluate the system through the experiment using the subjects. In addition, we compare the proposed system with the system using the conventional interactive genetic algorithms which decides the parents by using artificial selection.
• Evaluation of the Image Retrieval System Using Interactive Genetic Algorithm("Interactive Evolutionary Computing")
  Nagao Mitsuyoshi; Yamamoto Masahito; Suzuki Keiji; Ohuchi Azuma
  Journal of Japanese Society for Artificial Intelligence, 13, 5, 720, 727, 社団法人人工知能学会, 01 Sep. 1998
  Japanese, In the conventional image retrieval, the user has performed the retrieval by using linguistic keywords. However, it is difficult to use this method in the image retrieval treating the user's subjectivity like the impression received from images. Recently, as one of the method treating the user's subjectivity, the interactive genetic algorithms is researched. In this paper, we propose the image retrieval system using the interactive genetic algorithms in the retrieval treating the personal subjectivity. Using the combination of the artificial selection used in the conventional interactive genetic algorithms and natural selection, the number of the branch from a certain generation could be increased. Moreover, the use of the retrieval history can give the user the effective retrieval without performing the complex evaluation of the presented images. We evaluate the system through the experiment using the subjects. In addition, we compare the proposed system with the system using the conventional interactive genetic algorithms which decides the parents by using artificial selection.
• A reduction method for theorem proving based on the partial-instantiation technique
  M Yamamoto; A Ohuchi
  DECISION SUPPORT SYSTEMS, 23, 2, 189, 199, Jun. 1998, [Peer-reviewed]
  English, Scientific journal
• Cooperative search based on pheromone communication for Vehicle Routing Problems
  H Kawamura; M Yamamoto; T Mitamura; K Suzuki; A Ohuchi
  IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E81A, 6, 1089, 1096, Jun. 1998, [Peer-reviewed]
  English, Scientific journal
• Collective search algorithm with pheromone communication for Vehicle Routing Problems
  H Kawamura; M Yamamoto; K Suzuki; A Ohuchi
  INTELLIGENT AUTONOMOUS SYSTEMS, 587, 594, 1998, [Peer-reviewed]
  English, International conference proceedings
• Ecological approach to retrieving agents for ambiguous data
  M Nagao; M Yamamoto; K Suzuki; A Ohuchi
  INTELLIGENT AUTONOMOUS SYSTEMS, 631, 638, 1998, [Peer-reviewed]
  English, International conference proceedings
• 「インタラクティブGAに基づく画像検索システムの評価」
  人工知能学会誌, 13, 5, 720, 727, 1998
• H.Kawamura,M.Yamamoto,K.Suzuki,T.Mitamura and A.Ohuchi:"Cooperative Search Based on Pheromone Communication for Vehicle Routing Problems”,IEICE Transactions on Funfamentals of Electronics,Communications and Computer Sciences,E81-A(6):1089-1096(1998)
  1998
• M.Nagao,M.Yamamoto,K.Suzuki and A.Ohuchi:"Multi-Agents Approach for Subjective Image Retrieval”,Proceedings of ITC-CSCC'98:1123-1126(1998)
  1998
• H.Kawamura,M.Yamamoto,K.Suzuki and A.Ohuchi:"Collective Search Algorithm with Pheromone Communication for Vehicle Routing Problems”,Intelligent Autonomous Systems IAS-5,Y.Kakazu et al.(eds.),IOS Press,587-594(1998)
  1998
• M.Yamamoto and A.Ohuchi:"A Reduction Method for Theorem Proving based on the Partial-Instantiation Technique”,Decision Support Systems,23(2):189-199(1998)
  1998
• H.Kawamura,M.Yamamoto,K.Suzuki and A.Ohuchi:"Bottom-Up Planning Approach Based on Distributed Pheromone Information”,Proceedings of ITC-CSCC'98:1475-1478(1998)
  1998
• M.Nagao,M.Yamamoto,K.Suzuki and A.Ohuchi:"Ecological Approach to Retrieving Agents for Ambiguous Data”,Intelligent Autonomous Systems IAS-5,(Y.Kakazu et al.Eds.),IOS Press,631-638(1998)
  1998
• M.Yamamoto,H.Kawamura,K.Suzuki and A.Ohuchi:"Collective Approach for Combinatorial Optimization Problems”,Proceedings of ITC-CSCC'98:1479-1482(1998)
  1998
• M.Yamamoto,N.Okada,K.Suzuki and A.Ohuchi:" Multiple Alignment of Amino Acid Sequences by Parallel Genetic Algorithm”,Intelligent Autonomous Systems ,IOS Press,Y.Kakazu et al.(Eds.),IOS Press,743－748(1998)
  1998
• T.Sakurada,M.Yamamoto,K.Suzuki and A.Ohuchi:"An Introduction of Copy Pattern in Amino Acid Sequences”,Proceedings of ITC-CSCC'98:277-280(1998)
  1998
• A.Jan,M.Yamamoto,K.Suzuki and A.Ohuchi:"A Study on Fitness Landscape of Genetic Algorithm for Optimization Problems”,Proceedings of ITC-CSCC'98:1235-1238(1998)
  1998
• Theorem proving based on the partial instantiation technique
  Masahito Yamamoto; Azuma Ohuchi; Toshio Ohyanagi
  Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi), 79, 4, 110, 118, John Wiley and Sons Inc., 1996, [Peer-reviewed]
  English, Scientific journal
• Theorem Proving Based on the Partial Instantiation Technique
  Yamamoto Masahito; Ohyanagi Toshio; Ohuchi Azuma
  The Transactions of the Institute of Electronics, Information and Communication Engineers. A, 78, 7, 864, 871, 一般社団法人電子情報通信学会, 25 Jul. 1995
  Japanese, Scientific journal, 定理自動証明に対するこれまでの研究として,1965年にRobinsonによって提案された導出原理に基づくさまざまな方法,戦略などが提案されており,現在の定理証明システムの多くはこの導出原理に基づいている.これに対して,Jeroslowは1988年に部分例示手法を提案している.しかしながら,Jeroslowの提案した方法は関数記号を含まない論理式のみを対象としていること,また,節形式を前提としていないために効率が悪いことなどの欠点があった.筆者らはこのこのJeroslowの方法を改善して,関数記号を含まない節形式の論理式の充足可能性を判定する手続きを提案して,その有効性を示している.本論文では,この手続きを拡張した定理証明手続きを提案する.すなわち,関数記号を含む論理式を扱えるようにしている.また,本手続きが完全であることの証明を与える.更に,比較実験を行い本手続きの有効性について検討する.
• A procedure for satiosfiability problems based on the partial instantiation technique
  Masahito Yamamoto; Azuma Ohuchi; Toshio Ohyanagi
  Electronics and Communications in Japan (Part III: Fundamental Electronic Science), 78, 9, 94, 103, 1995, [Peer-reviewed]
  English, Scientific journal
• A Theorem Proving Procedure based on the Partial In-stantion Technique
  YAMAMOTO MASAHIKO; OHYANAGI TOSHIO; OHUCHI AZUMA
  全国大会講演論文集, 49, 3, 13, 14, 一般社団法人情報処理学会, 20 Sep. 1994
  Japanese, Jeroslow は関鍵記号を含まない論理式の充足可能性判定のための部分例示手法の理論的枠組みを提案している.部分例示手法は真理値の割当てを用いることによって節の増加を抑えようとするものである.しかしながら,Jeroslowの方法では関数記号を含む論理式は扱うことができない.本稿では,関数記号を含む論理式に対しての部分例示手法に基づいた定理自動証明手続きを提案する.この手続きは節形式の論理式を扱うが,そのことによって一般性を失うことはなく,むしろ Jeroslow の方法より効率的であることを示す.また,完全性が成り立つことの証明を与えている.さらに,導出原理に基づく方法との比較実験によって本手続きの有効性を示す.
• An Algorithm for .BETA. Clause Satisfiability Problem in Propositional Logic.
  大柳俊夫; 山本雅人; 大内東
  電気学会論文誌 C, 114, 7/8, 796, 804, 電気学会, Jul. 1994
  Japanese, Scientific journal, The satisfiability problem (SAT) is one of the important problems in the field of computer science, since it is well known NP-complete problem. The problem is well studied and many valuable results are reported in the literature. We have already proposed IEMSAT algorithm as one of SAT algorithms. Recently, J. N. Hooker made a study of resolution for a set of β clauses. A β clause is a clause that has an additional quantitative condition. The condition is that a β clause is true if and only if at least number of β literals in the clause are true. He also referred to β SAT problem that is SAT consists of β clauses. He, however, did not propose efficient algorithm for it as yet.
  This paper intends to present β SAT algorithm ( IEMBSAT ) that is an extended variant of IEMSAT. Some relations between a β clause and a clause are also clarified. Some computational experiments are made to show the effectiveness of IEMBSAT.
• SAT Algorithm Based on Implicit Enumeration Method
  Ohyanagi Toshio; Yamamoto Masahito; Ohuchi Azuma
  IPSJ Journal, 34, 12, 2464, 2473, 一般社団法人情報処理学会, 15 Dec. 1993
  Japanese, The satisfiability problem (SAT) is one of well-known problems in the field of computer science. Many researchers in this field attempted to develop an algorithm for solving this problem. Among them Davis and Putnam succeeded to develop so-called Davis-Putnam method. Recently some researchers in the field of Operations Research applied mathematical programming theory to SAT. This approach intends to solve SAT by not symbolical computation but numerical one. This paper intends to propose new SAT algorithm based on implicit enumeration method that is one of algorithms for general O-1 integer programming problems. Furthermore, a detailed comparison between the proposed method and Davis-Putnum method is made. The result shows that the proposed method and Davis-Putnum method are closely related. Some computational experiences are also made to verify effectiveness of the proposed method. As a result, the method solved all the test problems faster than Davis-Putnam method and Kamath's method.
• Rubber Hand Illusion下における触覚刺激の時間順序判断
  内野 敬介; 飯塚; 博幸; 山本 雅人
  第15回計測自動制御学会システムインテグレーション部門講演会論文集(SI2014), 185, 188, [Peer-reviewed]
  Japanese, Symposium
• 一者と二者間ニューロフィードバックによるトレーニング効果の比較
  宮澤 初穂; 飯塚; 博幸; 山本 雅人
  第15回計測自動制御学会システムインテグレーション部門講演会論文集(SI2014), 164, 167, [Peer-reviewed]
  Japanese, Symposium
• コンピュータHexにおける大域的・局所的観点に基づく局面評価関数の分析
  高田 圭; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  第15回計測自動制御学会システムインテグレーション部門講演会論文集(SI2014), 149, 152, [Peer-reviewed]
  Japanese, Symposium
• 多者間での身体的相互作用による個性の発現
  齋藤 宗太郎; 飯塚; 博幸; 山本 雅人
  情報処理北海道シンポジウム2014講演論文集, 268, 271, [Peer-reviewed]
  Japanese, Symposium
• 二者間における協力ニューラルフィードバックトレーニング
  宮澤 初穂; 飯塚; 博幸; 山本 雅人
  情報処理北海道シンポジウム2014講演論文集, 64, 67, [Peer-reviewed]
  Japanese, Symposium
• 畳み込みニューラルネットワークによる動画データを用いたエージェント行動癖の認識
  遠峰 孝太; 飯塚; 博幸; 山本 雅人
  情報処理北海道シンポジウム2014講演論文集, 26, 29, [Peer-reviewed]
  Japanese, Symposium
• 観光地における屋外Wi-Fi環境整備の実証実験についてー旭川冬まつりと道庁赤レンガ前庭での事例ー
  山本 雅人; 飯塚; 博幸 伝法 毅
  観光情報学会第9回研究発表会, 44, 47, [Peer-reviewed]
  Japanese, Symposium
• 局面ネットワークの媒介中心性に着目したHexゲーム戦略
  高田 圭; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  電子情報通信学会技術報告, 113, 459, 7, 12, [Peer-reviewed]
  Japanese, Symposium
• 人間と機械の相互学習によるロボット操縦手法の提案
  斎藤 健太郎; 飯塚; 博幸; 山本 雅人
  第13回複雑系マイクロシンポジウム講演論文集, 85, 90, [Peer-reviewed]
  Japanese, Symposium
• 被災がれき量推定のための画像データを利用した建造物の倒壊領域特定
  利根川; 凛; 飯塚; 博幸; 山本; 雅人; 古川; 正志; 大内 東
  第13回複雑系マイクロシンポジウム講演論文集, 69, 72, [Peer-reviewed]
  Japanese, Symposium
• ネットワーク指標を用いた Hex 戦略の解析
  高田 圭; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  第13回複雑系マイクロシンポジウム講演論文集, 65, 68, [Peer-reviewed]
  Japanese, Symposium
• ゲーム木展開条件に基づくUCT 探索法のHex ゲーム戦略の解析
  三橋 允; 本庄; 将也; 飯塚; 博幸; 山本 雅人
  第13回複雑系マイクロシンポジウム講演論文集, 61, 64, [Peer-reviewed]
  Japanese, Symposium
• 被災がれき量推定に向けた航空写真を用いた建造物の変化抽出
  利根川; 凛; 飯塚; 博幸; 山本; 雅人; 古川; 正志; 大内 東
  廃棄物資源循環学会第6回東北支部研究発表会予稿集, 31, 32, [Peer-reviewed]
  Japanese, Symposium
• 東日本大震災から学ぶ災害リスクに対する事業継続のための経営戦略
  吉成 昇; 上野; 篤; 大柳; 幸彦; 大内; 東; 山本 雅人
  廃棄物資源循環学会第6回東北支部研究発表会予稿集, 27, 28, [Peer-reviewed]
  Japanese, Symposium
• mage-Based Classification of Severe Obstructive Sleep Apnea Using the Morphology of Upper Airway Soft Tissues
  Tsuyoshi Mikami Kazuya; Yonezawa Yohichiro; Kojima; Masahito Yamamoto; Masashi Furukawa
  2014 International Symposium on Biomedical Imaging (ISBI 2014), [Peer-reviewed]
  English, International conference proceedings
• ABEGA-2: Improved Attraction Basin Estimating Genetic Algorithm for High Dimensional Space
  Zhuoran Xu; Masahito Yamamoto
  Proceedings of 19th International Symposium on Artificial Life and Robotics AROB, 275, 279, [Peer-reviewed]
  English, International conference proceedings

• Development and Evaluation of an Action Prediction Model for Three-Player Mahjong Using Vision Transformer
  Yokoyama,Kota; Tamura,Yasumasa; Yamamoto,Masahito, ゲームプログラミングワークショップ2025論文集, 2025, 83, 88, 07 Nov. 2025
  情報処理学会, Japanese
• Acquiring Contextualized Chord Embeddings through Self-Supervised Learning with Transposition Awareness
  川喜田塔馬; 野口渉; 田村康将; 山本雅人, 情報処理学会研究報告(Web), 2025, MUS-142, 2025
• 人工知能を用いたマウスの痛み表情の評価
  小林幸司; 坂本直観; 宮崎優介; 山本雅人; 村田幸久, 日本獣医学会学術集会講演要旨集, 168th, 2025
• Accurate Prediction of Expected Score Distributions in Digital Curling Based on Win Probability Tables
  CHIBA Rintaro; TAMURA Yasumasa; AIHARA Shimpei; YAMAMOTO Masahito, Sports Informatics and Technology, 2025, C-2-3, 2025
  In this study, we aim to improve the prediction accuracy of expected score distributions in the context of digital curling. To this end, we incorporate features derived from a win probability table into a Transformer-based model. A win probability table provides the statistical win rate for each combination of point difference and the number of remaining ends, serving as contextual information that complements stone placement data. In prior research, game context was represented only by one-hot vectors of point difference and end number, without explicitly utilizing strategic statistics. However, the shape and bias of expected score distributions are likely influenced by such higher-level information. Therefore, we propose a method to combine the win probability table, encoded as a 17-dimensional vector, with the conventional game information and stone features as model input. We constructed a dataset with 95 variations of game situations for each stone configuration and generated expected score distributions via stochastic simulation of final shots. Experimental results show that the proposed model consistently achieves lower validation and test losses than the baseline. This suggests that incorporating win-rate–based features contributes to enhanced prediction accuracy and generalization performance., The Japan Society of Mechanical Engineers, Information Processing Society of Japan, Japanese
• Tactical Analysis in Mixed Doubles Curling:: Impact of the Non-Hammer Team's First Shot on Scoring Based on Score Differential
  TADOKORO Yuichi; AIHARA Simpei; MASUI Fumito; YAMAMOTO Masahito, Sports Informatics and Technology, 2025, P-1-7, 2025
  Mixed doubles curling is a discipline that differs significantly from the general four-player game, featuring unique rules such as five stones per end, and the presence of pre-positioned stones. These distinctive elements require different tactical approaches, yet limited research has been conducted to analyze game strategies specific to mixed doubles.This study focuses on the impact of the non-hammer team’s first shot in each end, particularly examining how the position of this shot correlates with scoring outcomes. Using data from matches between world top level mixed doubles teams, including games from the 2024–2025 season and the 2024 World Mixed Doubles Championship, statistical methods were employed to evaluate shot trends and their effectiveness under different score situations and stone placements.The results highlight key patterns in shot selection, suggesting that certain shot types and positions are more effective in specific game contexts. These findings provide valuable insights for strategic decision-making and are expected to support performance improvement and tactical development in high-level mixed doubles curling., The Japan Society of Mechanical Engineers, Information Processing Society of Japan, Japanese
• Extraction of Climbing Moves for Performance Quantification in Bouldering
  KIMURA Kieta; TAMURA Yasumasa; YAMAMOTO Masahito, Sports Informatics and Technology, 2025, A-2-2, 2025
  Sport climbing has gained in popularity in recent years, particularly with its appearance as an Olympic sport. Among its disciplines, bouldering involves short, high intensity climbs that require diverse movement strategies. While motion analysis in climbing has been explored, most studies focus on beginner instruction and use coarse phase-based segmentation. Few have addressed the concept of specific "moves"—distinct climbing actions commonly used in practice and recognized by climbers as key to performance. This study proposes a method to detect and classify climbing moves from pose estimation data as a step toward performance quantification. We constructed a dataset of 71 fixed-camera climbing videos and extracted frame-wise skeletal sequences using a fine-tuned 2D pose estimation model. Based on these sequences, we trained a Transformer-based classification model to assign one of seven predefined move labels to each frame. Additionally, a 5-class setting was evaluated by merging infrequent labels. The results demonstrate the potential for move-level classification using pose data alone. Future work will focus on real-world deployment and integration with performance assessment tools., The Japan Society of Mechanical Engineers, Information Processing Society of Japan, Japanese
• Learning Settlers of Catan by GCN with Heterogeneous Graph Board Representation
  Hikaru, Takahashi; Wataru, Noguchi; Yasumasa, Tamura; Masahito, Yamamoto, ゲームプログラミングワークショップ2024論文集, 2024, 95, 102, 15 Nov. 2024
  「カタンの開拓者たち」のボードは正六角形の組み合わせで構成されており，異なる 3 種類のマス目が相互に影響を与える．そのため考慮すべき状態空間が複雑かつ広大となり，人工知能（AI）を研究することは非常に挑戦的な取り組みとなる．本研究ではカタンのボードを効果的に捉えるため，グラフ表現による GCN(Graph Convolutional Networks) モデルを提案し，先行研究の行列表現を用いた CNN（Convolutional Neural Networks）モデルとの性能比較を行った．ルールベース AI の行動選択を予想する教師あり学習の結果， GCN は CNN を上回る性能を示し，グラフ表現の有効性が確認された。強化学習による対戦実験においては，学習の収束には至らなかったものの，現時点で GCN が CNN と同等の学習進捗を示している．より適切に学習すれば，教師あり学習と同様に GCN が CNN の性能を上回ることが期待される．
  The board of “Settlers of Catan” consists of a combination of regular hexagons, where three different types of tiles interact with each other, resulting in a complex and expansive state space that makes AI research highly challenging. In this study, we propose a Graph Convolutional Networks (GCN) model using a graph representation to effectively capture the structure of the Catan board and compare its performance against a Convolutional Neural Networks (CNN) model, which uses a matrix representation as in previous research. In a supervised learning task predicting the actions of a rule-based AI, the GCN model outperformed the CNN model, demonstrating the effectiveness of the graph representation. While the reinforcement learning experiment did not converge, the GCN model showed comparable learning progress to the CNN model at the current stage. It is expected that with further training, the GCN will surpass the performance of the CNN, as observed in the supervised learning task., 情報処理学会, Japanese
• 浮世絵のランドマーク付き顔画像に対する3D-aware画像合成
  新井田, 力; 野口, 渉; 山本, 雅人, 第86回全国大会講演論文集, 2024, 1, 175, 176, 01 Mar. 2024
  画像を三次元的に解釈する技術は高度な画像処理・映像処理・3Dモデリングにおいて重要な課題であり、近年の深層学習に基づく3D-aware画像合成はその基礎となる技術として期待されている。しかし既存の3D-aware画像合成の研究は写実的な画像の領域に限定されており、浮世絵のような非写実的な画像に対しては行われていない。本研究では明確な輪郭線など非写実的な特徴を持つ領域の一つである浮世絵画像に対して、ランドマークラベルを利用した3DMMにより推定されるカメラ位置を利用することで3D-aware画像合成を実現した。また輪郭線などの非写実的な特徴が立体構造に与える影響の観察を行った。, 情報処理学会, Japanese
• 機械学習を利用した質的・量的なマウスの痒み評価
  小林幸司; 宮崎優介; 坂本直観; 山本雅人; 村田幸久, 日本獣医学会学術集会講演要旨集, 167th, 2024
• Pre-training of Deep Neural Network for 3D Image Recognition using Fractal Structure Data
  原田航平; 野口渉; 田村康将; 山本雅人; 山本雅人, 情報科学技術フォーラム講演論文集, 23rd, 2024
• Use of endgame databases in EinStein wuerfelt nicht
  佐藤辰哉; 野口渉; 田村康将; 山本雅人, 情報処理学会研究報告(Web), 2024, GI-51, 2024
• CNNを用いた3人麻雀における行動選択学習
  横山航汰; 野口渉; 田村康将; 山本雅人, 情報処理学会研究報告(Web), 2024, GI-52, 2024
• 機械学習を利用したマウスの痒みの質と量の解析
  小林幸司; 宮崎優介; 坂本直観; 山本雅人; 村田幸久; 村田幸久; 村田幸久, 日本実験動物学会総会講演要旨集(Web), 71st, 2024
• 飼育下のツシマヤマネコの発情兆候把握に向けたAIによる行動検出
  佐藤大地; 野口渉; 田村康将; 井上啓; 瀬尾亮太; 山本雅人, Animal Behaviour and Management, 60, 3, 2024
• Comparison and Examination of Behavior Detection Models for Automated Identification of Signs of Estrus in the Tsushima leopard cat in Captivity
  佐藤大地; 野口渉; 田村康将; 井上啓; 瀬尾亮太; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 25th, 2024
• 「人工知能と法律」 研究タスクフォース2022年座談会 「カーリングとAI」
  鳥海 不二夫; 実積 寿也; 宍戸 常寿; 加藤 尚徳; 山本 雅人, 情報法制レポート, 5, 90, 102, 2024
  一般財団法人 情報法制研究所, Japanese
• Consideration and Practice on Tracking Methods for Zoo Elephants Using Single Surveillance Camera Footage
  Ken, Nishioka; Wataru, Noguchi; Hiroyuki, Iizuka; Masahito, Yamamoto, 情報処理学会論文誌トランザクション デジタルプラクティス(Web), 採録決定, 3, 60, 69, 2024, [Peer-reviewed]
  動物園における飼育動物の行動観察は，動物の健康管理と飼育環境の改善のために欠かせない．しかし，監視カメラ映像からの行動記録は飼育員が映像を目視で確認しながら記録をしており，負担が大きいものとなっている．そこで筆者らは，札幌市円山動物園の協力のもと，飼育場の監視カメラ映像からの動物の行動記録（エソグラム）作成の自動化をめざしている．本稿では，行動記録の自動化のベースとなる個体識別を伴ったトラッキング手法の検討とその実践について述べる．提案手法は，物体検出，個体識別，トラッキングのそれぞれの既存手法を組み合わせる手法である．筆者らは，札幌市円山動物園のゾウ舎における2頭のゾウを対象に実験をおこない，提案手法の有効性を示し，さらに，実践を通して得られた知見をまとめた．
  Behavioral observation of animals in zoos is indispensable for animal health management and improvement of the breeding environment. However, zookeepers currently record the behavior of animals from surveillance camera images while visually checking the images, which places a heavy burden on the zookeeper. Therefore, we have developed a new method to record the behavior of animals in the zoo keeping area using video surveillance cameras, in cooperation with the Sapporo Maruyama Zoo. We aim to automate the recording of animal behaviors (ethograms) from surveillance camera images of zookeepers. In this paper, we propose a tracking method with identification as a basis for the behavior identification. In particular, we describe a method for tracking the location of individual elephants over a long period of time. Experimental results show the effectiveness of the method on two elephants in the elephant house. We created a dataset by acquiring images from surveillance cameras at the Maruyama Zoo and annotating the positions and individuals of the elephants. We evaluated the dataset for nearly 24 hours and obtained high accuracy with the proposed method., 情報処理学会, Japanese
• 4 動物園におけるAI による動物の行動検出技術の開発と実装
  山本 雅人, 実験医学, 42, 6, 944, 2024
  Japanese
• Combined Graph Representation and Image Representation in TUBSTAP
  Hikaru, Takahashi; Wataru, Noguchi; Masahito, Yamamoto, ゲームプログラミングワークショップ2023論文集, 2023, 125, 130, 10 Nov. 2023
  ターン制戦略ゲームは人気のゲームジャンルであるが，未だ人間よりも強い AI は実現されていない．これは合法手の多さや地形の要素など，幾つかの扱いにくい性質があるためである．本稿ではターン制戦略ゲームの研究用プラットフォームである TUBSTAP を題材として，地形の要素を考慮できるグラフ表現を提案し，地形を含むマップで盤面評価を行う Graph Convolutional Networks(GCN) の学習を行った．さらに画像表現とグラフ表現を併用した統合モデルを複数提案し学習を行った．その結果，提案したグラフ表現を用いた GCN は，高精度な盤面評価が可能であることを確認した．提案した統合モデルはいずれも過学習の傾向があり GCN の性能に劣る結果となったが，複数の統合方法で過学習の大きさの差異を示すことができた．
  While turn-based strategy (TBS) games are a popular game genre, AI that is stronger than humans has yet to be realized. This is due to some unwieldy characteristics of TBS games, such as the large number of legal moves and terrain elements. In this paper, using TUBSTAP, a research platform for TBS games, we propose a graph representation that can account for terrain elements and train Graph Convolutional Networks (GCNs) to evaluate the board on a map including terrain. In addition, we propose several integration models that combine image and graph representations and train them. As a result, we confirmed that the proposed GCNs with graph representations are capable of highly accurate board evaluation. Although all the proposed integration models showed a tendency to overfit and were inferior to the performance of GCN, we show differences in the magnitude of overfitting among the different integration methods., 情報処理学会, Japanese
• Acquiring Peripersonal Space Representation Shared Between Vision and Touch by Transformer Autoencoder
  Wataru Noguchi; Hiroyuki Iizuka; Masahito Yamamoto, Proceedings of the Annual Conference of JSAI, JSAI2023, 2G1OS21c05, 2G1OS21c05, Jun. 2023
  Peripersonal space, where individuals interact with the environment within their reach, has multimodal representations in the brain. It is assumed that the multimodal representation of peripersonal space is acquired through interaction with the environment. In this study, we propose a neural network model that acquires a representation of peripersonal space shared between vision and touch through the experience of vision, touch, and proprioception. Our proposed model reconstructs visual and tactile observations corresponding to proprioceptive inputs after integrating the observations through Transformer based on self-attention mechanism. By learning on camera vision and arm touch of a simulated robot and proprioceptive inputs of camera and arm poses, a spatial representation like a map between the spatial coordinates of peripersonal space and visual and tactile observations was constructed in the model. In particular, the spatial map was shared between vision and touch by sharing part of the visual and tactile decoding module., The Japanese Society for Artificial Intelligence, Japanese, Summary national conference
• Multiple Timescales RNNを用いた敵対的模倣学習による時系列の複雑化と構造化
  佐々木, 太樹; 野口, 渉; 飯塚, 博幸; 山本, 雅人, 第85回全国大会講演論文集, 2023, 1, 349, 350, 16 Feb. 2023
  鳥のさえずりは自然界における複雑で階層的構造を持った時系列として知られ，時系列の複雑性が生じる過程では敵対的模倣と呼ばれる個体間の競争が複雑化を促進することがシミュレーション研究により示されている．本研究では，敵対的模倣の中で複雑かつ階層的構造を持った時系列が生じる過程のモデル化を試みる．特に階層的構造の生じる要因が時系列生成を担う神経回路網の階層性にあるとの仮説のもと，複数の時間発展タイムスケールを伴う階層的構造を持つMultiple Timescales RNNにより敵対的模倣学習を行う．提案モデルによる敵対的模倣学習の結果，時系列の複雑性が増加しつつも階層的構造が現れることを示した．, 情報処理学会, Japanese
• Recognition of peripersonal space through touch and proprioception with masked autoencoding
  野口渉; 飯塚博幸; 飯塚博幸; 山本雅人; 山本雅人, 情報処理学会全国大会講演論文集, 2023, 1, 1, 2, 16 Feb. 2023
  本論文では空間に関する事前知識をもたない神経回路網が，触覚と固有受容感覚の経験を通して空間認識を獲得するモデルを提案する．とくに多数の局所的な触覚入力および対応する固有受容感覚を統合することで身体近傍空間の内的なマップを構成する能力に着目する．神経回路網モデルとして，自己注意機構により複数の観測情報を統合するTransformerを用い，入力の一部を欠損させた上で再構築するMasked Autoencodingにより固有受容感覚に対応する触覚の予測学習を行う．シミュレーション上のアームロボットの触覚・固有受容感覚での学習の結果，モデル内部に身体近傍の空間座標と触覚の対応を表す空間マップが構成されることを示した．, 情報処理学会, Japanese
• マウスのひっかき行動を長時間解析できる機械学習法の確立
  村田幸久; 小林幸司; 宮崎優介; 坂本直観; 山本雅人, アレルギー, 72, 6/7, 2023
• 人工知能を用いたマウスの痛み表情の評価
  小林幸司; 山本雅人; 村田幸久; 村田幸久, 日本実験動物学会総会講演要旨集(Web), 70th, 2023
• Deep Learning-based Indoor Temperature Prediction for Air Conditioning Control in Office Buildings
  檜山優毅; 野口渉; 山本雅人; 山本雅人; 宮田大輔; 山本亨, 情報科学技術フォーラム講演論文集, 22nd, 2023
• Proposal of a Multi-Agent System with Other-Intention Estimation Mechanism for Tracking Unspecified Targets
  池野圭; 野口渉; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 24th, 2023
• Mobile robot navigation in the crowded environment using model-based reinforcement learning with RSSM
  嶋田泰大; 佐々木洋子; 野口渉; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 24th, 2023
• Learning of evaluation function and prediction of winning probability of curling based on score difference and ends remaining
  IWASAKI Tomoya; NOGUCHI Wataru; AIHARA Shimpei; YAMAMOTO Masahito, The Proceedings of the Symposium on sports and human dynamics, 2023, A-1-3, 2023
  In curling, strategy is as important as the technique of throwing stones to the desired spot. To evaluate this strategy, a platform called Digital Curling exists that simulates curling on a computer. It is expected that the strategy tested in the simulator will be applied to real curling, and research into curling AI is actively being conducted. In this research, we created a curling AI using this digital curling platform. The proposed model uses a neural network as a position evaluation function to predict the winning rate. In previous models, neural networks were trained with the aim of maximizing the score at each end, and thus cannot make the optimal prediction to win in some game situations. In the proposed model, the score difference and the number of remaining ends are input, and the learning data is also created taking these two factors into consideration. This is expected to make it possible to predict optimal winning rates throughout the game. As a result, in the last shot of the end, proposed model can predict winning rate in situation where the best move would be a blank end, which is a situation that previous models cannot predict. In future research, I would like to predict the winning rate over the entire game by having the model learn all shots from the end., The Japan Society of Mechanical Engineers, Japanese
• 畳み込みニューラルネットワークを用いた色の恒常性の学習によるドレスの色の錯視の再現
  市川, 貴大; 野口, 渉; 飯塚, 博幸; 山本, 雅人, 第84回全国大会講演論文集, 2022, 1, 861, 862, 17 Feb. 2022
  錯視とは視覚に関する錯覚のことである．錯視の原因は脳の補正や予測であると考えられており，ニューラルネットワークモデルに補正や予測を学習させることで錯視を起こすことが示されている．本研究では人によって「青色と黒色」と「白色と金色」の見え方があるドレスの色の錯視の再現を試みる．この錯視の原因の一つとして考えられている色の恒常性の獲得が再現につながると考え，RGB空間で乗算変換（RGB値を定数倍）した画像の復元を畳み込みニューラルネットワークモデルに学習させた．その結果，RGB空間の全ての軸に対して同じ乗算変換を行うと，「青色と黒色」，軸によって異なる乗算変換を行うと，「白色と金色」の見え方に近づくことを示した．, 情報処理学会, Japanese
• 人工知能を用いたマウスのひっかき行動の自動検出法の確立
  小林幸司; 松下誠司; 清水直行; 益子櫻; 山本雅人; 村田幸久, 日本実験動物学会総会講演要旨集(Web), 69th, 2022
• Embodiment of symbolic manipulation using shared module network
  嶋田泰大; 野口渉; 飯塚博幸; 飯塚博幸; 山本雅人; 山本雅人, 情報科学技術フォーラム講演論文集, 21st, 2022
• Artificial Intelligence (AI) Approach for Culing
  山本雅人, 電子情報通信学会技術研究報告(Web), 122, 184(CQ2022 26-46), 2022
• Evaluation of a Manhole Pump Anomaly Predictor Generated by Neural Architecture Search
  SHONAI Michihiro; ASO Katsushi; YAMAMOTO Masahito; HATTORI Takahiko; MAEKAWA Koudai, Proceedings of the Annual Conference of JSAI, JSAI2022, 4Yin227, 4Yin227, 2022
  Many small and medium-sized municipalities that have installed manhole pumps need a way to reduce the waiting time for workers responding to emergency situations at night and to understand the optimal interval for pump inspections. Therefore, we proposed an anomaly predictor that outputs anomaly (emergency) probabilities. The predictor was created by training several neural networks generated by Neural Architecture Search (NAS) using the operating current values of a specific manhole pump with at least three anomaly cases. Subsequently, the best neural network architecture was chosen. As a result, we were able to detect anomalies based on the anomaly probability. Furthermore, in the cases where the predicted anomaly probability was high, the accumulation of dirt inside the manhole pump (a sign of future emergency) was confirmed. These results suggest that NAS could be used to predict and detect unknown signs (characteristics that lead to anomalies) even in the case of a small number of anomalies., The Japanese Society for Artificial Intelligence, Japanese
• 畳み込みニューラルネットワークを用いたマウスのグルーミング行動を自動判別する手法の開発
  坂本直観; 小林幸司; 山本晃子; 益子櫻; 山本雅人; 村田幸久, 日本薬理学雑誌, 156, Supplement, 2021
• Pre-training Method for Small Datasets of Sign Language Recognition by Using Supervised Barlow Twins
  荒木関渉; 野口渉; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 22nd, 2021
• 空調データを用いた深層学習による室温変化予測
  中西 啓太; 野口 渉; 飯塚 博幸; 宮田 大輔; 山本 享; 山本 雅人, 精密工学会学術講演会講演論文集, 2020S, 46, 47, 01 Mar. 2020
  オフィスビルなどの中央管理方式下の空調環境ではオーバーシュートや空調の時間遅れなどが起きやすく電力に無駄が生じやすい．本稿では将来の室温変化量を深層学習を用いて予測し，時間的に早い段階から空調を管理することで上記のような無駄電力削減を目指す．実際に，作成した予測モデルにより季節ごとの室温変化の特性を含めた学習が可能であることがわかった．, 公益社団法人 精密工学会, Japanese
• 深層学習を用いた手話単語認識の自主学習への応用
  松田 啓佑; 野口 渉; 飯塚 博幸; 山本 雅人, 精密工学会学術講演会講演論文集, 2020S, 40, 41, 01 Mar. 2020
  本研究では手話認識の自主学習への応用を試みる．学習者は認識モデルが正しく認識するまで試行錯誤し，正しい手話動作を学習する．しかし，既存の認識モデルは手話の正誤判定のみを返し手話のどの要素が誤っていたかの情報は返さない．そこで手話の重要な要素である手形，手の軌道を個別に特徴抽出し，認識，誤り指摘を行う深層学習モデルを提案する．提案モデルは要素の一部のみが違う単語も分類可能であり精度は66％であった．, 公益社団法人 精密工学会, Japanese
• 3D CNNを用いた定点カメラによる顧客行動の解析
  貝塚 裕; 野口 渉; 飯塚 博幸; 山本 雅人, 精密工学会学術講演会講演論文集, 2020S, 34, 35, 01 Mar. 2020
  一般に小売店の定点カメラ映像には顧客が商品を持ったり購入を迷ったりする様子が捉えられている．これらの映像を解析することで商品への注目度や宣伝効果などが測定できると考えられる．本研究では定点カメラ映像から3D CNNを用いて顧客行動を検出し解析を行う．具体的には「商品を持つ」行動を学習したモデルで行動認識し，その結果から，商品関心度を示すと考えられる商品を持った回数と持っている時間について評価を行う．, 公益社団法人 精密工学会, Japanese
• ゲーム研究の新展開と認知科学(2)
  伊藤毅志; 桝井文人; 松原仁; 山本雅人; 河村隆; 竹川佳成, 日本認知科学会大会発表論文集(CD-ROM), 37th, 2020
• Semi-supervised Action Recognition with Multiple Centers based on SDMM
  寺尾颯人; 野口渉; 飯塚博幸; 飯塚博幸; 山本雅人; 山本雅人, 情報科学技術フォーラム講演論文集, 19th, 2020
• 畳み込みニューラルネットワークを使ったマウスのひっかき行動の自動検出法の開発
  小林幸司; 松下誠司; 清水直行; 益子櫻; 山本雅人; 村田幸久, 日本獣医学会学術集会講演要旨集, 163rd, 2020
• A Deep Neural Network Model for Development of Shared Body Image of Self and Other
  野口渉; 飯塚博幸; 飯塚博幸; 山本雅人; 山本雅人, 情報科学技術フォーラム講演論文集, 19th, 2020
• Water Level Prediction in Waterway by Deep Learning Using Predictive Radar Rainfall in Surrounding Area
  石川拓実; 阿曽克司; 羽黒厚志; 野口渉; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 21st, 2020
• Action classification of captive animals by YOLO and I3D using camera images
  加藤圭吾; 野口渉; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 21st, 2020
• The Judgment of Water Transparency from Aquarium Fixed-Point Camera Images by Deep Learning
  GUO Yifan; NISHIMURA Kiwamu; NOGUCHI Wataru; IIZUKA Hiroyuki; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2020, 2A2-J10, 2020
  Aquariums have the task of water clarity testing for regular water exchange. Water clarity can indeed be detected by chemical reagents or special equipment, while the method is very tedious and complicated. Recently, artificial intelligence has been put to practical use in society, and it can contribute to the efficiency of water exchange using Deep Learning algorithms. In this research, we confirmed that water transparency can be determined using Convolutional Neural Networks, and that the water transparency determination achieved more correct answers better than the human eye. It was shown that a majority decision could improve the accuracy compared to classifying a single image., The Japan Society of Mechanical Engineers, Japanese
• カーリングの競技支援を目的とした工学的アプローチによる実証型研究
  伊藤 毅志; 保木 邦仁; 松原 仁; 山本 雅人, 情報処理, 61(11), 11, 1, 17, 2020
  本稿では，カーリング競技の戦術面を支援することを目指す「カーリングを科学する」研究プロジェクトについて，研究活動を開始した背景とこれまで開発と実証を進めてきた技術（デジタルスコアブック，ストーンの実時間位置計測，戦術シミュレーション，戦術推論AI，ほか）について報告する．本研究では競技者の支援を志向するため，手掛ける技術には利便性や実用性が求められる点が通常の研究とは異なる．, 情報処理学会, Japanese
• AI(人工知能)を活用した動物の動作分類
  加藤修; 石橋佑規; 山本雅人; 飯塚博幸; 酒井裕司, 動物園水族館雑誌, 60, 4, 2019
• デジタルカーリングにおける局面に対する期待得点分布の学習
  安宅耕太郎; 飯塚博幸; 山本雅人, 情報処理学会研究報告(Web), 2019, GI-42, 2019
• ゲーム研究の新展開と認知科学
  伊藤毅志; 松原仁; 山本雅人; 狩野芳伸; 大澤博隆, 日本認知科学会大会発表論文集(CD-ROM), 36th, 2019
• AIによるカーリング戦略
  山本雅人, 日本体育測定評価学会大会プログラム・抄録集, 18th, 2019
• 人工知能(AI)を用いた飼育動物の見守りと行動分類
  山本雅人; 飯塚博幸, 日本実験動物学会総会講演要旨集(Web), 66th, 2019
• 動作模倣のための姿勢情報抽出を行う二重オートエンコーダモデル
  西村 亮; 飯塚 博幸; 山本 雅人, 精密工学会学術講演会講演論文集, 2018S, 313, 314, 01 Mar. 2018
  ロボットの動作模倣とはある動作を参考に連続した自己姿勢を形成することである．自由度の異なるロボット間では関節が対応しないため，各姿勢の関節角を用いても動作の模倣は困難である．提案手法では自由度の異なるロボット動作を模倣するため，二重のオートエンコーダにより画像から姿勢情報を抽出し，適切な自己姿勢を生成する学習を行う．提案手法により画像から抽出した姿勢情報を用いて模倣が可能であることを示す．, 公益社団法人 精密工学会, Japanese
• 深層学習を利用したB-MBR処理方法における汚泥越流検出装置の開発
  ZHANG Liang; 三好太郎; 高田圭; 飯塚博幸; 木村克輝; 山本雅人, 日本水環境学会年会講演集, 52nd, 2018
• Emergence of Swarm Behavior by Deep Q-Network using First Person View Image
  IZUMI Kazunari; IIZUKA Hiroyuki; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2018, 2P2-G13, 2018
  Many animals including birds and fish form different type of swarm and many studies have tried to create swarm behaviors which is like real swarm on computer simulation. The most famous model is Boids proposed by Reynolds. In Boids, individuals just follow three local rules. The model can show the realistic and dynamic swarm behaviors, but it is impossible that all individuals can sense the distances to the others precisely in a real world. The most individual must depend on their vision information. A purpose of this study is to build autonomous agents that behave based on visual images and to create swarm behavior. We use Deep Network for agent's decision making and create swarm behavior. Our results show that from visual image, agents can create swarm behavior., The Japan Society of Mechanical Engineers, Japanese
• Deep Learning Approach for Life Emerged from High-dimensional Data Recognition
  NOGUCHI Wataru; IIZUKA Hiroyuki; YAMAMOTO Masahito, Proceedings of the Annual Conference of JSAI, JSAI2018, 2D2OS21a03, 2D2OS21a03, 2018
  Animal receives high-dimensional and complex raw sensory information. Deep learning can recognize such complex sensory information. We studied a deep learning model called hierarchical recurrent neural network (HRNN) that develops spatial recognition through visuomotor integration learning. In a simulation experiment, the HRNN developed the cognitive map, which is an objective map-like internal model, through only subjective visuomotor experiences. Furthermore, the HRNN also developed spatial recognition through visuomotor sequences by a human subject. These results imply that deep learning model can be used to study real animals’ cognition., The Japanese Society for Artificial Intelligence, Japanese
• LSTMを用いた身体動作に基づくつもりインタフェース
  山本 雅人, 第17回複雑系マイクロシンポジウム講演論文集, 17, 48, 52, 2018
• Extracting Tsumori Behavior by LSTM
  NAKANISHI Keita; IIZUKA Hiroyuki; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2018, 1, 4, 2018
  In recent years, the input interface has evolved diversely, and the inputs to the interface varies from gestures to voices. However, such an interface is predefined for input and output by the designer, and it is not known whether the interface moves as intended by the user. In addition, the interface tends to lose the intuitiveness, as the degree of freedom of the controlled object increases, and to be complicated. It is a big challenge for designers to create an intuitive and easy-to-use interface for all users. In this research, we extract human intention from body movements, especially hand movements, and associate with movements of multi-degree of freedom spider robot, thereby constructing interface to operate robot only from hand movements. Since the hand movements reflects the intention that varies depending on the individual user, the correspondence between the hand movements and the operation of the controlled object is built using machine learning. This aims to create an interface optimized for individual users. The interface constructed in this way had difficulty in operation performance in one subject, but showed sufficient operation performance in other subjects., The Japan Society of Mechanical Engineers, Japanese
• 深層強化学習によるシグナル伝達を介したマルチエージェントフォーメーションの形成
  野口, 渉; 飯塚, 博幸; 山本, 雅人, 第79回全国大会講演論文集, 2017, 1, 659, 660, 16 Mar. 2017
  マルチエージェントシステムにおいてはタスク達成のための含意を形成するためにエージェント間の情報伝達が有効であるが，情報を伝達するシグナルのパターンが予め定められている場合は柔軟な情報伝達が難しい．タスクに取り組む中でのシグナル形成を試みた研究は多数存在し，近年注目される深層強化学習の枠組みにおいてシグナル形成を実現するDIALモデルがある．DIALモデルでは，学習時に受信側エージェントから送信側エージェントに誤差シグナルを伝播することで含意形成に有用なシグナルを獲得する．本研究では，DIALモデルを環境中に分散したマルチエージェントに適用し，シグナルを介した効率的なフォーメーションを試みる．, 情報処理学会, Japanese
• Deep Q-Networkを用いた模倣による動作自動獲得
  中村格; 飯塚博幸; 山本雅人, 情報科学技術フォーラム講演論文集, 16th, 2017
• 運動結果予測の逸脱に伴う非オドボール系列に対する事象関連電位
  石田純一; 飯塚博幸; 山本雅人, 計測自動制御学会北海道支部学術講演会論文集, 49th, 2017
• 人狼ゲームにおける発言の順序関係を考慮した役職推定
  芹沢廉; 飯塚博幸; 山本雅人, 計測自動制御学会北海道支部学術講演会論文集, 49th, 2017
• Scientific approach and challenges of curling study
  Takashi Kawamura; Yoshinari Takegawa; Masahito Yamamoto, IEEJ Transactions on Electronics, Information and Systems, 137, 9, 1137, 1140, 2017
  Institute of Electrical Engineers of Japan, Japanese, Book review
• Evaluation of Acquired Morphologies on Evolution of Virtual Creatures-Influence of Task Complexity to Acquired Morphologies-
  IWADATE Kenji; SUZUKI Ikuo; WATANABE Michiko; YAMAMOTO Masahito; FURUKAWA Masashi, Journal of the Japan Society for Precision Engineering, 82, 6, 595, 601, Jun. 2016
  This study considered the influence of task complexity on evolution of virtual creatures. Creatures consist of rigid primitives, joints, and neural controller and these parameters are evolved with real number coded genetic algorithm. Creatures are evaluated in a virtual environment that implemented physical forces for achieving various simple tasks such as walking, pursuit toward a target, and evasion from obstacles. Acquired shapes of creatures are classified into 4 types according to a feature value named “number of branches”. Experimental results showed that the creature has a specific number of branches obtained a high fitness., The Japan Society for Precision Engineering, Japanese
• Stability of Social Interaction with Different Time Delay of Perception and Movement in Perceptual Crossing Experiment
  SAITOH Sohtaroh; IIZUKA Hiroyuki; YAMAMOTO Masahito, JSAI Technical Report, SIG-KBS, 107, 13, 18, 01 Mar. 2016
  Perceptual Crossing experiment is the method for analyzing human interaction with low dimensions. In this experiment, subjects need the cooperative interaction for the task. In this study, We introduce two different time delay patterns in this experiment, and evaluate the stability of human interaction to the time delay. It shows that although the time delay collapsed the cooperative human interaction human can manage to adapt to the time delay by moving slowly. Our results support that the behavioral social interaction between two is not fully sequential but more like synchronized., The Japanese Society for Artificial Intelligence, Japanese
• 畳み込みニューラルネットワークを用いた一人称視点画像による自己位置推定
  杉中出帆; 飯塚博幸; 山本雅人, 情報科学技術フォーラム講演論文集, 15th, 2016
• デジタルカーリングにおける局面評価関数の学習
  加藤修; 飯塚博幸; 山本雅人, 知能メカトロニクスワークショップ講演論文集(CD-ROM), 21st, 2016
• 畳み込みニューラルネットワークによる局面評価手法を用いたコンピュータHexの開発
  高田圭; 本庄将也; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 17th, 2016
• 人工生物の形態進化における獲得形態の評価 -タスク難易度が及ぼす獲得形態への影響-
  岩館健司; 鈴木育男; 渡辺美知子; 山本雅人; 古川正志, 精密工学会誌(Web), 82, 6, 2016
• 動作分節の獲得による人間と機械の相互学習インタフェース
  齋藤健太郎; 飯塚博幸; 山本雅人, 計測自動制御学会北海道支部学術講演会論文集, 48th, 2016
• 畳み込みニューラルネットワークを用いた運動認識による入力インタフェースの構築
  麻野将平; 飯塚博幸; 山本雅人, 計測自動制御学会北海道支部学術講演会論文集, 48th, 2016
• Self-Localization and Formation Control of Swarm-Robot with Self Organization
  IWADATE Kenji; SUZUKI Ikuo; WATANABE Michiko; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2016, 1A1-04b4, 2016
  This study proposed a self organizing method to localize self position and to define the final destination for formation control of swarm-robot without any bird's-eye camera or landmark., The Japan Society of Mechanical Engineers, Japanese
• Particle Swarm Optimization with Tour Representation for Solving Traveling Salesman Problems
  HONJO Masaya; IIZUKA Hiroyuki; YAMAMOTO Masahito; FURUKAWA Masashi, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, 28, 4, 744, 755, 2016
  In this paper, we propose a new Traveling Salesman Problem (TSP) solver based on Particle Swarm Optimization (PSO) Algorithm. PSO is one of the optimization methods classified into swarm intelligence, and consists of particles. Particles interact and move through solution space to find a better solution. PSO can find a good solution in a short time compared with Genetic Algorithm (GA) in many real-valued optimization problems. Because TSP is a combinatorial optimization problem, we change two points of the original PSO for solving TSP. The first point is that the position of each particle is represented by a tour instead of a vector. The second is that particles move by using Insertion method. Insertion method is an operation to combine a tour and sub-paths of other two tour. We analyze relation between parameters and length of an obtained tour, and indicate a guide to adjust parameters. The performance comparison result shows that the proposed method can find a better solution than Simulated Annealing (SA) and GA., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• Forming Swarm Behavior by Vision-based Autonomous robots using Convolutional Neural Network
  MORITA Megumi; IIZUKA Hiroyuki; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2016, 1A1-05a1, 2016
  Many studies have attempted to create life-like swarm behaviors on computer simulations. The most famous and simple model is Boids proposed by Reynolds where individuals just follow three local rules based on distances and positions to the others. The model can show the realistic and dynamic swarm behaviors but it is not plausible in a sense that all individuals can sense the distances to the others precisely in a real world. We have developed vision-based autonomous robots to form a swarm behavior on 2D environment using a convolutional neural network. This paper extends the model to 3D and investigates how the robots can form a swarm behavior. The results of 3D formation patterns by evolved robots are shown., The Japan Society of Mechanical Engineers, Japanese
• バルーンロボットにおけるニューラルネットワークを用いたPID制御
  永田紘也; 飯塚博幸; 山本雅人; 鈴木恵二; 川村秀憲, 電気・情報関係学会北海道支部連合大会講演論文集(CD-ROM), 2016, 2016
• ニューラルネットワークを用いたバルーンロボット制御
  永田紘也; 飯塚博幸; 山本雅人; 鈴木恵二; 川村秀憲, 情報処理学会研究報告(Web), 2016, ICS-184, 2016
• 人工ニューラルネットワークを用いた動的スケジューリング問題の解法
  横山想一郎; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 17th, 2016
• JSPに対するタブーサーチ法におけるタブーリストの長さと解探索性能の関係
  斎藤渉; 横山想一郎; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 17th, 2016
• Water Flow Modeling and Simulation on Biomass Seaweed
  古川 正志; 小川 純; 山本 雅人; 渡辺 美知子; 澤井 秀, 北海道情報大学紀要 = Memoirs of Hokkaido Information University, 27, 1, 17, 28, Nov. 2015, [Peer-reviewed]
  北海道情報大学, Japanese
• Growth Patterns of See-plant Populations and Their Motion Analysis for Based on Stochastic Architectural Model
  古川 正志; 小川 純; 山本 雅人; 渡辺 美知子; 澤井 秀, 北海道情報大学紀要 = Memoirs of Hokkaido Information University, 27, 1, 29, 40, Nov. 2015, [Peer-reviewed]
  北海道情報大学, Japanese
• Mutual Learning Interface by Minimizing Input Prediction Error
  Kentaro, Saito; Hiroyuki, Iizuka; Masahito, Yamamoto, エンタテインメントコンピューティングシンポジウム2015論文集, 2015, 592, 597, 18 Sep. 2015
  ロボットの構造が複雑になるにつれて,それを操縦するインタフェースも複雑になる.本研究では簡 易なインタフェースにも関わらず,複雑な構造をもったロボットを操縦するための相互学習インタフェー スを提案する.ユーザである人間と機械が相互に学習を行うことで人の学習負荷を軽減してより良いイン タフェースを作り上げる.本稿では,インタフェースとしてフィードフォワードニューラルネットワーク とリカレントニューラルネットワークを用いる.構造の異なるニューラルネットワークをインタフェース に用いてロボット操縦を行い結果を比較すると,リカレントニューラルネットワークを用いて相互学習を 行うことで,学習に時間はかかるものの,操縦性能の高いインタフェースが構築された.
  The user interface becomes complex as the number of degrees of freedom of a robot increase and it becomes difficult to manipulate the robot as a user intends. To this problem, we have proposed a mutual learning interface between human and machine where the machine exploits the prediction errors to read user’s intention. In this paper, we compare feed forward neural network and recurrent neural network as the learning methods on a task of multi-legged robot operation. In our results, the recurrent neural network required more time for learning but showed better performance temporally., 情報処理学会, Japanese
• Game Tree Pruning in Digital Curling
  Shu, Kato; Hiroyuki, Iizuka; Masahito, Yamamoto, エンタテインメントコンピューティングシンポジウム2015論文集, 2015, 412, 417, 18 Sep. 2015
  カーリングには,最適な投球方法の選択において高い戦略性が存在する.近年,カーリングの戦略 をコンピュータで解析するために,デジタルカーリングというコンピュータゲームが開発された.本論文 ではまずデジタルカーリングにボードゲームの探索手法を適用し,盤面状態を局面,投球の初速度と回転 方向を候補手としたゲーム木の作成手法を提案する.さらに,探索の各深さにおいて候補手の評価値に基 づいた枝刈りを行い，その有効性を明らかにした.
  The curling has a high level strategy in deciding how to deliver a stone. In recent years, in order to analyze the strategy of curling with a computer, digital curling have been developed. In this study, we propose a generation method of game tree by applying the search method used in board games to digital curling, where how to deliver (initial velocity and direction of rotation of throwing a stone) and a game state (positions of stones, number of delivery, etc.) are regarded as a move and a node, respectively. Furthermore, we perform pruning in the game tree search based on the evaluation value of the candidate move at each depth of the search, and discuss the effectiveness of pruning., 情報処理学会, Japanese
• F-017 A Look-ahead method for curling with the probabilistic aspects
  Kato Shu; Iizuka Hiroyuki; Yamamoto Masahito, 情報科学技術フォーラム講演論文集, 14, 2, 313, 314, 24 Aug. 2015
  Forum on Information Technology, Japanese
• O-024 Automatic Detection of Collapsed Buildings using Image Analysis for Estimating Disaster Debris Amount
  Tonegawa Rin; Iizuka Hiroyuki; Yamamoto Masahito; Furukawa Masashi; Ohchi Azuma, 情報科学技術フォーラム講演論文集, 14, 4, 479, 480, 24 Aug. 2015
  Forum on Information Technology, Japanese
• 1P1-G08 Occurrence of Rubber Hand Illusion by Asynchronous Stimulation using the Reversal of Temporal Order Judgment of Tactile Stimulation
  UCHINO Keisuke; IIZUKA Hiroyuki; YAMAMOTO Masahito, ロボティクス・メカトロニクス講演会講演概要集, 2015, "1P1, G08(1)"-"1P1-G08(4)", 17 May 2015
  Rubber Hand Illusion (RHI) is a phenomenon that a subject feels that a rubber hand (dummy hand) is their own when the rubber hand and the real hand are stroked synchronously and the subject receives the consistent sensory inputs between visual and tactile sensations. The consistent visuo-tactile sensation is a necessary condition for RHI, however we report that RHI can be induced by an asynchronous stimulations between visual and tactile sensations. In our experiments, the subject is required to cross their arms and given successive stimulations on their each hand. Our experiment is conducted in virtual environment. It is known that such stimulations cause the mis-temporal order judgment. Our results support that arm-crossing confuses the body image and the asynchronous stimulations can induce RHI., The Japan Society of Mechanical Engineers, Japanese
• 2A1-M01 Analysis of AI that can Establish Human Interaction in Perceptual Crossing Experiment
  SAITOH Sohtaroh; IIZUKA Hiroyuki; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2015, "2A1, M01(1)"-"2A1-M01(4)", 17 May 2015
  Perceptual Crossing experiment has been proposed to analyse the human social interaction with low dimensional sensation and motion. The previous study shows that human subjects can distinguish the partner with the distracted moving objects by coordinated behaviors established in two. In order to investigate the coordinated behavior established by human subjects, we design different types of AI programs and test how those programs can interact with human subjects. Our result shows that the turn-taking type AI program is better to reproduce human social interaction., The Japan Society of Mechanical Engineers, Japanese
• 2A1-M04 A study on artificial cerebral network based on STDP
  IWADATE Kenji; SUZUKI Ikuo; WATANABE Michiko; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2015, "2A1, M04(1)"-"2A1-M04(2)", 17 May 2015
  This study aims to propose an artificial neural network based on network topology and learning rule (Spike Timing Dependent Plasticity) of cerebral cortex. Numerical experiments showed that proposed neural network has capability to organize functional area that belongs each input signal., The Japan Society of Mechanical Engineers, Japanese
• Development of Curling AI Program Considering the Probabilistic Features of the Strategy
  KATO Shu; IIZUKA Hiroyuki; YAMAMOTO Masahito, JSAI Technical Report, SIG-KBS, 104, 7, 12, 01 Mar. 2015
  Curling is a sport in which players slide stones on a sheet of ice towards a target area which is segmented into four concentric circles. Digital Curling can simulate the trajectory of the stones and calculate the resultant states after the delivery, so it can be used for supporting the tactics of curling. Different from the conventional testbed for artificial intelligence (AI), the game of Digital Curling require the software to consider the stochastic consequences. In this paper we propose the method to provide better tness estimation with less number of internal physical simulations for a player. The proposed estimation method to find the next move, is embedded to the AI program. By using the several simulation results, the effectiveness of the proposed method is discussed., The Japanese Society for Artificial Intelligence, Japanese
• A Project on Curling as a Science
  伊藤毅志; 桝井文人; 宮越勝美; 河村隆; 山本雅人; 竹川佳成; 柳等; 松原仁, 電子情報通信学会技術研究報告, 115, 118(CNR2015 1-5), 2015
• 腕左右交換状態におけるゴム手錯覚の生起と触覚刺激の時間順序判断
  内野敬介; 飯塚博幸; 山本雅人, 計測自動制御学会システムインテグレーション部門講演会(CD-ROM), 16th, 2015
• 訪日外国人旅行者の増加に向けて—観光情報学の進むべき道 : 5年後の観光産業発展を目指して
  山本 雅人, 観光と情報 : 観光情報学会誌, 11, 1, 20, 22, 2015
  [札幌] : 観光情報学会, Japanese
• 情報学が観光にもたらす影響と効果
  山本雅人, 開発こうほう, 2014年(2月)(607), 27 Jan. 2014
  収集根拠 : インターネット資料収集保存事業（WARP）
  資料形態 : テキストデータ
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他, 北海道開発協会, Japanese
• 生物の恒常性を利用した未経験変動に対する適応
  飯塚博幸; 山本雅人, 自律分散システム・シンポジウム(CD-ROM), 26th, 2014
• Usefulness of Image Analysis on Upper Airway MRI for the Classification of Severe Obstructive Sleep Apnea Syndrome (OSAS)
  三上剛; 米澤一也; 小島洋一郎; 山本雅人; 古川正志, 医用画像情報学会雑誌(Web), 31, 1, 2014
• 1P1-M06 A study on online learned artificial neural network based on STDP(Evolution and Learning for Robotics (2))
  IWADATE Kenji; SUZUKI Ikuo; WATANABE Michiko; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2013, "1P1, M06(1)"-"1P1-M06(2)", 22 May 2013
  This study aims to propose an artificial neural network based on a network topology of cerebellum and learning rule that call Spike Timing Dependent Plasticity. An experiment showed that proposed artificial neural network has capability of supervised learning on a real-time basis without any optimization., The Japan Society of Mechanical Engineers, Japanese
• 1A2-N04 Evolutionary Acquisition of Coordinative Behavior with Dynamic Change of Roles(Evolution and Learning for Robotics (1))
  OOE Ryosuke; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2013, "1A2, N04(1)"-"1A2-N04(4)", 22 May 2013
  This paper describes a coordinative behavior of virtual robots. Virtual robots move on a two-dimensional plane by the law based on the Newton's equations. Motions of virtual robots are controlled by an artificial neural network (ANN). Parameters of an ANN are optimized by a real-coded genetic algorithm so that virtual robots cooperate on catching targets. Targets escape from virtual robots in the opposite direction of the nearest virtual robot. The experimental result shows that two virtual robots are located in front and the rear of a target like a straight line to catch it. It is also shown that the role of a waiting virtual robot changes dynamically to surround a target when the target breaks through the besieging two virtual robots., The Japan Society of Mechanical Engineers, Japanese
• 1A2-N03 Behavior Analysis of Swarm with Complex Network(Evolution and Learning for Robotics (1))
  KATO Ryota; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2013, "1A2, N03(1)"-"1A2-N03(4)", 22 May 2013
  The individual in a swarm emerges controlled behavior by interaction to neighboring individuals. This study observes the swarm consisting of a leader and followers, where the follower are modeled by Boid, and estimates the degree of swarm behavior. Then, the whole network connected by sub-networks, which are made by individuals within a view field of each individual, is analyzed from a viewpoint of the complex network characteristics., The Japan Society of Mechanical Engineers, Japanese
• 1A2-M01 Motion Analysis of Seaweed Population based on Stirring Simulation(Evolution and Learning for Robotics (1))
  OGAWA Jun; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2013, "1A2, M01(1)"-"1A2-M01(4)", 22 May 2013
  Seaweed is a useful material for solving modern industrial problems on processing sewage and reducing carbon dioxide. In order to cultivate seaweed efficiently, it becomes necessary to accelerate seaweed growth by controlling its environment. This study focuses on controlling seaweed twining by water flow. We propose how to measure twining phenomenon by analyzing seaweed motion in simulation. Simulation results show that twining phenomenon is numerically measured by examining water drag distribution and seaweed networks which are made by connecting centers of gravity among contacted seaweed., The Japan Society of Mechanical Engineers, Japanese
• 1A2-N02 Acquisition of Behavior on Artificial Creature by using Musculo-Skeletal Model(Evolution and Learning for Robotics (1))
  MATSUBAYASHI Ryohei; FURUKAWA Masashi; YAMAMOTO Masahito, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2013, "1A2, N02(1)"-"1A2-N02(4)", 22 May 2013
  Behavior acquisition of artificial life research has been carried out extensively. Having been generally used as an actuator behavior is a technique that directly controls the joint, less those using virtual muscles. Virtual muscle control is a control method that takes into account the behavioral characteristics of real creatures. So it can acquire behavioral characteristics that the torque control may be difficult to acquire. In this study, we create fish and frog model using a musculo-skeletal model and skeleton control model, and examine the differences in the behavioral characteristics that have been acquired by it., The Japan Society of Mechanical Engineers, Japanese
• Collaborative Creation of Hierarchical Tags in NicoNico
  高橋 文彦; 山本 雅人; 古川 正志, 研究報告知能システム（ICS）, 2013, 3, 1, 6, 03 Mar. 2013
  Web 上では動画共有サービスの利用，特に国内では YouTube やニコニコ動画の利用が盛んである．ニコニコ動画ではタグにより動画が分類されている．一般に階層化されたタグをユーザに提示すると，ブラウジング効率が上がることが知られており，階層化手法も提案されている．本研究では，共起関係によるタグの類似度とネットワークを用いて，ニコニコ動画のタグを階層化する．Video sharing sites are so popular in Web services in all over world. One of such sites, NicoNico, which deals with video files, is successfully served in Japan. This site uses tags to classify contents of videos. It is known that the desired content is efficiently explored when tag's hierarchical information is given. This study proposes a new method to automatically generate hierarchical structure of tags in NicoNico., Japanese
• A Proposal of Storage Location Assignment Using Co-ocurrence Network of Order Items
  南 賢一; 古川 正志; 山本 雅人, 研究報告知能システム（ICS）, 2013, 10, 1, 6, 03 Mar. 2013
  物流センター内の作業の中で，注文された商品を保管場所から取り出してくるピッキング作業に最もコストを要している．ピッキング作業を効率化する方法の一つに商品の配置の改善が挙げられる．本研究では，注文される商品同士の依存関係を共起ネットワークで表し，生成された共起ネットワークを自己組織化マップにより棚の位置に写像することによる商品配置の方法を提案する．Order picking has a great affect with efficiently controlling a large-scale logistic center. It is important for order picking not only to give workers a good tour plan but also to assign products to the storage shelves in the center. This study proposes a new method how to assign products to the storage using an ordered product relation network and Self-Organizing Map., Japanese
• 画像情報を利用した建造物の変化抽出による被災がれき量推定
  利根川凛; 山本雅人; 古川正志, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• タブレット型端末を用いた人工ペットモデルの作成
  斎藤健太郎; 山本雅人, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• 枝刈りによる既存Hexゲーム戦略におけるUCTアルゴリズムの効率化
  三橋允; 本庄将也; 山本雅人, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• 巡回セールスマン問題に対する粒子群最適化の提案と性能評価
  本庄将也; 山本雅人; 古川正志, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• HEX評価関数への介護中心性の反映
  高田圭; 本庄将也; 山本雅人, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• 群移動シミュレーションにおける相互作用の解析支援システム-柔軟構造体群の移動時に発生する絡みの評価指標設計とその特徴解析-
  小川純; 山本雅人; 古川正志, 情報処理北海道シンポジウム講演論文集, 2013, 2013
• SWIMMING ANIMATS WITHMUSCULOSKELTAL STRUCTURE
  鈴木 育男; 山本 雅人, IADIS International Journal on Computer Science and Information Systems, 7, 152, 164, 2013, [Peer-reviewed]
• Propose an information propagation model with the time delay
  KOMATSU, Takuya; SUZUKI, Ikuo; YAMAMOTO, Masahito; FURUKAWA, Masashi, 第13回公益社団法人計測自動制御学会システムインテグレーション部門講演論文集, 190, 195, 18 Dec. 2012
  Rapid spread of the Internet has changed the behavior of the information propagation process. In this paper, we propose an information propagation model with the time delay, because the timing for receiving the information is different among users. Therefore, the proposed model considers the lifestyle of the Internet users. An analysis of the information propagation process by using our proposed model is presented., 社団法人 計測自動制御学会, Japanese
• 動的近傍競合学習によるコミュニティ分割手法
  小野寺大地; 鈴木育男; 山本雅人; 古川正志, 全国大会講演論文集, 2012, 1, 413, 415, 06 Mar. 2012
  我々の社会は無数の人間が相互に関係を持ちながら成り立っている.これらは,単体で見れば個性など様々な特性が存在するが,関係という一点を見ることで一つの大きなネットワークとみなすことができる.このネットワーク内での関係をリンクと呼び,コミュニティとはノードの特性に関係なくリンクが密に結合したネットワークの部分集合を指す.コミュニティ分割は,ネットワーク上のコミュニティを取り出し,それらの特性を解析することを目的としている.これらを解決するアルゴリズムとしてCNM法など既存手法が挙げられるが,ノード数が多いネットワークやリンク密度が高いネットワークには適用が難しい.本研究では,学習近傍が動的に変化する競合学習を用いることで,この問題を解決する手法を提案する., 一般社団法人情報処理学会, Japanese
• コミュニティ分割問題における動的近傍競合学習を用いた解法
  小野寺大地; 鈴木育男; 山本雅人; 古川正志, ネットワーク生態学シンポジウム予稿集(CD-ROM), 8th, 2012
• 食物網における流れの入出の区別に基づく部分種集合の分類
  原田恵雨; 鈴木育男; 山本雅人; 古川正志, ネットワーク生態学シンポジウム予稿集(CD-ROM), 8th, 2012
• An Evolving Network Model with Dynamic Variation of the Performance by Attribute and Relation Structure
  小笠原 寛弥; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理学会論文誌, 52, 10, 2934, 2943, 15 Oct. 2011
  「行為を決定するのは，行為者の属性と自身を取り囲む関係構造である」これはネットワーク分析における基本的な考え方である．行為者間の相互作用とそれにともなう行為の変化は，ネットワークの性質に大きな関わりを持っており，そのダイナミクスは重要な研究課題である．本研究ではこうした考え方に代表される，相互作用がはたらく集団におけるネットワーク成長を結合振動子によりモデル化する．これは結合振動子が，振動子自身の要素として固有振動数と位相を持ち，その固有振動数と他の振動子との位相差による作用により，自身の振動数を決定する特性を持つためである．行為者間の関係と結合振動子間の関係は類似している．我々は以上の背景に基づき，ネットワーク成長モデルを提案し，その性質や構造，ダイナミクスについて議論する．A doer's action is dominated by his attribute and relationship. This relation-ship makes some network structure. The analysis of the network is based on this fundamental idea. We propose a new growing network model, which consists of coupled oscillators with their attributes on the network. We regard each oscillator and network as the doer act and relationship, respectively. Each oscillator is defined by its own characteristic frequency and phase as its attribute. The oscillator's phase is determined by differences between it and other oscillators' phase, both of which are connected on the network. This feature resembles the doer's action. We examine the properties and dynamics of the proposed model., 情報処理学会, Japanese
• 1A1-M15 A Study on Falling Cat Landing Problem Using Physics Modeling(Evolution and Learning for Robotics)
  Xu Zhuoran; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi; Ban Xiaojuan, ロボティクス・メカトロニクス講演会講演概要集, 2011, "1A1, M15(1)"-"1A1-M15(4)", 26 May 2011
  A cat can land safely on the ground from any posture in free fall with no initial angular momentum. To right itself, the cat does complex motion to overcome the contradiction between the rotation of its body and the conservation law of angular momentum. This study explores how to control the cat posture in a space based on physics modeling and evolutionary neural networks., The Japan Society of Mechanical Engineers, English
• Neural classification of snoring sounds for the detection of oral breathing during snoring
  Tsuyoshi Mikami; Yohichiro Kojima; Masahito Yamamoto; Masashi Furukawa, Proceedings of the 8th IASTED International Conference on Biomedical Engineering, Biomed 2011, 17, 23, 2011, [Peer-reviewed]
• 行為者の属性・関係構造による行為の動的変化を考慮したネットワーク成長モデル
  小笠原 寛弥; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2010, 77, 84, 02 Oct. 2010
  情報処理学会北海道支部, Japanese
• 人工生物のための形態創発可能な遺伝子表現型に関する研究
  萬谷 和之; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2010, 2010, 133, 138, 02 Oct. 2010
  情報処理学会北海道支部, Japanese
• Proposal of the network growth model by influence of community structure
  Miyoshi, Eiji; SUZUKI, Ikuo; YAMAMOTO, Masahito; FURUKAWA, Masashi, 全国大会講演論文集, 72, 1, 1-269, 1-270, 08 Mar. 2010
  情報処理学会創立50周年記念 (アルゴリズム,一般セッション,ソフトウェア科学・工学) 6A-4, 一般社団法人情報処理学会, Japanese
• The synergistic network growth model in consideration of node characteristic and community information
  三好栄次; 鈴木育男; 山本雅人; 古川正志, 情報処理学会研究報告(CD-ROM), 2010, 3, 2010
• 2P1-G06 Generating a Behavior of a Virtual Creature with Central Pattern Generator
  IWADATE Kenji; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2010, "2P1, G06(1)"-"2P1-G06(2)", 2010
  In this study, we aim to evolving autonomous virtual creatures which have complex shapes in a complex environment. We implement a basic physics law and fluid influences with a virtual environment and evolve virtual creature in various environments. We adopt central pattern generator as controller of the virtual creature. Each model obtains an effective moving behavior in physical environment., The Japan Society of Mechanical Engineers, Japanese
• Recognition of breathing route during snoring for simple monitoring of Sleep Apnea
  Tsuyoshi Mikami; Yohichiro Kojima; Masahito Yamamoto; Masahi Furukawa, Proceedings of the SICE Annual Conference, 3433, 3434, 2010, [Peer-reviewed]
• GHSOMのパラメータ設定による計算時間の比較
  竹内 尚; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 66, 67, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• ノードランキング手法の組み合わせによる人間が直感で付けたノードランキングの再現と考察
  本庄 将也; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 162, 165, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 木構造による仮想生物の形態のGenoType表現の提案
  萬谷 和之; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 250, 251, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 局所エネルギー最小化による可視化の高速化
  茂尾 亮太; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 60, 65, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 仮想物理環境における弾性体を用いた魚モデルの行動獲得に関する基礎研究
  福本 晃宏; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 248, 249, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 分散型LCOによる大規模TSPの解法
  石川 和典; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 221, 222, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 個人や話題の特性を考慮した情報伝播モデルの提案
  千葉 隆雄; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 135, 142, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 木構造モデルにおける結合振動子を用いた情報伝搬および同期現象の解析
  小笠原 寛弥; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 45, 46, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 複雑ネットワークにおけるパーコレーション伝播を考慮した振動子の同期現象
  岩根 慎司; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 41, 44, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• コミュニティ構造を用いたネットワーク成長モデル
  三好 栄次; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 37, 40, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• TSPにおけるLCOとメタヒューリスティックスの組み合わせ
  市瀬 光生; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム講演論文集, 2009, 219, 220, 03 Oct. 2009
  情報処理学会北海道支部, Japanese
• 局所クラスタリング組織化法による2次割り当て問題への適用
  猿島 悠輔; 鈴木 育男; 山本 雅人; 古川 正志, 精密工学会北海道支部50周年記念学術講演会講演論文集, 37, 38, 05 Sep. 2009
  精密工学会北海道支部, Japanese
• 近似流体環境下でのヘリコプターの挙動
  大江 亮介; 鈴木 育男; 山本 雅人; 古川 正志, 精密工学会北海道支部50周年記念学術講演会講演論文集, 25, 26, 05 Sep. 2009
  精密工学会北海道支部, Japanese
• Fast visualization of the complex network by use of local elastic energy minimization
  SHIGEO Ryota; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 研究報告数理モデル化と問題解決（MPS）, 2009, 7, 1, 6, 03 Sep. 2009
  データ関係をノードとエッジで表すネットワーク構造は多くの分野で共通に利用されている．ネットワークの可視化技術は単なるノード間のつながりからは発見できないネットワークの構造や特徴を見出すのに有用な技術である．従来の研究で様々な可視化手法が提案されてきたが，本研究では力学的手法に焦点を当てる．力学的手法は実装と拡張が容易な最も一般的な可視化手法であるが，可視化のための計算量が大きく大規模なネットワークには適用することができない．しかし，比較的小規模なネットワークに対してはネットワークの特徴を捉え高速に可視化が可能である．提案手法では可視化対象のネットワークのある範囲内のノード群に対し，局所的エネルギー最小化によるノード配置をランダムに繰り返し行うことにより，ネットワーク全体の大域的なノード配置を導出する．これにより，計算量を削減し高速化に可視化を行う．また，従来手法との比較を行い提案手法の有用性を検証した．It becomes to make use of the network structure for representing many kind of relationship in many fields, where a set of entities and relationship among entities are described by a set of nodes and a set of links. Visualizing the network is a useful method to find and comprehend the network structure and its characteristic intuitively. this study focuses on a force-directed method, which is one of the most general methods. However, the computation time for visualization using this method becomes extremely large, as a size of networks grows larger. We propose a fast visualization method, which based on repeating local elastic energy minimization for randomly selected sub-networks. Numerical experiments verifies that the proposed method is capable of visualizing network fast with low computation time in comparing to conventional force-directed methods., 一般社団法人情報処理学会, Japanese
• The network growth model that considered community information
  MIYOSHI EIJI; SUZUKI IKUO; YAMAMOTO MASAHITO; FURUKAWA MASASHI, 研究報告数理モデル化と問題解決（MPS）, 2009, 8, 1, 6, 03 Sep. 2009
  多くのネットワークモデルの研究が存在しているが，その多くはネットワークの構成要素であるノードの状態のみによりネットワークが成長する．しかし，実際のネットワーク成長はコミュニティによる影響も受ける．本研究では，既存のネットワーク成長モデルに対し，局所コミュニティ抽出方法を適用し，ネットワークの成長のルールにコミュニティ情報を付加した成長モデルの提案を行う．また，提案手法を適用したネットワーク生成によるコミュニティ構造の変化とともに，コミュニティ数の増減，クラスタリング系数などへの特徴量について時間経過による変化を観測し，ネットワークの成長過程について CNN モデルと提案モデルの比較を行う．There is a study of much network model, but, as for the most, a network grows up only by the state of the node that is the component of the network. However, the real network growth takes the influence by the community. In this study, We suggest the growth model that added community information to a rule of the growth of the network. In addition, with a change of the community structure by the network generation that applied suggestion technique. We observe a change by the progress about quantity of characteristic to numbers of increase and decrease of the number of the community, clustering origin in time, and we compare the suggestion model with CNN model about the growth process of the network., 一般社団法人情報処理学会, Japanese
• A study on interrupt scheduling of a logistic center : Re-active scheduling by the reinforcement learning
  Takahashi, Makiko; Watanabe, Michiko; Suzuki, Ikuo; Yamamoto, Masahito; Furukawa, Masashi, Proceedings of JSPE Semestrial Meeting, 2009, 997, 998, 25 Aug. 2009
  We have proposed a new scheduling method on the order-picking problem in a logistic center based on 'local clustering organization (LCO)'.Moreover, we have proposed a re-scheduling method how the urgent interrupt orders are turned based on LCO.This study focuses on re-active scheduling by reinforcement learning.We propose a re-active scheduling method how the urgent interrupt orders are turned based on LCO and reinforcement learning.Moreover, we prove the effectiveness of the proposed method., The Japan Society for Precision Engineering, Japanese
• A study on animated robot : Acquisition of flying behavior by minimizing energy cost
  Morinaga, Makoto; Suzuki, Ikuo; Yamamoto, Masahito; Furukawa, Masashi, Proceedings of JSPE Semestrial Meeting, 2009, 991, 992, 25 Aug. 2009
  This study aims at an acquisition of flying behavior of an object by minimizing energy cost used for flying under the virtual air environment that is modeled the drag and the buoyancy. The designed model is created by several wings, and controlled by artificial neural network. Simulations by these models are carried out by evolving the proper behaviors using genetic algorithm. Simulation results verify that these models can acquire several flying behaviors under the virtual air environment., The Japan Society for Precision Engineering, Japanese
• Study on adaptive behavior and its behavioral analysis for virtual modular robot
  米陀 佳祐; 鈴木 育男; 山本 雅人; 古川 正志, 精密工学会秋季大会学術講演会講演論文集, 2009, 1007, 1008, 25 Aug. 2009
  There are many studies on hardware and software experiments to control a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of it is that the modular robot behavior is obtained by an each module movement based on local communications between linked modules. This study focuses on a computer simulation obeying physics laws for a virtual modular robot. This simulation aims at achieving given tasks autonomously for it in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to analyze and evaluate their behavior., 精密工学会, Japanese
• 325 A Study on Animated Robot : Acquisition of Swimming Behavior on Artificial Creature
  NAKAMURA Keita; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "325, 1"-"325-6", 03 Aug. 2009
  In this study, we model the under-water environmental influence based on the physics modeling. And we propose a simulation method for artificial creature swimming in consideration of buoyancy and water drags as a virtual water environment. As a result of simulation, we verify that it is possible for articial creature to acquire the swimming behavior in the under-water environment. Additionally we analyze of the acquired swimming behavior., The Japan Society of Mechanical Engineers, Japanese
• 327 Evolving a behavior of artificial creatures in plural environments
  IWADATE Kenji; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "327, 1"-"327-4", 03 Aug. 2009
  In this study, we aim to evolving autonomous virtual creatures which have complex shapes in a complex environment. We implement a basic physics law and fluid influences with a virtual environment and evolve artificial creatures in plural environments (on the ground, in the water). Each model, which is evolved in a different environment, obtains an effective moving behavior in each environment (looks like walking, and swimming)., The Japan Society of Mechanical Engineers, Japanese
• 324 Acquisition of Stable Flying Behavior under the Virtual Air Environment
  Morinaga Makoto; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "324, 1"-"324-4", 03 Aug. 2009
  This study aims at an acquisition of the stable flying under the virtual air environment that models the drag and the buoyancy.The designed model is inspired by existing creatures with several wings, and controlled by the artificial neural network.Simulations by these models are carried out to evolve the proper behaviors by genetic algorithm.Simulation results verify that these models can fly stably by using wingstroke and gliding under the virtual air environment., The Japan Society of Mechanical Engineers, Japanese
• 326 Can da Vinci Helicopter fly?
  OOE Ryosuke; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Dynamics & Design Conference, 2009, "326, 1"-"326-6", 03 Aug. 2009
  We have proposed a fluid repulsion computation method as an environment field force to simulate the object motion in fluid. It is capable of simulating fast, real-time and dynamic object motion in the fluid. This study verifies that the proposed method is more applicable for simulating the object motion in many situations in the fluid. We especially focus on a simple helicopter equipped with a circular wing. Numerical experiments show the followings; (1) the helicopter flight can be controlled by Artificial neural network, (2) fluid repulsion force can be figured out by uniformly dividing the wing area, (3) it is possible to compute the fluid repulsion force by the fewer number of dividing wing area, and (4) we find a better wing shape of da Vinci helicopter by analyzing da Vinci's helicopter in simulation and making a model of da Vinci's helicopter in the real world., The Japan Society of Mechanical Engineers, Japanese
• 323 A Study on Anibots' Modeling for Mob Behavior
  KAWAKAMI Akira; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "323, 1"-"323-4", 03 Aug. 2009
  Anibot (animated robot) is a software robot with sensors, actuators, and controllers under physical laws environment. We have developed the modeling tool allowing us to model it and simulate its behavior. This study examined acquisition of mob behavior for Anibot by two numerical experiments. The first experiment is acquisition of the circumambiency action of the light source by the several car type robots. The second experiment is to acquire the burden action of the two load-carrying robots., The Japan Society of Mechanical Engineers, Japanese
• 242 The influence that a change of the network structure gives the behavior of the oscillators
  IWANE Shinji; SUZUKI Ikuo; YAMAMOTO Masahito; HURUKAWA Masashi, Dynamics & Design Conference, 2009, "242, 1"-"242-4", 03 Aug. 2009
  This paper investigates a synchronizing phenomenon of oscillators, coupled together in the form of the evolving complex network. The percolation theory is introduced to represent the evolving complex network, where nodes and links correspond to the oscillators and signal transfer relation respectively. Numerical experiments show that the synchronization phenomena depend on the structures of the evolving complex networks., The Japan Society of Mechanical Engineers, Japanese
• 317 Swing-up control of multi-link inverted pendulum system by use of physical modeling
  SHIRAISHI Naoki; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "317, 1"-"317-4", 03 Aug. 2009
  We propose the control method with the artificial neural network (ANN). The synaptic weights of ANN are explored with the genetic algorithm, which is one of the evolutionary computing methods. In this paper, we perform the swing-up control experiments of the single inverted pendulum in the virtual space by the physical law. As the result, we verified that our proposed method is possible to acquire the optimal controller for the single inverted pendulum to a limited moving range., The Japan Society of Mechanical Engineers, Japanese
• 319 A Study on Animated Robot : Crawling of multi-legged artificial creature
  OJIRI Kazuya; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Dynamics & Design Conference, 2009, "319, 1"-"319-5", 03 Aug. 2009
  This study attempts to acquire autonomous behaviors on an artificial creature with multi-legs. We adopted physics modeling to represent the artificial creature in a virtual environment governed by the physics low. The model is equipped with actuator, controller, and self-evolution mechanism. Simulation results show the creature successfully acquires harmonious walking. And the experiment succeeded in the acquisition of the walk toward the light source. Furthermore, we discuss the obtained behaviors by comparing with the difference body segment number or control law., The Japan Society of Mechanical Engineers, Japanese
• 2A2-C18 Can da Vinci Helicopter fly?
  OOE Ryosuke; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2009, "2A2, C18(1)"-"2A2-C18(4)", 25 May 2009
  This paper proposes an approximate fluid environment that enables, fast, real-time and dynamic simulations. It calculates drag on the basis of a flat board in a uniform flow. Drag and motions are processed by physical engine PhysX. To verify the effect of this environment, we analyze a simple helicopter's motion. We examine that this helicopter acquires the motion to satisfy a given purpose. For control and study of helicopter, we use an artificial neural network and particle swarm optimization. Moreover, we analyze the helicopter based on Leonardo da Vinci's sketch under this environment. The result of analysis leads us to improve a shape of wing in Leonardo's sketch. To show a capacity for flight of the improved shape of wing, we experiment helicopter flight in the real environment., The Japan Society of Mechanical Engineers, Japanese
• 2A2-D12 Swing-up control of multi-link inverted pendulum system by use of physical modeling
  SHIRAISHI Naoki; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2009, "2A2, D12(1)"-"2A2-D12(4)", 25 May 2009
  We propose the control method with the artificial neural network (ANN). The synaptic weights of ANN are explored with the genetic algorithm, which is one of the evolutionary computing methods. In this paper, we perform the swing-up control experiments of the single inverted pendulum in the virtual space by the physical law. As the result, we verified that our proposed method is possible to acquire the optimal controller for the single inverted pendulum to a limited moving range., The Japan Society of Mechanical Engineers, Japanese
• 2A2-D09 A Study on Animated Robot : Acquisition of Swimming Behavior on Artificial Creature
  NAKAMURA Keita; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2009, "2A2, D09(1)"-"2A2-D09(4)", 25 May 2009
  This study, proposes an acquisition method on artificial creature swimming. The method takes consideration in buoyancy and water drags as a virtual water environment based on the physics modeling. Additionally acquired swimming behaviors are analyzed in detail., The Japan Society of Mechanical Engineers, Japanese
• Study on Animated Robot-Evolving a behavior of artificial creatures in plural environments-
  岩館健司; 米陀佳祐; 鈴木育男; 山本雅人; 古川正志, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM), 2009, ROMBUNNO.2A2-D08, _2A2-D08_3, 24 May 2009
  In this study, we aim to evolving behavior of virtual creatures on complex environment. We implement a basic physics law and fluid influences to virtual environment and evolve artificial creatures in plural environments (on the ground, in the water). Each model which is evolved on different environment obtains an effective behavior for moves on each environment (looks like walking, and swimming)., The Japan Society of Mechanical Engineers, Japanese
• Study on Adaptive Behavior and Motion Mechanism for a Virtual Modular Robot
  米陀佳祐; 鈴木育男; 山本雅人; 古川正志, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM), 2009, ROMBUNNO.2A2-E04, _2A2-E04_4, 24 May 2009
  There are many studies on hardware and software experiments about controlling a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of them is that the modular robot behavior is obtained by an each module movement based on local communications between linked modules. This study focuses on a computer simulation obeying physics laws for a virtual modular robot. This simulation aims at achieving given tasks autonomously for it in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to analyze and evaluate their behavior., The Japan Society of Mechanical Engineers, Japanese
• A Study of A Information Propagation Model Related with Topic and Person Characteristics
  CHIBA Takao; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 全国大会講演論文集, 71, 1, 247, 248, 10 Mar. 2009
  情報処理学会第71回全国大会 数理モデル化と問題解決,一般セッション,ソフトウェア科学・工学 2B-5, 一般社団法人情報処理学会, Japanese
• Research on growth and construction of complex network using with Modularity
  MIYOSHI Eiji; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 全国大会講演論文集, 71, ソフトウェア科学・工学, 255, 256, 10 Mar. 2009
  情報処理学会第71回全国大会(アルゴリズムとその応用,一般セッション,ソフトウェア科学・工学) 3B-2, 一般社団法人情報処理学会, Japanese
• Action acquisition of multi-legged artificial creature on the basis of physics modeling
  Ojiri Kazuya; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009, 557, 558, 25 Feb. 2009
  This study attempts to acquire autonomous behaviors on an artificial creature with multi-legs. We adopted physics modeling to represent the artificial creature in a virtual environment governed by the physics low. The model is equipped with actuator, controller, and self-evolution mechanism. Simulation results show the creature successfully acquires harmonious walking. Furthermore, we discuss the obtained behaviors by comparing with a real multi-legged organism., The Japan Society for Precision Engineering, Japanese
• A study on animated robot : Acquisition of stable flying behavior
  Morinaga Makoto; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009, 555, 556, 25 Feb. 2009
  This study aims at an acquisition of the stable flying under the virtual air environment that models the drag and the buoyancy.The designed model is inspired by existing creatures with several wings, and controlled by artificial neural network.Simulations by these models are carried out to evolve the proper behaviors by genetic algorithm.Simulation results verify that these models can fly stably by using wingstroke and gliding under the virtual air environment., The Japan Society for Precision Engineering, Japanese
• A Study on Visualization of Complex Networks Using DSSOM
  岩田泰士; 鈴木育男; 山本雅人; 古川正志, 情報処理学会論文誌ジャーナル(CD-ROM), 50, 11, 2009
• ネットワーク構造の局所最適化による可視化の高速化
  茂尾亮太; 鈴木育男; 山本雅人; 古川正志, インテリジェント・システム・シンポジウム講演論文集, 19th, CD-ROM, 2009
• The network growth model that considered community information
  三好栄次; 鈴木育男; 山本雅人; 古川正志, 情報処理学会研究報告(CD-ROM), 2009, 3, 2009
• Fast visualization of the complex network by use of local elastic energy minimization
  茂尾亮太; 鈴木育男; 山本雅人; 古川正志, 情報処理学会研究報告(CD-ROM), 2009, 3, 2009
• A New Solution for Vehicle Routing Problem Using Local Clustering Organization
  坂本延寛; 鈴木育男; 渡辺美知子; 山本雅人; 古川正志, 情報処理学会研究報告(CD-ROM), 2009, 3, 2009
• A study on re-scheduling of order-picking turned by urgent interrupt orders
  Takahashi Makiko; Suzuki Ikuo; Yamamoto Masahito; Watanabe Michiko; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009S, 541, 542, 2009
  We have proposed a new scheduling method on the order-picking problem in a logistic center based on local clustering organization (LCO). The purpose of the scheduling is to determine an efficient delivery plan for ordered products. This study focuses on the re-scheduling when urgent interrupt orders are requested. We propose a re-scheduling method how the urgent interrupt orders are assigned based on LCO as well. Moreover, the influence by urgent interrupt is examined by simulation experiments, and we prove the effectiveness of the proposed method., The Japan Society for Precision Engineering
• Applying Local Clustering Optimization to Vehicle Routing Problem and its Verification by Numerical Experiments
  Sakamoto Nobuhiro; Suzuki Ikuo; Yamamoto Masahito; Watanabe Michiko; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009S, 539, 540, 2009
  In many situations, there arise a Vehicle Routing Problem (VRP), which explores the optimum routes for m-vehicles under some criteria and constraints. This study proposes how to apply ″Local Clustering Organization″ (LCO) to VRP. It is proved that LCO brings a good solution by comparing it with other solution methods in numerical experiments., The Japan Society for Precision Engineering
• Evolving amphibian behavior on complex environment
  Iwadate Kenji; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009A, 995, 996, 2009
  In this study, we aim to evolving behavior of virtual creatures on complex environment. We implement a basic physics law and fluid influences to virtual environment and evolve artificial creatures in plural environments (on the ground, in the water). Each model which is evolved on different environment obtains an effective behavior for moves on each environment (looks like walking, and swimming)., The Japan Society for Precision Engineering
• 318 Acquisition of Adaptive Behavior for Virtual Modular Robot Using Evolutionary Computation
  YONEDA Keisuke; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of the Dynamics & Design Conference, 2009, _318-1_, _318-6_, 2009
  There are many studies on hardware and software experiments to control a modular robot. The modular robot consists of homogeneous or heterogeneous simple modules. A feature of it is that the modular robot behavior is obtained by an each module movement based on local communications between linked modules. This study focuses on a computer simulation obeying physics laws for a virtual modular robot. This simulation aims at achieving given tasks autonomously for it in specific circumstances. Our goal is to acquire a control system in evolution for the virtual modular robot and to analyze and evaluate their behavior., The Japan Society of Mechanical Engineers, Japanese
• A Study on Animated Robot: Underwater Behavior of Virtual Creatures
  Nakamura Keita; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2009S, 559, 560, 2009
  We have presented the physics modeling of the swimming control of the virtual creatures in the virtual underwater environment with the buoyancy and the drag for the acquiring the reasonable behaviors visually. In this study, we try to evolve the morphologies of the virtual creatures in order to swim faster or more flexible. Simulation results show that appropriate behaviors can be obtained by our proposed method., The Japan Society for Precision Engineering
• Effects of the Generation Method of Scale-free Networks and Their Power-law Exponents on the Synchronization of Coupled Oscillator Networks
  MURATA Kenta; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, Journal of Japan Society for Fuzzy Theory and Intelligent Informatics, 21, 2, 265, 276, 2009
  We examine effects of the generation method of scale-free networks with a small clustering coefficient and their power-law exponents on the synchronization of coupled oscillator networks. A modified Kuramoto model is introduced as a model of coupled oscillator networks. Networks employed for examinations are generated by a preferential attachment and configuration model. Under these conditions, the relationship between the coherence R and the power-law exponent γ_T is investigated by numerical computation. In addition, the relationship between the R and the coupling strength σ is also investigated. As a result, it is found that (1) the global phase synchronization occurs in the large number σ independent of network generation methods and γ_T, (2) R gradually decreases as γ_T increases under the global phase synchronization, (3) the coherence R depends on network topologies in the range of 2 < σ < 7, where γ_T, which strongly affects the coherence too, increases as σ increases, and (4) the relaxation time of coherence depends on network topologies as well as R in the range 2 < σ < 7., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• 仮想水中環境における人工生物の遊泳獲得
  中村 啓太; 鈴木 育男; 山本 雅人; 古川 正志, 第10回AI若手の集い MYCOM2009, 27, 30, 2009
  本研究では，人工生物が水中生物に見られる遊泳を獲得することを目的とし，水の影響力である浮力，抗力をモデル化した仮想水中環境を構築を行う．更に，構築した環境下で，物理モデリングに基づく遊泳獲得シミュレーション方法を提案し，人工生物の遊泳獲得を行い，獲得した遊泳挙動を解析した．, AI若手の集い, Japanese
• Comparison and evaluation of Network Visualization based on Self-Organization
  IWATA, Yasushi; SUZUKI, Ikuo; YAMAMOTO, Masahito; FURUKAWA, Masashi, 情報処理学会全国大会講演論文集, 71st, 1, 259, 260, 2009
  情報処理学会第７１回全国大会 (アルゴリズムとその応用,一般セッション,ソフトウェア科学・工学) 3B-4, 情報処理学会, Japanese
• コミュニティ構造の視認性を高めるネットワーク可視化手法に関する一考察
  岩田 泰士; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム2008講演論文集, B, 5, 19 Sep. 2008
  情報処理学会北海道支部, Japanese
• 情報伝播モデルによる情報伝播パターンの研究
  千葉 隆雄; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム2008講演論文集, B, 2, 19 Sep. 2008
  情報処理学会北海道支部, Japanese
• 複雑ネットワークのパーコレーションによる同期現象
  岩根 慎司; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム2008講演論文集, B, 3, 19 Sep. 2008
  情報処理学会北海道支部, Japanese
• コミュニティ分割されたコミュニティの特性解析
  三好 栄次; 鈴木 育男; 山本 雅人; 古川 正志, 情報処理北海道シンポジウム2008講演論文集, B, 4, 19 Sep. 2008
  情報処理学会北海道支部, Japanese
• 2-S-5 観光情報学会誌にみる国内研究動向(観光とOR(1))
  山本 雅人; 鈴木 育男; 古川 正志, 日本オペレーションズ・リサーチ学会秋季研究発表会アブストラクト集, 2008, 132, 133, 10 Sep. 2008
  公益社団法人日本オペレーションズ・リサーチ学会, Japanese
• 局所クラスタリング組織化法によるn-TSPの解法
  坂本 延寛; 鈴木 育男; 山本 雅人; 古川 正志; 渡辺 美知子, 2008年度精密工学会北海道支部学術講演会講演論文集, 2008, 35, 36, 06 Sep. 2008
  精密工学会北海道支部, Japanese
• 物理モデリングにおける直列多リンク倒立振子の制御
  白石 直樹; 鈴木 育男; 山本 雅人; 古川 正志, 2008年度精密工学会北海道支部学術講演会講演論文集, 2008, 7, 8, 06 Sep. 2008
  精密工学会北海道支部, Japanese
• 物理モデリングによる紙飛行機のボイドの研究
  徐 拓; 鈴木 育男; 山本 雅人; 古川 正志, 2008年度精密工学会北海道支部学術講演会講演論文集, 2008, 5, 6, 06 Sep. 2008
  精密工学会北海道支部, Japanese
• エネルギー基準によるオーダーピッキングの最適バッチングの作成
  高橋 麻希子; 鈴木 育男; 山本 雅人; 古川 正志; 渡辺 美知子, 2008年度精密工学会北海道支部学術講演会講演論文集, 2008, 33, 34, 06 Sep. 2008
  精密工学会北海道支部, Japanese
• アニボットのコピー機能によるモデリングと強調行動の獲得
  川上 祥; 鈴木 育男; 山本 雅人; 古川 正志, 2008年度精密工学会北海道支部学術講演会講演論文集, 2008, 31, 32, 06 Sep. 2008
  精密工学会北海道支部, Japanese
• A study on animated robot : Acquisition of the flying behavior
  Morinaga, Makoto; Suzuki, Ikuo; Yamamoto, Masahito; Furukawa, Masashi, Proceedings of JSPE Semestrial Meeting, 2008, 883, 884, 01 Sep. 2008
  本研究では，抗力，浮力をモデル化した仮想空気環境上で飛翔行動を獲得可能な物体モデルの構築を提案する．物体モデルとしては，様々なタイプの羽をモデル化し，簡単な形状の物体モデルを作成した．そして，物体モデルの羽の挙動をニューラルネットワークで制御し，遺伝的アルゴリズムを用いて，シミュレーションを実施した．これらの結果，仮想空気環境上で，物体モデルが飛翔行動を獲得可能であることを検証した．, The Japan Society for Precision Engineering, Japanese
• A study on animated robot : Acquisition of the underwater behavior control
  Nakamura Keita; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2008, 881, 882, 01 Sep. 2008
  現在，人工生物の挙動を生成，獲得するための研究が多く実施されている．これらの挙動には，環境が大きな影響を寄与する．そこで，本研究では，視覚的にリアルな挙動の獲得を目的とし，水中環境の影響を正確にモデル化し，その環境内で，流水中の運動モデルの姿勢制御，遊泳制御の物理モデリングに基づくシミュレーション方法を提案する．これらの結果，モデル化した環境内でいくつかの挙動制御が獲得されたことを報告する．, The Japan Society for Precision Engineering, Japanese
• Animated Robotの研究―軟性構造モデルの行動制御―
  米陀佳祐; 岩館健司; 鈴木育男; 山本雅人; 古川正志, 精密工学会大会学術講演会講演論文集, 2008, ROMBUNNO.K45, 886, 01 Sep. 2008
  これ迄に，物理法則に基づく仮想空間で振る舞う仮想自律ロボットとしてAnibot (Animated Robot)を提案した．このAnibotは，特定の環境下で与えられたタスクの自律的な達成を目的としており，自身が振る舞うための制御システムを学習から獲得する．本研究では，柔軟な形態を有するソフトロボットとして軟性構造モデルを与え，柔軟な動作が要求される複雑なタスクを達成するための学習問題を報告する．, The Japan Society for Precision Engineering, Japanese
• Animated Robotの研究―複合環境における行動獲得―
  岩館健司; 米陀佳祐; 鈴木育男; 山本雅人; 古川正志, 精密工学会大会学術講演会講演論文集, 2008, ROMBUNNO.K47, 888, 01 Sep. 2008
  三次元ＣＧアニメーション技術は映画産業をはじめとする様々な分野で必要不可欠となっている．しかし，このアニメーション生成には莫大な労力と時間が必要となる．本研究では，水中，陸上，空気を含めた複合的な仮想物理環境を構築し，この環境内にセンサ，アクチュエータ，ニューラルコントローラを持ち合わせた仮想の物理モデルを配置し，環境の推移に従って異なる行動を自律的に創発させることでアニメーションを自動生成する．, 精密工学会, Japanese
• An analysis of preference information between different categories using network model
  山下 翔; 鈴木 育男; 山本 雅人; 古川 正志, 情報科学技術フォーラム講演論文集, 7, 2, 443, 444, 20 Aug. 2008
  第7回情報科学技術フォーラム FIT2008 (人工知能・ゲーム,一般論文) F-054, Forum on Information Technology, Japanese
• Comparing Clustering Algorithms in Bipartite Networks
  HARADA Keiu; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 情報科学技術フォーラム講演論文集, 7, 2, 441, 442, 20 Aug. 2008
  第7回情報科学技術フォーラム FIT2008 (人工知能・ゲーム,一般論文) F-053, Forum on Information Technology, Japanese
• Time Series Analysis of Network Based on Network Small-worldness Quantification
  Morioka Jun; Furukawa Masashi; Yamamoto Masahito; Suzuki Ikuo, 情報科学技術フォーラム講演論文集, 7, 2, 447, 448, 20 Aug. 2008
  第7回情報科学技術フォーラム FIT2008(人工知能・ゲーム,一般論文)F-056, Forum on Information Technology, Japanese
• 2P2-G22 Emergence of school movement on different characteristics of complex network
  Kawada Shin; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2008, "2P2, G22(1)"-"2P2-G22(4)", 06 Jun. 2008
  This study focuses on emergence of heterogeneous personal characteristics in a society. Such characteristics can be observed in not only human but also many organism, and deeply effect on personal making-decision and action. This paper treats with a swarm-agent model in order to examine how and what heterogeneous personal characteristics become diversified. A pursuit problem is set for the swarm-agent to efficiently capture a run-away object in cooperation. First, numerical simulations which the number of agents is changed, we observed that agents' characteristics become diversified. Next, complex network is adopted for the swarm-agent communication and we observed swarm-agents' behavior., The Japan Society of Mechanical Engineers, Japanese
• 2P2-G15 Study of Animated Robot : Modeling Water Environment for Physics Modeling
  Nakamura Keita; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, ロボティクス・メカトロニクス講演会講演概要集, 2008, "2P2, G15(1)"-"2P2-G15(4)", 06 Jun. 2008
  This study, I accurately modeled underwater environmental influence and am aimed for modeling of the behavior of the object in the environment. As a result of these modeling, I report that it is possible that the behavior simulation of the object in the underwater environment., The Japan Society of Mechanical Engineers, Japanese
• 2P2-G17 A Study on Animated Robot : Installment of Air Atmosphere Environment in Physics Modeling
  MORINAGA Makoto; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2008, "2P2, G17(1)"-"2P2-G17(4)", 06 Jun. 2008
  This study aims at acquirements of an object (animated robot) motion under the air environment based on physics modeling. We introduce several resistance forces of the air into physics modeling as the air environment. Simulations on falling objects and gliding one in the air verify that their movement reflects with the realistic world phenomenon in the air., The Japan Society of Mechanical Engineers, Japanese
• A study on Animated Robot-Learning and Controlling for Rigid Objects-
  岩館健司; 米陀佳祐; 鈴木郁男; 山本雅人; 古川正志, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM), 2008, ROMBUNNO.2P2-G21, _2P2-G21_4, 05 Jun. 2008
  In the 3D-CG animation, many creators waste their time on creating the motion of object. Therefore, we develop a new modeling software for rigid objects. This software has the automatic modeling function based on the lows of physics. This paper describes the structure of modeling software, and shows examples of creating motions., The Japan Society of Mechanical Engineers, Japanese
• A study on Animated Robot-Learning and Controlling for Elastic Obects-
  米陀佳祐; 岩館健司; 鈴木育男; 山本雅人; 古川正志, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM), 2008, ROMBUNNO.2P2-G19, 05 Jun. 2008
  Japanese
• Capacity Analysis of DNA Memory Based on Mathematical Model
  YAMAMOTO MASAHITO; KASHIWAMURA SATOSHI; OHUCHI AZUMA, 情報処理学会論文誌数理モデル化と応用（TOM）, 49, 4, 36, 44, 15 Mar. 2008, [Peer-reviewed]
  We have developed a DNA Memory called NPMM with over 10 million (16.8M) addresses. The data embedded into a unique address was correctly extracted through addressing processes based on the nested PCR. In this paper, the addressing process of NPMM was modeled by using the combinatorial optimization problem in order to discuss the limitation of the scaling-up problem of NPMM., Information Processing Society of Japan (IPSJ), Japanese
• Evolving Network Model for Reputation Propagation
  CHIBA Takao; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 全国大会講演論文集, 70, ソフトウェア科学・工学, 217, 218, 13 Mar. 2008
  情報処理学会, Japanese
• An analysis of preference informations between different categories
  YAMASHITA Sho; SUZUKI Ikuo; YAMAMOTO Masahito; FURUKAWA Masashi, 全国大会講演論文集, 70, データベースとメディア, 429, 430, 13 Mar. 2008
  情報処理学会, Japanese
• Animated Robotの研究―モデリングツールの開発(II)―
  米陀佳祐; 岩舘健司; 柴田勝也; 鈴木育男; 山本雅人; 古川正志, 精密工学会大会学術講演会講演論文集, 2008, L09, 990, 03 Mar. 2008
  This study proposes Anibot (Animated Robot), which can behave autonomously in the virtual environment. A difference between Anibot and a conventional animation is that Anibot behavior follows a physical law. This report focuses on modeling tools newly developed to create Anibot, especially as an elastic structure model. Some simulation results verify the developed tools are capable of modeling the elastic model of Anibot., The Japan Society for Precision Engineering, Japanese
• Animated Robotの研究―モデリングツールの開発(I)―
  岩館健司; 米陀佳祐; 柴田勝也; 鈴木育男; 山本雅人; 古川正志, 精密工学会大会学術講演会講演論文集, 2008, L08, 988, 03 Mar. 2008
  In the 3D-CG animation, many creators waste their time on creating the motion of object. Therefore, we develop a new modeling software for rigid objects. This software has the automatic modeling function based on the lows of physics. This paper describes the structure of modeling software, database and the method of creating motion., The Japan Society for Precision Engineering, Japanese
• Basic study of hot topics detection on social bookmark services
  大和田純; 鈴木育男; 山本雅人; 古川正志, 人工知能学会知識ベースシステム研究会資料, 80, 37, 41, 15 Jan. 2008
  人工知能学会, Japanese
• The character extraction of tag co-occurring networks on Nicovideo
  伊藤聖修; 鈴木育男; 山本雅人; 古川正志, 人工知能学会知識ベースシステム研究会資料, 80, 13, 18, 15 Jan. 2008
  人工知能学会, Japanese
• A relationship between the synchronization and the vertex degree on the coupled oscillator system on complex networks
  村田賢太; 鈴木育男; 山本雅人; 古川正志, 人工知能学会知識ベースシステム研究会資料, 80, 27, 32, 15 Jan. 2008
  人工知能学会, Japanese
• Development of Picking Navigation System for a Large Size of Logistic Center
  Miyawaki Eri; Furukawa Masashi; Yamamoto Masahito; Suzuki Ikuo; Watanabe Michiko, Proceedings of JSPE Semestrial Meeting, 2008S, 1007, 1008, 2008
  This study aims at developing a navigation system for a large size of logistic center. We have reported that it was effective for picking navigation to formulate it as TSP and to adopt LCT as a solution of TSP. This paper verifies our proposed method to be applicable to a real large size navigation system through simulation., The Japan Society for Precision Engineering
• Modeling Water Environment and Object Behaviors Based on Physic Law
  Nakamura Keita; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2008S, 1001, 1002, 2008
  The environment greatly influences acquirement of the behavior of an artificial life creature and artifact object. However, the conventional studies have not accurately considered in a model environmental influence. Instead, these influences are analyzed by replacing them into a simple approximation model. This study focuses on the modeling water environmental influence precisely. As a basic research, the water environment is modeled and constructed by taking account in gravity, buoyancy and a water viscosity. Physics engine is employed for a calculation of an object behavior in the water. Simulation results show that the obtained object movement is quite similar to a realistic world one., The Japan Society for Precision Engineering
• Modeling Air Environment and Object Behaviors Based on Physic Law
  Morinaga Makoto; Suzuki Ikuo; Yamamoto Masahito; Furukawa Masashi, Proceedings of JSPE Semestrial Meeting, 2008S, 1003, 1004, 2008
  This study aims at an establishment of air environment modeling, which makes it possible to simulate objects movement in an air. To do so, air viscosity, resistance and moment are prepared and incorporated as modeling functions into the modeling environment. The object behavior in the air is figured out by adopting an open source physics engine. Simulation on a falling object and floating one in the air verified that their movement reflects with realistic world phenomenon., The Japan Society for Precision Engineering
• Autonomous indoor blimp robot motion design based on state value
  高谷 敏彦; 川村 秀憲; 山本 雅人, Ricoh technical report, 34, 119, 130, 2008
  コレクション : 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他, リコーグループ技術開発本部, Japanese
• 3D Visualization of Network based on Self-Organization
  IWATA, Yasushi; SUZUKI, Ikuo; YAMAMOTO, Masahito; FURUKAWA, Masashi, 情報処理学会全国大会講演論文集, 70th, 1, 215, 216, 2008
  情報処理学会, Japanese
• Capacity Analysis of DNA Memory based on Mathematical Model
  YAMAMOTO Masahito; KASHIWAMURA Satoshi; OHUCHI Azuma, IPSJ SIG Notes, 2007, 86, 99, 102, 04 Sep. 2007
  We have developed a DNA Memory with over 10 million (16.8M) addresses. The data embedded into a unique address was correctly extracted through addressing processes based on the nested PCR. The limitation of the scaling-up of the proposed DNA memory is discussed by using a theoretical model based on combinatorial optimization with some experimental restrictions. The results reveal that the size of the address space of the DNA memory presented here may be close to the theoretical limit. The high-capacity DNA memory can be also used in cryptography (steganography) or DNA ink., Information Processing Society of Japan (IPSJ), Japanese
• LF-006 Quantitative Analysis of Cellular Automata with Input/Output Data
  Takahashi Haruki; Kawamura Hidenori; Yamamoto Masato; Ohuchi Azuma, 情報科学技術レターズ, 6, 157, 160, 22 Aug. 2007
  Forum on Information Technology, Japanese
• A-002 A Study on Alternative Tour Plans in Tour Planning Support System
  Maruyama Kana; Yamamoto Masahito; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 6, 1, 3, 6, 22 Aug. 2007
  Forum on Information Technology, Japanese
• F-007 HARMO : Information Sharing and Recommender System with Weblog based on Web Service
  Yamashita Akihiro; Kawamura Hidenori; Yamamoto Masahito; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 6, 2, 349, 352, 22 Aug. 2007
  Forum on Information Technology, Japanese
• 2A2-B02 Control for Indoor Blimp Robot Based on Flight Plan with Constraint Time
  KASAWAKI Hiroto; KAWAMURA Hidenori; YAMAMOTO Masahito; TAKAYA Toshihiko; OHUCHI Azuma, ロボティクス・メカトロニクス講演会講演概要集, 2007, "2A2, B02(1)"-"2A2-B02(4)", 11 May 2007
  This paper describes that an indoor balloon control system based on flight plan with constraint time. Indoor balloon robots have the features of using buoyancy to move three dimensional movements, moving less energy. Furthermore, balloon robot has high safety to crash, and can use it safely also in indoor space. For these features, indoor balloon robots have enormous potential for applications such as an entertainment flight, automatic surveillance. Our goal is synchronized flying. However, they have difficulties to control because of nonlinear thrust and air resistance. We develop of the control system based on flight plan with constraint time that balloon robot might be able to move freely 3D space with constraint time. The experimental results show that the control system based on flight plan with constraint time is effective and might be applied to the synchronized flying for indoor balloon robot., The Japan Society of Mechanical Engineers, Japanese
• 2A2-A08 Development of Line Following Control System for Indoor Blimp Robot
  NISHIOKA Ryouta; KAWAMURA Hidenori; YAMAMOTO Masahito; TAKAYA Toshihiko; OHUCHI Azuma, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2007, "2A2, A08(1)"-"2A2-A08(4)", 11 May 2007
  We report on line following control for indoor blimp robot. Indoor blimp robot can be moved to the altitude and the place with differences in the building. There are applications of the guide and the round in the building by using those features. It is generable target trajectory to put the one that becomes a landmark on the moved place. Therefore, we put the line as a landmark. The line is showing flat information in the target trajectory, and information of height can be obtained according to the width of the line. In this paper, we report the extraction method of the line in the camera image, and line following control., The Japan Society of Mechanical Engineers, Japanese
• Development of Restaurant Information Website with Weblog and Recommender System
  YAMASHITA Akihiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report, 106, 586, 75, 80, 15 Mar. 2007
  As the number of individual tourists increases, Web browsing is becoming one of the methods to gather tourism information such as restaurants and accommodations. However, it is difficult to search for necessary and valuable tourism information. Meanwhile, the services which are called Web2.0 dramatically increase. These features are information collection from users, information sharing and user adaptive recommendation. This information distribution form will extend increasingly, and the influence on the tourism industry will be significant. This research constructs user-centred tourism information system with objective information and subjective ratings. Then it innovates tourism website using Web2.0 technologies. This study proposes to use the Weblog interface for the system to collect much tourism information. Further, to recommend some products for users, it utilizes Collaborative Filtering Algorithm to resolve which products should be suggested. This paper introduces an application to a restaurant information website., The Institute of Electronics, Information and Communication Engineers, Japanese
• Development of Restaurant Information Website with Weblog and Recommender System
  YAMASHITA Akihiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 147, 26, 133, 138, 14 Mar. 2007
  As the number of individual tourists increases, Web browsing is becoming one of the methods to gather tourism information such as restaurants and accommodations. However, it is difficult to search for necessary and valuable tourism information. Meanwhile, the services which are called Web2.0 dramatically increase. These features are information collection from users, information sharing and user adaptive recommendation. This information distribution form will extend increasingly, and the influence on the tourism industry will be significant. This research constructs user-centred tourism information system with objective information and subjective ratings. Then it innovates tourism website using Web2.0 technologies. This study proposes to use the Weblog interface for the system to collect much tourism information. Further, to recommend some products for users, it utilizes Collaborative Filtering Algorithm to resolve which products should be suggested. This paper introduces an application to a restaurant information website., Information Processing Society of Japan (IPSJ), Japanese
• Development of Support System for Tour Planning and its Application to Hokkaido University Campus
  maruyama kana; yamamoto masahito; ohuchi azuma, Proceedings of the Fuzzy System Symposium, 22, 735, 738, 06 Sep. 2006
  In this paper, we propose a support system for tour planning that can be used from PCs and portable devices via http protocol. In this system, when a tourist specifies the starting location, the end location, the usable time and the candidate destinations with relative importance, the departure time and the arrival time, the nearly best schedule is automatically computed. We model tourism as a combinatorial problem and give a practical example of Hokkaido campus adopted as Testbed. In particular, we examine computing time that is the most inevitable problem when this support is operating. We assume that practical computing time for tour planning is ten seconds and compare heuristic and exact algorithms in terms of attraction of total tour. Our experimental results show that if we conduct this comparison and register these results in advance, our tour planning system can compute the nearly best schedule in reasonable time., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• Proposal of Website Classification Technique by Keyword Analysis and Application to Real Data
  Honda Takatomo; Yamamoto Masahito; Ohuchi Azuma, Proceedings of the Fuzzy System Symposium, 22, 723, 726, 06 Sep. 2006
  Websites are classified into various categories so that it is shown in the directory-based search engine like Yahoo! Japan. Nouns the feature in each category should exist because Website in the category has contents related to the category. If nouns the feature in such each category can be used, websites can be classified into categories. In this paper, it proposes the automatic website classification technique by the similarity with the category based on the score of all nouns extracted in websites, using the appearance frequency of each category. The effectiveness is verified from 10 categories in the directory-based search engine Yahoo! Japan., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• Self-Assessment System for Hotel Classification
  Oyanagi Yukihiko; Kawamura Hidenori; Yamamoto Masahito; Ohuchi Azuma; Yanagimori Toshinori; Magota Shigeki, Proceedings of the Fuzzy System Symposium, 22, 717, 722, 06 Sep. 2006
  We have developed a self-assessment system that can be easily used for hotel classification. In this paper, we show the relationships between tourists and hotels in recent years and point out some of the problems in the Japanese hotel market. And we outline that system and explain the effect such a self-assessment system may have on the market in Japan. This is the first trial in Japan of a hotel classification system we have developed in which an expert doesn't evaluate the hotel but the owner or manager evaluates his hotel by himself. This system will contribute to improving not only the relationship between tourists and hotels but also each hotel's management strategy., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• Learning Docking Control of Autonomous Recharging for Indoor Blimp Robot
  Minagawa Yoshihiro; Kawamura Hidenori; Yamamoto Masahito; Takaya Toshihiko; Ohuchi Azuma, Proceedings of the Fuzzy System Symposium, 22, 689, 692, 06 Sep. 2006
  In this paper, we propose a method of learning docking control of autonomous recharging for indoor blimp robot. Indoor blimp robot can fly in a three dimensional space. For this feature, indoor blimp robot might be applied to entertainment flight in an event hall, and searching for human beings in destructive buildings, etc. To achieve these applications, it might be necessary to fly for long term and to trace orbit accurately. There are many researches for tracing orbit for blimp robots, but it is rare to research for long term flight for indoor blimp robot. Indoor blimp robot cannot load heavy battery for flying longer because of payload restriction. To achieve long term flight, one approach is autonomous recharging. We proposed autonomous recharging system in the past papers. But its control does not be enough to accomplish every time recharging. We designed a new control system for blimp robot. This control is based on learning control. We compare a new approach with a past approach. In the end, we conclude that a new approach is suitable for an autonomous recharging for indoor blimp robot., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• Study of Tourist Activity Survey using Information Technology
  Nagao Mitsuyoshi; Kawamura Hidenori; Yamamoto Masahito; Ohuchi Azuma, Proceedings of the Fuzzy System Symposium, 22, 815, 818, 06 Sep. 2006
  In this paper, we propose a method for investigating and analyzing activity information on each tourist on the basis of information technology in order to realize effective tourism promotion which is suitable for current tourism environment. GPS is employed as a device to collect activity information on each tourist, and then activity is analyzed on the basis of the position data collected by GPS. The detailed information such as the facility name in which tourist stays is required to realize effective tourism promotion. We also discuss a method for acquiring such information through the internet., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• D_034 Automatic Website Classification by Extracting and Using Characteristic Nouns of Category
  Honda Takatomo; Yamamoto Masahito; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 5, 2, 77, 79, 21 Aug. 2006
  Forum on Information Technology, Japanese
• D_037 Wrapping from HTML to XML Using Two or More Cases
  Mori Yasunao; Yamamoto Masahito; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 5, 2, 85, 86, 21 Aug. 2006
  Forum on Information Technology, Japanese
• H_019 Sequence Design of Glued connected portion in DNA Tile Structure
  Iimura Naoki; Yamamoto Masahito; Tanaka Fumiaki; Kameda Atsushi; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 5, 2, 431, 432, 21 Aug. 2006, [Peer-reviewed]
  Forum on Information Technology, Japanese
• J_050 Leaming Control of Indoor Balloon Robot for Docking to Recharging Station
  Minagawa Yoshihiro; Kawamura Hidenori; Yamamoto Masahito; Takaya Toshihiko; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 5, 3, 301, 303, 21 Aug. 2006
  Forum on Information Technology, Japanese
• Construction of DNANanostructures based on Self-Assemble
  YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG technical reports, 2006, 64, 91, 96, 16 Jun. 2006
  Construction of DNA nanostructures based on self-assemble and synthetic biology are attractive research areas in DNA computing research since Adleman's demonstration of solving combinatorial problems. In this paper, we describe some of researches related to the construction of DNA nanostructures such as DNA tiles and DNA origami. In particular, some practical issues for implementing the algorithmic assemble of DNA tiles are discussed. Also, we present the sequence design method for obtaining stable DNA tiles., Information Processing Society of Japan (IPSJ), Japanese
• DNAタイル構造のための塩基配列設計支援システムの構築
  山本 雅人; 大内 東, 情報処理北海道シンポジウム2006, 2006, [Peer-reviewed]
• DNAタイルによる計算論的ナノテクノロジー
  山本 雅人, 第28回日本分子生物学会年会,シンポジウム「ナノバイオテクノロジー・分析から構築の科学へ」 Vol.28,No.1, 126, 127, 2006
• Stability evaluation method of DNA tile structure
  山本 雅人, Proceeding of the 11th International Symposium on Artificial Life and Robotics(AROB 11th'06) Vol.11, No.1, 2006
• Data Manipulation of DNA Relational Database
  山本 雅人, Proceeding of the 11th International Symposium on Artificial Life and Robotics(AROB 11th '06) Vol.11, No.1, 629, 632, 2006
• Round system of autonomous indoor blimp robot: 2)
  高谷敏彦; 川村秀憲; 皆川良弘; 山本雅人; 大内東, ファジィシステムシンポジウム講演論文集(CD-ROM), 22nd, 167, 167, 2006
  A flight robot is with wide range move flexibility large since moving in 3-dimensional space is easy. When Blimp robot is compared with other flight robots, prolonged movement is possible for Blimp robot. Furthermore, Blimp robot has high safety to crash, and can use it safely also in indoor space. We developed the Blimp robot hovering control method by present, and realized stable control of a straight line and rotation operation, or operation called vertical movement using the control method. However, in the architecture design of Blimp robot of the conventional research, there was a problem that software creation of autonomous control was difficult. Moreover, Blimp robot tended to be influenced of the air current, and there was a problem that it was difficult to rectify the influence of an air current. In this research, in order to completely autonomous indoor Blimp robot to round indoor automatically was verified.., Japan Society for Fuzzy Theory and Intelligent Informatics, Japanese
• GPSログデータからの周遊観光行動の推定及び分析
  長尾光悦; 川村秀憲; 山本雅人; 大内東, 情報処理学会全国大会講演論文集, 68th, 4, 345, 346, 2006
  情報処理学会, Japanese
• Docking Control of Autonomous Recharging for Indoor Balloon Robot
  MINAGAWA Yoshihiro; KAWAMURA Hidenori; YAMAMOTO Masahito; TAKAYA Toshihiko; OHUCHI Azuma, IPSJ SIG technical reports, 2005, 125, 1, 5, 17 Dec. 2005
  In this paper, we propose a method of docking control of autonomous recharging for indoor balloon robot. Indoor balloon robot might be applied to entertainment flight in an event hall, such as synchronized flight of multiple balloon robots, interactive balloon robot. It might be necessary for long term flight to achieve entertainment flight. However, indoor balloon robot cannot load heavy battery for long term flight. To achieve long term flight, one approach is autonomous recharging. In the case of low battery remainder, indoor balloon robot moves to charging station for recharging. For autonomous recharging, we designed charging station and docking control for indoor balloon robot., Information Processing Society of Japan (IPSJ), Japanese
• A-010 A Development of DNA Relational Database
  Kita Yutaka; Kashiwamura Satoshi; Kameda Atsushi; Yamamoto Masahito; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 4, 1, 21, 23, 22 Aug. 2005
  Forum on Information Technology, Japanese
• H-031 Sequence Design based on Free Energy for DNA tile structure
  Iimura Naoki; Yamamoto Masahito; Tanaka Fumiaki; Kameda Atsushi; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 4, 2, 371, 373, 22 Aug. 2005
  Forum on Information Technology, Japanese
• H-032 自由エネルギーに基づいた塩基配列設計に関する研究(H分野:生体情報科学)
  田中 文昭; 亀田 充史; 山本 雅人; 大内 東, 情報科学技術フォーラム一般講演論文集, 4, 2, 375, 377, 22 Aug. 2005
  FIT(電子情報通信学会・情報処理学会)運営委員会, Japanese
• H-030 Study of Construction of Molecular Memory Based on DNA and Enlargement of Capacity
  Kashiwamura Satoshi; Yamamoto Masahito; Kameda Atsushi; Ohuchi Azuma, 情報科学技術フォーラム一般講演論文集, 4, 2, 367, 369, 22 Aug. 2005
  Forum on Information Technology, Japanese
• Feature Analysis and Keyword Extraction for Automatic Classification of Web site
  HONDA Takatomo; YAMAMOTO Masahito; KAWAMURA Hidenori; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2005, 78, 1, 4, 01 Aug. 2005
  A website is considered to be belonging to a certain category such as accommodations, restaurants, facilities and so on, as shown in the directory-typed search engines. Generally, a website includes valuable information such as links to or from other sites, many files with extensions and many text data, in terms of the category classification. In this paper, we investigate whether many websites belonging to a certain category have some common features or not. In particular, we show that some keywords are very important to classify websites to the categories. By using these analyzed keyword information, we present that many websites could be classified to an appropriate category with high precision when three categories (museum, restaurant and accommodations) related to tourism are treated as examples., Information Processing Society of Japan (IPSJ), Japanese
• Extraction of Activity Information on Circular Tour from GPS Log
  NAGAO Mitsuyoshi; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2005, 78, 23, 28, 01 Aug. 2005
  In this paper, we propose an extraction method of activity information on circular tour from GPS log. In this research, we focus on circular tour with rent-a-car. The proposed method extracts basic activity information which includes the information about destinations and movements from GPS log which consist of the position information on circular tour. The analysis for circular tour is performed on the basis of the extracted basic activity information. We confirm the effectiveness of the proposed method through the experiment using GPS log collected from actual tourists on Hokkaido circular tour. In addition, we analyze Hokkaido circular tour and discuss the analysis result., Information Processing Society of Japan (IPSJ), Japanese
• Feature Analysis and Keyword Extraction for Automatic Classification of Web Site
  HONDA Takatomo; YAMAMOTO Masahito; KAWAMURA Hidenori; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 105, 224, 1, 4, 25 Jul. 2005
  A website is considered to be belonging to a certain category such as accommodations, restaurants, facilities and so on, as shown in the directory-typed search engines. Generally, a website includes valuable information such as links to or from other sites, many files with extensions and many text data, in terms of the category classification. In this paper, we investigate whether many websites belonging to a certain category have some common features or not. In particular, we show that some keywords are very important to classify websites to the categories. By using these analyzed keyword information, we present that many websites could be classified to an appropriate category with high precision when three categories (museum, restaurant and accommodations) related to tourism are treated as examples., The Institute of Electronics, Information and Communication Engineers, Japanese
• Extraction of Activity Information on Circular Tour from GPS Log
  NAGAO Mitsuyoshi; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 105, 224, 23, 28, 25 Jul. 2005
  In this paper, we propose an extraction method of activity information on circular tour from GPS log. In this research, we focus on circular tour with rent-a-car. The proposed method extracts basic activity information which includes the information about destinations and movements from GPS log which consist of the position information on circular tour. The analysis for circular tour is performed on the basis of the extracted basic activity information. We confirm the effectiveness of the proposed method through the experiment using GPS log collected from actual tourists on Hokkaido circular tour. In addition, we analyze Hokkaido circular tour and discuss the analysis result., The Institute of Electronics, Information and Communication Engineers, Japanese
• 1P1-S-060 Flight Control of Indoor Blimp Robot with T-Engine System(Flying Robot 1,Mega-Integration in Robotics and Mechatronics to Assist Our Daily Lives)
  Kawamura Hidenori; Kadota Hisao; Yamamoto Masahito; Takaya Toshihiko; Ohuchi Azuma, The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2005, 89, 89, 09 Jun. 2005
  The Japan Society of Mechanical Engineers, Japanese
• 瓦れき内探索用センサユニット「探査ボール」の設計
  山本雅人; 井上健司; 田窪朋人; 新井健生, ロボティクスシンポジア予稿集, 10th, 2005
• グローバル観光における情報技術(IT)の成長とインパクト
  Pauline Sheldon; 山本 雅人; 渡久地 明, 観光と情報 : 観光情報学会誌, 1, 1, 25, 32, 2005
  記事種別: 翻訳, [札幌] : 観光情報学会, Japanese
• DNAタイル構造の安定性評価法
  山本 雅人; 大内 東, 北海道情報処理シンポジウム講演論文集 2005・1, 126, 127, 2005
• DNAを記憶素子として用いた分子メモリの開発と大容量化に関する検討
  山本 雅人; 大内 東, 第4回情報科学技術フォーラム(FIT2005) H-030, 357, 259, 2005
• Experimental Challenge of Scaled-up Hierarchical DNA Memory Expressing 10,000-Address Space
  山本 雅人, Proceedings of The 11th International Meeting on DNA Computing Vol.11, No.1, 396, 2005
• DNAナノテクノロジー-DNAタイルによる自己組織的ナノ構造制御-
  山本 雅人, 第4回情報科学技術フォーラム(FIT2005)イベント企画チュートリアル「分子計算のしくみ」 Vol.4, No.1, 7, 11, 2005
• Development of Indoor Blimp Robot System and Autonomous flight control
  高谷敏彦; 川村秀憲; 山本雅人; 大内東, 飛行機シンポジウム講演集(CD-ROM), 43rd, 2005
• 宿泊施設の公式サイト検索エンジン「オフィシャルゲート」の開発について
  川村秀憲; 本山恵子; 山本雅人; 大内東, 情報処理学会全国大会講演論文集, 67th, 3, 83, 84, 2005
  情報処理学会, Japanese
• 2P1-S-059 Automated Topological Map for Indoor Blimp with Ultrasonic Sensors(Flying Robot 4,Mega-Integration in Robotics and Mechatronics to Assist Our Daily Lives)
  Minagawa Yoshihiro; Kawamura Hidenori; Yamamoto Masahito; Takaya Toshihiko; Ohuchi Azuma, Proceeding of The 2005 JSME Conference on Robotics and Mechatronics, (ROBOMEC2005), Kobe, 2005, 218, 218, 2005
  The Japan Society of Mechanical Engineers, Japanese
• Development of Autonomous Balloon Robot System with Vision Camera and PD Position Controller
  KADOTA HISAO; KAWAMURA HIDENORI; YAMAMOTO MASAHITO; TAKAYA TOSHIHIKO; OHUCHI AZUMA, IPSJ journal, 45, 6, 1715, 1724, 15 Jun. 2004
  Balloon robots have attracted attention as new type indoor robots for various applications, e.g., observation, guidance, and amusement flying. A balloon robot can float and move long time in 3-dimensional space by low energy. However, it is difficult to control positioning of a balloon robot because it has great inertia and is easily effected by a little air stream of a conditioner. Positioning control under usual indoor environment is key technology to realize an autonomous balloon robot. In this paper, we develop the indoor-type balloon robot system with a light wireless vision camera. The balloon robot is controlled to keep at the target position based on simple vision processing and PD-controller. Vision processing is realized by perceiving a red circle on the floor as a landmark. In the experiments, several PD settings are investigated for positioning control, and we conclude the paper by that P-controller is suitable to keep at the target position and PD-controller successfully works to go in the direction of target from far position., Information Processing Society of Japan (IPSJ), Japanese
• Verification on Effectiveness of Customer - driven Reservation Adjusment Mechanism by Multiagent Analysis
  SHINOHARA Toshio; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2004, 29, 137, 142, 17 Mar. 2004
  Reservation systems, such as an airline ticket and a concert ticket, are first-come firest-served resource allocation mechanisms. In this paper, we propose a resource allocation adjustment mechanism which performs reservation adjustment by customer driven, and verify effectiveness of the mechanism for various demand structures by the multi-agent simulation., Information Processing Society of Japan (IPSJ), Japanese
• Quantification of Interactive Behavior in Multiagent Systems
  YANAGISAWA Noriko; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2004, 29, 101, 106, 16 Mar. 2004
  In most presented researches on multi agent systems, the macroscopic system performance is discussed with such specific measures as gain or achievement. These measures are still important, but when we observe the complex system, it is impossible to understand the essentials of its behavior only using these measures. Therefore we propose an analysis method with entropy and mutual information, the essential terms to analyze the complex system related to macroscopic characteristics. Consequently, we verify the validity of quantitative analysis using entropy and mutual information., Information Processing Society of Japan (IPSJ), Japanese
• GPS Log Data Mining for Acquisition of Tourism Information
  NAGAO Mitsuyoshi; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2004, 29, 7, 12, 15 Mar. 2004
  In this paper, we propose a GPS log data mining method for acquisition of tourism information. Recently, the number of tourists which utilize rent-a-car has extremely increased according to shift of tourism type from group tour to personal tour. Therefore, in this research, we perform the extraction of personal behavior information which is effective for tourism information from GPS log data in rent-a-car tour. Currently, the position detection with high accuracy can be performed by using GPS because SA which leads to decrease of accuracy has been removed. However, when GPS is independently used, detection error and impossibility frequently occur under influence of electrolytic dissociation, atmosphere condition, GPS receiver condition and so on. The proposed method is robust against such situations and can extract the accurate personal behavior information from the GPS log data with error. We confirm the effectiveness of proposed method through the experiments using GPS log data collected from tourists in Hokkaido., Information Processing Society of Japan (IPSJ), Japanese
• Verification on Effectiveness of Customer-driven Reservatioin Adjusment Mechanism by Multiagent Analysis
  SHINOHARA Toshio; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 103, 726, 1, 6, 10 Mar. 2004
  Reservation systems, such as an airline ticket and a concert ticket, are first-come firest-served resource allocation mechanisms. In this paper, we propose a resource allocation adjustment mechanism which performs reservation adjustment by customer driven, and verify effectiveness of the mechanism for various demand structures by the multi-agent simulation., The Institute of Electronics, Information and Communication Engineers, Japanese
• Quantification of Interactive Behavior in Multiagent Systems
  YANAGISAWA Noriko; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 103, 725, 71, 76, 09 Mar. 2004
  In most presented researches on multi agent systems, the macroscopic system performance is discussed with such specific measures as gain or achievement. These measures are still important, but when we observe the complex system, it is impossible to understand the essentials of its behavior only using these measures. Therefore we propose an analysis method with entropy and mutual information, the essential terms to analyze the complex system related to macroscopic characteristics. Consequently, we verify the validity of quantitative analysis using entropy and mutual information., The Institute of Electronics, Information and Communication Engineers, Japanese
• GPS Log Data Mining for Acquisition of Tourism Information
  NAGAO Mitsuyoshi; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 103, 724, 7, 12, 08 Mar. 2004
  In this paper, we propose a GPS log data mining method for acquisition of tourism information. Recently, the number of tourists which utilize rent-a-car has extremely increased according to shift of tourism type from group tour to personal tour. Therefore, in this research, we perform the extraction of personal behavior information which is effective for tourism information from GPS log data in rent-a-car tour. Currently, the position detection with high accuracy can be performed by using GPS because SA which leads to decrease of accuracy has been removed. However, when GPS is independently used, detection error and impossibility frequently occur under influence of electrolytic dissociation, atmosphere condition, GPS receiver condition and so on. The proposed method is robust against such situations and can extract the accurate personal behavior information from the GPS log data with error. We confirm the effectiveness of proposed method through the experiments using GPS log data collected from tourists in Hokkaido., The Institute of Electronics, Information and Communication Engineers, Japanese
• DNAヘアピンを利用したRAMによるアクエアスコンピューティング
  山本 雅人; 大内 東, 情報処理北海道シンポジウム2004講演論文集 1, 16, 17, 2004, [Peer-reviewed]
• サッカーボール型DNA分子の設計と基礎実験
  山本 雅人; 大内 東, 情報処理北海道シンポジウム2004講演論文集 1, 14, 15, 2004, [Peer-reviewed]
• General Protocol for Evaluating the Degree of Occurrence of Mis-Hybridization
  山本 雅人, Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th'04) 1, 303, 308, 2004, [Peer-reviewed]
• Construction and Verification of DNA Hairpin-based RAM
  山本 雅人, Proceedings of the Ninth International Symposium on Artificial Life and Robotics (AROB 9th'04) 2, 388, 391, 2004, [Peer-reviewed]
• Development of the Ambiguous Searching System Using the Color Information in the Outdoor Sculpture Database
  大野貴司; 中津川雅史; 山本雅人; 川村秀憲; 仲野三郎; 橋本信夫; 大内東, 電気学会情報システム研究会資料, IS-04, 31-36, 2004
• An Automatic Collection System for Official Accommodation Websites
  TAKAGI Kohichiro; YAMAMOTO Masahito; NAKATSUGAWA Masashi; KAWAMURA Hidenori; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 103, 305, 31, 36, 15 Sep. 2003
  It is becoming increasingly difficult to find desired information from the World Wide Web (WWW) due to its rapid growth, and especially, to find web pages belonging to a certain category. For example, it is difficult for tourists to search for official accommodation websites such as hotels and pensions in the area that they will visit. Existing search engines are not suitable for this purpose because these search engines utilize some keywords to extract the information, and accommodation websites do not always contain the most common words. In this paper, we develop an automatic collection system that can extract some accommodation websites in a certain region and detect whether a website is an official one. Our main idea is the utilization of telephone numbers and link-structure analysis. We have applied our proposed system to Hokkaido local accommodation websites in some areas, although the proposed system can also be applied to other objects by changing the extraction rule. This is the first step of our trial to make a dynamic Internet Directory., The Institute of Electronics, Information and Communication Engineers, English
• An Automatic Collection System for Official Accommodation Websites
  TAKAGI Kohichiro; YAMAMOTO Masahito; NAKATSUGAWA Masashi; KAWAMURA Hidenori; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2003, 90, 99, 104, 14 Sep. 2003
  It is becoming increasingly difficult to find desired information from the World Wide Web (WWW) due to its rapid growth, and especially, to find web pages belonging to a certain category. For example, it is difficult for tourists to search for official accommodation websites such as hotels and pensions in the area that they will visit. Existing search engines are not suitable for this purpose because these search engines utilize some keywords to extract the information, and accommodation websites do not always contain the most common words. In this paper, we develop an automatic collection system that can extract some accommodation websites in a certain region and detect whether a website is an official one. Our main idea is the utilization of telephone numbers and link-structure analysis. We have applied our proposed system to Hokkaido local accommodation websites in some areas, although the proposed system can also be applied to other objects by changing the extraction rule. This is the first step of our trial to make a dynamic Internet Directory., Information Processing Society of Japan (IPSJ), Japanese
• An Automatic Collection System for Official Accommodation Websites: 宿泊施設の公式ホームページ収集システム: 小特集 「アクティブマイニング」および一般
  61, 99, 104, Sep. 2003
  English
• A Study on Cooperation in Collective Behavior Poroblem Based on Tag Based Mechanism
  HAMADA Takahiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2003, 8, 145, 150, 29 Jan. 2003
  A simple model of tag-mediated decision making for players playing the one-shot prisoner's dilemma game is described. In our simulation, tags, which are visible from each other, and there is no relation between the player's tag and the one's strategy firstly. The player's decision making is based on the partner's tag, and the player's strategy is evolved within the same tag members. We examine the effect of the difference in the rate, which is the number of the members having the same tag, and consider which is more advantageous between the minority group and majority one., Information Processing Society of Japan (IPSJ), Japanese
• A Study on Cooperation in Collective Behavior Poroblem Based on Tag Based Mechanism
  HAMADA Takahiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 102, 615, 7, 12, 24 Jan. 2003
  A simple model of tag-mediated decision making for players playing the one-shot prisoner's dilemma game is described. In our simulation, tags, which are visible from each other, and there is no relation between the player's tag and the one's strategy firstly. The player's decision making is based on the partner's tag, and the player's strategy is evolved within the same tag members. We examine the effect of the difference in the rate, which is the number of the members having the same tag, and consider which is more advantageous between the minority group and majority one., The Institute of Electronics, Information and Communication Engineers, Japanese
• Development of “Search Balls”: Sensor Units for Searching Inside of Rubbles. 2nd Report: Identification of Balls and Acquisition of Sensor Information
  山本雅人; 井上健司; 前泰志; 新井健生, 日本ロボット学会学術講演会予稿集(CD-ROM), 21st, 2003
• Study of the Efficient Parameter Setting based on Mahalanobis-Taguchi Strategy, Proceedings of the International Technical Conference on Circuits/Systems
  山本 雅人, Computers and Communications (ITC-CSCC03), 640, 643, 2003
• Construction of DNA Hairpin based RAM, Proceedings of the International Technical Conference on Circuits/Systems
  山本 雅人, Computers and Communications (ITC-CSCC03), 1897, 1900, 2003
• Study of the Efficient Parameter Setting based on Mahalanobis-Taguchi Strategy
  山本 雅人, Proceedings of the international Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC03), 640, 643, 2003
• The Effect on a Bonding Strength by the Freedom of Movement of a DNA strand on a Solid Support in DNA Computing
  山本 雅人, Proceedings of the International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC03), 1901, 1904, 2003
• State Transition Model Based on DNA Polymerization, Proceedings of the International Technical Conference on Circuits/Systems
  山本 雅人, Computers and Communications (ITC-CSCC03), 1889, 1892, 2003
• Two Step Search for DNA Sequence Design, Proceedings of the International Technical Conference on Circuits/Systems
  山本 雅人, Computers and Communications (ITC-CSCC03), 1815, 1818, 2003
• State Transition Model Based on DNA Polymerization
  山本 雅人, Proceedings of the International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC03), 1889, 1892, 2003
• Learning control of autonomous airship robot for pursuit task
  西村絢子; 川村秀憲; 山本雅人; 大内東, 情報処理学会シンポジウム論文集, 2003, 1, 2003
• Design and Modeling of an Indoor Balloon-type Robot
  柳沢紀子; 川村秀憲; 山本雅人; 大内東, 情報処理学会シンポジウム論文集, 2003, 1, 2003
• A Study on Behavioral Structure of Artificial Market based on Adaptive Hyper - game
  HAMADA Takahiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ SIG Notes. ICS, 2002, 1, 127, 134, 09 Jan. 2002
  In generally, we often play a game against the entity, which we do not know what really is. In the case, the result of the game is often dependent on the scale of participant and the other players' strategies, but we may not get their information. And all we can know is the result. We are to investigate the player's behavior and the behavior as a whole of players in such the environment. So, we make a simple model to study the behavior of players when against the entity whose decision-making system is not clearly known to them., Information Processing Society of Japan (IPSJ), Japanese
• A Study on Behavioral Structure of Artificial Market based on Adaptive Hyper-game
  HAMADA Takahiro; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, IEICE technical report. Artificial intelligence and knowledge-based processing, 101, 536, 33, 40, 03 Jan. 2002
  In generally, we often play a game against the entity, which we do not know what really is. In the case, the result of the game is often dependent on the scale of participant and the other players' strategies, but we may not get their information. And all we can know is the result. We are to investigate the player's behavior and the behavior as a whole of players in such the environment. So, we make a simple model to study the behavior of players when against the entity Whose decision-making system is not clearly known to them., The Institute of Electronics, Information and Communication Engineers, Japanese
• Improvement of the Reliability of Experiments in DNA Computing
  山本 雅人, Preliminary Proceedings of Eighth International Meeting on DNA Based Computers (DNA8), 333, 333, 2002
• Constructions of Security System for Information Encoded by DNA
  山本 雅人, Preliminary Proceedings of Eighth International Meeting on DNA Based Computers (DNA8), 337, 337, 2002
• 人工市場研究の為のX-Economyシステムの開発と実装(情報・経済)
  川村 秀憲; 山本 雅人; 大内 東; 車谷 浩一, 日本オペレーションズ・リサーチ学会春季研究発表会アブストラクト集, 2001, 250, 251, 01 May 2001
  公益社団法人日本オペレーションズ・リサーチ学会, Japanese
• X - Economy : Design of Virtual Financial Market
  KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma; KURUMATANI Kouichi, IPSJ SIG Notes. ICS, 2001, 1, 61, 66, 10 Jan. 2001
  In this paper, we report the prototype architecture of X-Economy System including X-Economy Server and Clients. X-Economy is the project aiming for foundation of standard problem as artificial social and economic systems. By X-Economy system, it will be possible to construct arbitrary system design for investigation of behavior of social and economic systems between micro scale agents and macro scale., Information Processing Society of Japan (IPSJ), Japanese
• X-Economy : Design of Virtual Financial Market
  KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma; KURUMATANI Kouichi, IEICE technical report. Artificial intelligence and knowledge-based processing, 100, 529, 61, 66, 03 Jan. 2001
  In this paper, we report the prototype architecture of X-Economy System including X-Economy Server and Clients.X-Economy is the project aiming for foundation of standard problem as artificial social and economic systems.By X-Economy system, it will be possible to construct arbitrary system design for investigation of behavior of social and economic systems between micro scale agents and macro scale., The Institute of Electronics, Information and Communication Engineers, Japanese
• 都道府県郡市医師会情報化実態調査と情報化指標の構築
  大内東; 三田村保; 栗原正仁; 山本雅人; 宮腰昭男; 中川俊男; 長沢邦雄, 医療情報学連合大会論文集, 21st, 2001
• Construction of Infectious Disease Surveillance Network for National Level : About Database of Infectious Disease Incidence
  TANAKA Suguru; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, 医療情報学連合大会論文集, 20, 664, 665, 23 Nov. 2000
  Japanese
• Classification System for Care Insurance
  KAWAI Takashi; KAWAMURA Hidenori; YAMAMOTO Masahito; OHUCHI Azuma, 医療情報学連合大会論文集, 20, 782, 783, 23 Nov. 2000
  Japanese
• Learning of Virtual Words Utilized in Negotiation Process between Agents
  IIZUKA Hiroyuki; SUZUKI Keiji; YAMAMOTO Masahito; OHUCHI Azuma, IEICE transactions on fundamentals of electronics, communications and computer sciences, 83, 6, 1075, 1082, 25 Jun. 2000
  Agent-based simulations are expected to enable analysis of complex social phenomena. In such simulations, one of the important behaviors of the agents is negotiation. Through-out the negotiations, the agents can make complex interactions with each other. Therefore, the ability of agents to perform negotiation is important in simulations of artificial societies. In this paper, we focus on price negotiations, in which the two sides have opposing interests. In the conventional price negotiation model, the process consists of an alternate succession of directly presented offers and counter-offers exchanging the desired prices. As an extended price negotiation model, we introduce virtual words to mimic the negotiation techniques of humans for indirectly presenting the desired price. The process of the proposed negotiation model consists of an alternate succession of offers of desired price and counter-offers of a word. The words represent the degree of the agent's demand. We propose agents with reinforcement learning who can acquire the ability to distinguish words and use them to negotiate. As a result, we will show that the virtual words became meaningful in the process of negotiations between agents whose negotiating strategies are acquired by reinforcement leaning., The Institute of Electronics, Information and Communication Engineers, English
• Collective Behavior of Agents with multi-objective evaluation function
  SUZUKI Keiji; YAMASHITA Tomohisa; YAMAMOTO Masahito; OHUCHI Azuma, 自律分散システム・シンポジウム資料 = SICE Symposium on Decentralized Autonomous Systems, 12, 13, 16, 21 Jan. 2000
  Japanese
• Implementation of Robust Face Identification System against Environment Fluctuation
  NAGAO Mitsuyoshi; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma, 自律分散システム・シンポジウム資料 = SICE Symposium on Decentralized Autonomous Systems, 12, 25, 28, 21 Jan. 2000
  Japanese
• Evolutionary Acquisition of Pheromone Style Communication on Ants War
  KAWAMURA Hidenori; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma, 自律分散システム・シンポジウム資料 = SICE Symposium on Decentralized Autonomous Systems, 12, 17, 20, 21 Jan. 2000
  Japanese
• Airship Control to Goal Position Based on Reinforcement Learning
  MOTOYAMA Keiko; SUZUKI Keiji; YAMAMOTO Masahito; OHUCHI Azuma, 自律分散システム・シンポジウム資料 = SICE Symposium on Decentralized Autonomous Systems, 12, 29, 34, 21 Jan. 2000
  Japanese
• 眼鏡の有無識別処理の導入による個人認証システムの効率化
  長尾光悦; 山本雅人; 大内東, 品質工学研究発表大会論文集, 8th, 2000
• 2A1-30-033 小型飛行船の強化学習制御における行動出力に関する考察
  本山 恵子; 鈴木 恵二; 山本 雅人; 大内 東, ロボティクス・メカトロニクス講演会講演概要集, 2000, 65, 65, 2000
  実空間を移動する小型飛行船に強化学習を適用する場合は, 連続空間の取り扱い等の実ロボットへの適用による問題の他に, 慣性, 空気抵抗, また気温変化や気流等環境の変動の影響を大きく受けるという飛行船特有の問題を考慮しなくてはならない。本研究では, このような問題を考慮した強化学習法を提案し, 外部カメラからの観測を用いた実ロボットに対し飛行制御実験を行なう。, 一般社団法人日本機械学会, Japanese
• Creating Cooperative Pass Play with Soccer Simulation Agent
  秋山 直之; 鈴木 恵二; 山本 雅人; 大内 東, ゲームプログラミングワークショップ1999論文集, 1999, 14, 193, 200, 15 Oct. 1999
  The purpose of this research is to create the cooperative pass play with soccer simulation agent. The cooperative pass play, like "wall pass" or "through pass", needs to synchronize passer's intending space to pass with receiver's intending space to receive the pass. In this research, we propose the method for realizing the play. In addition, we adopt the hybrid learning system-combined neural network, learning classifier system, and Q-learning-proposed by Robert E. Smith in order that soccer agents may learn autonomously to decide appropriate space in accordance with the environmental states to complete pass play. By using the agent implemented the method, we try to realize the cooperative pass play in the two-on-one situation on the RoboCup Soccer Server.
  The purpose of this research is to create the cooperative pass play with soccer simulation agent. The cooperative pass play, like "wall pass" or "through pass", needs to synchronize passer's intending space to pass with receiver's intending space to receive the pass. In this research, we propose the method for realizing the play. In addition, we adopt the hybrid learning system-combined neural network, learning classifier system, and Q-learning-proposed by Robert E. Smith in order that soccer agents may learn autonomously to decide appropriate space in accordance with the environmental states to complete pass play. By using the agent implemented the method, we try to realize the cooperative pass play in the two-on-one situation on the RoboCup Soccer Server., 情報処理学会, Japanese
• Evolutionary State Space Configuration for RL Applied to Airship Control
  MOTOYAMA Keiko; SUZUKI Keiji; YAMAMOTO Masahito; OHUCHI Azuma, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 9, 125, 128, Oct. 1999
  Japanese
• Network based Multi-agents system for solving distributed problem
  TSUCHIDA Yasuhiro; SUZUKI Keiji; YAMAMOTO Masahito; OHUCHI Azuma, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 9, 177, 180, Oct. 1999
  Japanese
• Consideration of Recognition ability and Action-selection in Soccer Agents
  HIRAMOTO Masatoshi; SUZUKI Keiji; YAMAMOTO Masahito; OHUCHI Azuma, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 9, 195, 196, Oct. 1999
  Japanese
• Toward an agent agreemant with human using a Collaborative Communication Tool
  IIZUKA Hiroyuki; SAITOH Hajime; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma, 自律分散システム・シンポジウム資料 = SICE Symposium on Decentralized Autonomous Systems, 11, 155, 158, 18 Jan. 1999
  Japanese
• 感染症発生動向予測に関する基礎研究
  田中卓; 山本雅人; 鈴木恵二; 大内東, 医療情報学連合大会論文集, 19th, 1999
• Prediction of Infectious Disease Surveillance using MTS method.
  田中卓; 山本雅人; 鈴木恵二; 大内東, 品質工学研究発表大会論文集, 7th, 1999
• 自由回答文解析機能を付加した医療分野向けアンケートシステムの構築
  田中宏明; 山本雅人; 鈴木恵二; 大内東, 医療情報学連合大会論文集, 19th, 1999
• A Study of Facial Expression Recognition based on MTS.
  長尾光悦; 山本雅人; 鈴木恵二; 大内東, 品質工学研究発表大会論文集, 7th, 1999
• Analysis of MTS.
  中津川雅史; 山本雅人; 鈴木恵二; 大内東, 品質工学研究発表大会論文集, 7th, 1999
• 地域産業戦略研究部会報告1
  大内 東; 山本 雅人, 日本オペレーションズ・リサーチ学会秋季研究発表会アブストラクト集, 1998, 92, 93, 15 Oct. 1998
  公益社団法人日本オペレーションズ・リサーチ学会, Japanese
• 組合せ問題に対するDNA計算アプローチ(組合せ最適化(1))
  山本 雅人; 平山 拓央; 大内 東; 柴 肇一; 堤 香織; 棟方 正信; 滝谷 重治, 日本オペレーションズ・リサーチ学会春季研究発表会アブストラクト集, 1998, 132, 133, 27 May 1998
  公益社団法人日本オペレーションズ・リサーチ学会, Japanese
• Evaluation Of The Image Retrieval System Using Interactive Evolutionary Computation.
  長尾光悦; 山本雅人; 鈴木恵二; 大内東, 電気学会産業システム情報化研究会資料, IIS-98, 23-31, 1998
• Design of Soccer-Simulation Agents based on Classifier System.
  秋山直之; 鈴木恵二; 山本雅人; 大内東, 日本機械学会ロボティクス・メカトロニクス講演会講演論文集, 1998, Pt.4, 1998
• Evaluation Of The Image Retrieval System Using Interactive Evolutionary Computation.
  長尾光悦; 山本雅人; 鈴木恵二; 大内東, 人工知能学会知識ベースシステム研究会資料, 1998
• Optimization Algorithm for Vehicle Routing Problems Based on Autonomous Problem Sharing with Pheromone Communication.
  川村秀憲; 山本雅人; 鈴木恵二; 大内東, 最適化シンポジウム講演論文集, 3rd, 1998
• A Study on the Distributed Optimization Algorithm Based on Pheromone Information for Vehicle Routing Problems
  KAWAMURA Hidenori; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 7, 501, 504, 10 Nov. 1997
  Japanese
• A Study on the Computatianal Accuracy in DNA Computation
  YAMAMOTO Masahito; HIRAYAMA Takuo; OHUCHI Azuma; SHIBA Toshikazu; TSUTSUMI Kaori; MUNEKATA Masanobu; TAKIYA Sigeharu, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 7, 549, 552, 10 Nov. 1997
  Japanese
• A Study of The Retrieval Support using Communication Agents
  NAGAO Mitsuyoshi; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 7, 489, 492, 10 Nov. 1997
  Japanese
• A genetic algorithm for optimal sequential partitioning problem
  ARAKI Hajime; MITAMURA Tamotsu; YAMAMOTO Masahito; SUZUKI Keiji; OHUCHI Azuma; KAJI Taichi, インテリジェント・システム・シンポジウム講演論文集 = FAN Symposium : fuzzy, artificial intelligence, neural networks and computational intelligence, 7, 301, 304, 10 Nov. 1997
  Japanese
• Search and analysis of copy partterns on Genome Informatics
  OHUCHI A.; YAMAMOTO M.; SUZUKI K.; MITAMURA T., Biophysics, 37, S129, Oct. 1997
  The Biophysical Society of Japan General Incorporated Association, Japanese
• Multiple alignment of amino acid sequences by simultaneous two-way search
  OKADA N.; OHUCHI A.; YAMAMOTO M.; SUZUKI K.; MITAMURA T., Biophysics, 37, S129, 394, Oct. 1997
  The Biophysical Society of Japan General Incorporated Association, Japanese
• Problems and Possibility of Molecular Computation
  TSUTSUMI K.; TANAKA K.; SHIBA T.; MUNEKATA M.; HIRAYAMA T.; YAMAMOTO M.; OHUCHI A.; TAKIYA S., Biophysics, 37, S62, Oct. 1997
  The Biophysical Society of Japan General Incorporated Association, Japanese
• Design and Implementation of Genomic Sequence Information Handling Module
  TANAKA, Takanori; YAMAMOTO, Masahito; MITAMURA, Tamotsu; OHUCHI, Azuma; OHYANAGI, Toshio; MATSUSHIMA, Norio, 全国大会講演論文集, 54, コンピュータと人間社会, 423, 424, 12 Mar. 1997
  本研究では、表現形式の異なる複数の遣伝配列情報データベース(DB)から抽出した情報を共通の形式に変換し格納する為の内部変数領域と、それらのデータの処理を行ない二次的な情報の抽出・生成を支援する為の基本操作関数との集合体であるオブジェクト指向型モジュールを構築する。任意の遣伝情報処理支援ツールを、本モジュール内に定義された操作関数の組合せで比較的容易に構成できる。, 情報処理学会, Japanese
• An Algorithm for Class Arrangement Problems based on Students' Grade
  Kamada, Makoto; Mitamura, Tamotsu; Yamamoto, Masahito; Ohuchi, Azuma, 全国大会講演論文集, 54, ソフトウェア科学・工学, 403, 404, 12 Mar. 1997
  クラス定員の制約の中で学生の意向を最大限に尊重するようなクラス編成を行なう問題をクラス編成問題という. 本稿はクラス編成問題の定式化をおこない、さらに学生の総合成績を考慮した手法を提案し、その効果を示す., 情報処理学会, Japanese
• Development of fundamental aspects of DNA Computation
  OKADA, Nobuhito; YAMAMOTO, Masahito; OHUCHI, Azuma; SHIBA, Toshikazu; MUNEKATA, Masanobu; TAKIYA, Shigeharu, 全国大会講演論文集, 54, ソフトウェア科学・工学, 279, 280, 12 Mar. 1997
  本稿では, l994年にAdlemanによって提案されたDNA分子計算の追実験を行うことで, DNA分子計算の実現の可能性, 及び, 実際に計算を行う上での問題点に関する検討を行う. またDNAのコーディングの際の配列同士の干渉について検討する., 情報処理学会, Japanese
• A propose of a blanching rule in the Davis-Putnam method
  YAMAMOTO, Masahito; OHUCHI, Azuma, 全国大会講演論文集, 54, 人工知能と認知科学, 329, 330, 12 Mar. 1997
  命題論理における充足可能性問題はNP-完全問題の一つとして知られており, 人工知能の分野における重要な問題の一つである. SATの解法として, Davis-Putnamの手続きの改良が効率的であることが報告されている。しかしながら, Davis-Putnamの手続きの計算効率は分枝変数選択規則に強く依存することも報告されている. 本稿では,難しい問題とされているランダム 3-SATを用いて, これまで提案されている分枝変数選択規則についての比較実験を行い, ランダム 3-SATに有効であるような分枝変数選択規則の性質について考察する., 情報処理学会, Japanese
• Multiple-Alignment of Amino Acid Sequences Using Branch- and -Bound Method.
  北田英俊; 戸野一博; 山本雅人; 大内東; 大柳俊夫; 松嶋範男, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• A Simulation of Majority Rules based on a Bounded Rationality.
  西川亨; 山本雅人; 大内東, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• PERT Calculation Supporting System Using Internet.
  小滝和英; 三田村保; 山本雅人; 大内東, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• An Algorithm for Class Arrangement Problems based on Students’ Preference and Grade.
  鎌田慎; 三田村保; 山本雅人; 大内東, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• A Tandem-Repeat search algorithm for Amino Acid Sequences.
  戸野一博; 北田英俊; 山本雅人; 大内東; 大柳俊夫; 松嶋範男, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• Detection and Correction of Reasoning Error by means of Counter Example Search.
  三上圭太; 山本雅人; 三田村保; 大内東, 計測自動制御学会北海道支部学術講演会論文集, 29th, 1997
• A Study on the Method for Solving Beta Satisfiability Problems
  Yamamoto, Masahito; Ohyanagi, Toshio; Ohuchi, Azuma, 全国大会講演論文集, 53, 人工知能と認知科学, 143, 144, 04 Sep. 1996
  命題論理において,充足可能性問題は人工知能の分野の基本的な問題の一つである.その解法として,Davis-Putnamの手続きをはじめ,様々な方法が提案されている.一方,充足可能性問題を拡張したβ節充足可能性問題がある.これは,通常の節をβ節に拡張して得られる問題であり,通常の節よりも記述が容易な制約があることが著者らによって示されている.また,β節充足可能性問題に対する解法として,著者らは,IEMBSATと呼ばれる手続き,および,Davis-Putnamの手続きを拡張した手続きを提案している.本論文では,これらの解法について非決定的である分枝変数の選択に関する経験則について検討を行う., 情報処理学会, Japanese
• Consideration on calculation complexity of .BETA. node satisfiability problem.
  山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Analysis of characteristic arrangement in cation channel protein.
  田中剛範; 山本雅人; 三田村保; 大内東; 大柳俊夫; 松嶋範男, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• 電位依存性陽イオンチャネルのトリペプチド縦列反復配列の解析
  田中剛範; 大内東; 山本雅人; 三田村保; 大柳俊夫; 松嶋範男, 日本生物物理学会年会講演予稿集, 34th, 1996
• Learning of cooperative action of multi- agent using TD(.LAMBDA.) intensified learning process.
  桂麻希子; 山本雅人; 三田村保; 鈴木恵二; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• A consideration on class composition problem using linear programming.
  鎌田慎; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Analysis of night sudden illness center allocation problem in the medical association in Sapporo City.
  黒河徹也; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Examination of threading method for estimation of space structure of protein.
  岡田信人; 山本雅人; 三田村保; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Research on tandem repeat analysis of gene information.
  戸野一博; 山本雅人; 三田村保; 大内東; 大柳俊夫; 松嶋範男, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Modeling of humoral immunity by multi- agent.
  沢田朋之; 正野啓太; 鈴木恵二; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Face image retrieval algorithm using genetic algorithm.
  長尾光悦; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Solution to optimum series partition problem by genetic algorithm.
  荒木肇; 三田村保; 山本雅人; 大内東; 加地太一, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Business scheduling preparation support system using Internet.
  小滝和英; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Modeling of humoral immunity system.
  正野啓太; 沢田朋之; 鈴木恵二; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Arrangement alignment considering tandem repeat.
  北田英俊; 山本雅人; 三田村保; 大内東; 大柳俊夫; 松嶋範男, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Solution to flight scheduling problem by Simulated Annealing method.
  川村秀憲; 三田村保; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1996, 1996
• Generalization of Davis-Putnam Procedure for a set of β clauses
  Yamamoto, Masahito; Ohyanagi, Toshio; Ohuchi, Azuma, 全国大会講演論文集, 50, 人工知能及び認知科学, 1, 2, 15 Mar. 1995
  節集合の充足可能性を判定するための方法として,Davis-Putnamの手続きがある.また,著者らはIEMSATと呼ばれる方法を提案し,Davis-Putnamの手続きとの密接な関係を明らかにしている.IEM-SATは0-1計画問題を解く一般的な方法である陰的列挙法に基づいたアルゴリズムである.一方,節を一般化したβ節といわれる節がある.β節とはその節中のβ個のリテラルが真であるとき,また,そのときに限り真となる節であり,β=1のとき通常の節と同じものになる.著者らは,既にβ節を用いることによって簡単に表現が可能な制約が存在することを示し,β節からなるβ節集合の充足可能性問題を解く方法としてIEMBSATを提案している.本稿では,IEMSATとDavis-Putnamの手続きとの密接な関係から,Davis-Putnamの手続きをβ節を扱う立場から見直しを行い,β節集合に対して適用可能となるような拡張を行う.また,β節の有効性について,最近注目されているGSATなどの局所探索法との比較実験などを通して検討する., 情報処理学会, Japanese
• β節充足可能性問題に対するDavis-Putnamの手続きの拡張 (文部省統計数理研究所S)
  山本雅人; 大柳俊夫; 大内東, 統計数理研究所共同研究リポート, 77, 1995
• A Procedure for Satisfiability Problems Based on the Partial Instantiation Technique
  YAMAMOTO Masahito; OHYANAGI Toshio; OHUCHI Azuma, The Transactions of the Institute of Electronics,Information and Communication Engineers. A, 77, 11, 1577, 1584, 25 Nov. 1994
  第1階述語論理式に関数記号が現れない場合には,その論理式の充足可能性を判定する手続きが存在する.そのような手続きとして,Robinsonの導出原理に基づく方法,ならびにJeroslowの部分例示に基づく方法などがある.本論文では,関数記号が現れない論理式が節形式で与えられた場合に適用可能な部分例示に基づく充足可能性判定手続きを提案する.この手続きは,Jeroslowの方法と同様に部分例示に基づくものであるが,扱う論理式が節形式であることを利用して,(1)命題論理の充足可能性問題を解く際にDavis-Putnamの方法を利用する,(2)論理式の拡大を節単位で行うことによって扱う論理式の急速な増大を抑える,(3)単一化を行う回数を減らす,ことなどを指向したものである.更に,Jeroslowの方法,導出原理に基づく方法との比較実験を行い,提案手法の有効性を示す., The Institute of Electronics, Information and Communication Engineers, Japanese
• ℬ SAT Algorithm based on Implicit Enumeration Method
  Ohyanagi, Toshio; Yamamoto, Masahito; Ohuchi, Azuma, 全国大会講演論文集, 48, 人工知能及び認知科学, 1, 2, 07 Mar. 1994
  命題論理の充足可能性問題(SAT)は, 情報処理の分野における基本的な問題の一つで, 現在まで多くの研究が行われている. 一方, SATの各節に量的な条件を加え, SATを一般化した一般化SAT問題(ℬ SATと呼ぶ)の研究が最近Hookerによって行われている. ℬ SATは, SATの各節で真となるリテラルが少なくとも1つであることを, 少なくともℬ個のリテラルが真となるような問題に一般化したものである. 本稿では, ℬ SATとその0-1整数計画問題への定式化, ならびにSATに対して著者らが提案した陰的列挙法に基づくアルゴリズム(IEMBSAT)をℬ SAT向きに見直したアルゴリズム(IEMBSAT)を提案する. また, ℬ SATをそれと等価なSATへ変換するアルゴリズムを示す., 情報処理学会, Japanese
• Empirical Evaluation of IEMSAT Algorithm
  YAMAMOTO, Masahito; OHYANAGI, Toshio; OHUCHI, Azuma, 全国大会講演論文集, 48, 人工知能及び認知科学, 3, 4, 07 Mar. 1994
  命題論理式の充足可能性問題(SAT)は, 情報処理の分野における基本的な問題の一つである. 著者らは, SATに対する解法としてIEMSATを提案している. IEMSATは, 0-1整数計画問題を解くための陰的列挙法に基づいたアルゴリズムである. さらに, 著者らはIEMSATとDavis-Putnamの方法との密接な関係も明らかにしている. 本稿では, IEMSATを様々な問題に適用することでその特徴および有効性を明らかにする., 情報処理学会, Japanese
• 部分例示手法を用いた定理自動証明手続き
  山本雅人; 大柳俊夫; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1994, 1994
• SAT Algorithm Based on Implicit Enumeration Method
  OHYANAGI Toshio; YAMAMOTO Masahito; OHUCHI Azuma, IPSJ Journal, 34, 12, 2464, 2473, 15 Dec. 1993
  The satisfiability problem (SAT) is one of well-known problems in the field of computer science. Many researchers in this field attempted to develop an algorithm for solving this problem. Among them Davis and Putnam succeeded to develop so-called Davis-Putnam method. Recently some researchers in the field of Operations Research applied mathematical programming theory to SAT. This approach intends to solve SAT by not symbolical computation but numerical one. This paper intends to propose new SAT algorithm based on implicit enumeration method that is one of algorithms for general O-1 integer programming problems. Furthermore, a detailed comparison between the proposed method and Davis-Putnum method is made. The result shows that the proposed method and Davis-Putnum method are closely related. Some computational experiences are also made to verify effectiveness of the proposed method. As a result, the method solved all the test problems faster than Davis-Putnam method and Kamath's method., Information Processing Society of Japan (IPSJ), Japanese
• A Procedure for Solving Satisfiability Problem Based on the Partial Instantiation Technique in the First-Order Logic
  Yamamoto, Masahito; Ohyanagi, Toshio; Ohuchi, Azuma, Bulletin of the Faculty of Engineering,Hokkaido University, 165, 165, p73, 82, Jul. 1993
  記事分類: 数学, 北海道大学 = Hokkaido University, Japanese
• On Relation between IE_SAT and DP
  OHYANAGI, Toshio; YAMAMOTO, Masahito; OHUCHI, Azuma, 全国大会講演論文集, 46, 人工知能及び認知科学, 11, 12, 01 Mar. 1993
  命題論理の充足可能性問題(SAT)は、情報処理の分野における基本的な問題の一つで、現在まで多くの研究が行われている。最近になって若者らは、0-1整数計画法の解法の一つである、陰的列挙法に基づくSATアルゴリズムを提案している。その方法は、SATを0-1整数計画問題として定式化した場合の特徴を利用して、陰的列挙法をSAT向きに見直したものであり、計算機実験の結果、良好な結果を得ている。本稿では、陰的列挙法に基づくSATアルゴリズムとSATに対する古典的な方法であるDavis-Putnamの方法を比較検討し、両者の関係を明らかにする。そしてその結果に基づき、陰的列挙法に基づくSATアルゴリズムを改良した方法を提案し、その有効性を計算機実験により示す。, 情報処理学会, Japanese
• 一般化SATに対する陰的列挙法の適用
  大柳俊夫; 山本雅人; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1993, 1993
• 部分例示手法に基づいた充足可能性判定手続き
  山本雅人; 大柳俊夫; 大内東, 電気関係学会北海道支部連合大会講演論文集, 1993, 1993
• On Quantitative Approach and Symbolic Approach for SAT
  Ohyanagi, Toshio; Yamamoto, Masahito; Kurihara, Masahito; Ohuchi, Azuma, 全国大会講演論文集, 45, 人工知能及び認知科学, 37, 38, 28 Sep. 1992
  命題論理の充足可能問題(SAT)は,情報処理の分野における基本的な問題の一つで,現在まで多くの研究が行われている.それらの研究は,Robinsonの導出原理に基づく記号的アプローチと,OR技法の一つである0-1整数計画法に基づく定量的アプローチに大別できるこれまでの記号的アプローチと定量的アプローチの関係に関する研究は,Dzvis-Putnam(DP)の方法と0-1整数計画法の対応,導出節と0-1整数計画法のカットの密接な関係,などの倫理的な議論と,計算機上の数値実験として,DPと分枝限定法および切除平面法との比較など行なわれている.しかし,記号的アプローチの中で最も有効と考えられるホーン緩和戦略と整数計画法の比較や,整数計画法のアルゴリズムのSAT向きの見直しなどはほとんど行われていない.最近著者らは,定量的アプローチの1つとして0-1整数計画問題に対する陰的列挙法をSAT向きに改訂した改訂陰的列挙法を提案している.本稿では,著者らが考案した改訂陰的列挙法の概略とそのインプリメンテーション方法について述べる.そして,改訂陰的列挙法とホーン緩和戦略の比較実験をランダム3-SATを用いて行った結果について報告する., 情報処理学会, Japanese
• A Quantitative Method for Logical Inference : A Framework and Its Applicability
  Ohuchi, Azuma; Ohyanagi, Toshio; Yamamoto, Masahito, 全国大会講演論文集, 44, 人工知能及び認知科学, 11, 11, 24 Feb. 1992
  論理推論の算法として導出原理に基づく記号的算法が,従来から広く使われている.これに対して,古典的命題論理の枠組みでは,数理計画法(MP)等を利用する定量的な方法が提案されている.本稿では,これまで行われている定量的方法に関する研究成果をまとめ,定量的方法の第一階述語論理や非古典論理に対する適用に関する今後の研究方向を示す., 情報処理学会, Japanese
• Transformation of SAT into Zero-one Integer Programming Problem
  Ohyanagi, Toshio; Yamamoto, Masahito; Ohuchi, Azuma, 全国大会講演論文集, 44, 人工知能及び認知科学, 13, 14, 24 Feb. 1992
  命題論理や第一階述語論理の充足可能性問題(SAT)は,情報科学の基本的な問題の一つであり,現在まで多くの研究が行われている.それらの研究は,Robinsonの導出原理に基づく方法とOR技法の一つである0-1整数計画法(0-1IP)を適用する方法に大別できる.これら2つのアプローチに共通する前提は,一般にSATが節形式で与えられることである.本論文では,命題論理のSATを節形式に変換せずに,直接0-1IP問題に変換するアルゴリズムを示す.そして,SATの充足可能性と0-1IP問題の整数制約を除き連続緩和した問題(LR問題)の解の間の関係を明らかにする.さらに,節形式に対するDavis-PutnamのアルゴリズムとLR問題を解く線形計画法の関係を示す., 情報処理学会, Japanese
• Extension of Jeroslow's method for satisfiability problem
  Yamamoto, Masahito; Ohyanagi, Toshio; Ohuchi, Azuma, 全国大会講演論文集, 44, 人工知能及び認知科学, 15, 16, 24 Feb. 1992
  第一階述語論理における充足可能性問題は,定理の自動証明などにおける基本的な問題の一つである.この充足可能性問題を解く手法として,Robinsonの導出原理に基づくものが数多く提案されている.これに対してJeroslowは,第一階述語論理の充足可能性問題を命題論理の充足可能性問題を利用して解く新しい手法を提案した.その手法は,関数記号を含まない場合にしか適用できないという欠点を持っている.本稿では,導出原理の考え方を取り入れ,この手法を関数記号を含む場合へ拡張する.その際,扱う論理式を節形式に限定するが,このことで一般性が失なわれることはない.また,この手法を用いた推論システム実現における問題点などについても述べる., 情報処理学会, Japanese