研究者データベース

研究者情報

マスター

アカウント(マスター)

  • 氏名

    山本 雅人(ヤマモト マサヒト), ヤマモト マサヒト

所属(マスター)

  • 情報科学研究院 情報理工学部門 複合情報工学分野

所属(マスター)

  • 情報科学研究院 情報理工学部門 複合情報工学分野

独自項目

syllabus

  • 2021, 情報メディアと観光, Information Media and Tourism, 修士課程, 国際広報メディア・観光学院, 情報メディア、観光、観光情報学、Web2.0、デジタルマーケティング、ビッグデータ、人工知能(AI)、ソーシャルメディア、サービスイノベーション、地図
  • 2021, 情報メディアと観光【履修証明プログラム】, Information Media and Tourism, 修士課程, 国際広報メディア・観光学院, 情報メディア、観光、観光情報学、Web2.0、デジタルマーケティング、ビッグデータ、人工知能(AI)、ソーシャルメディア、サービスイノベーション、地図
  • 2021, 自律系工学特論, Autonomous Systems Engineering, 修士課程, 情報科学研究科, 自律性,人工生命,力学系
  • 2021, 自律系工学特論, Autonomous Systems Engineering, 修士課程, 情報科学院, 自律性,人工生命,力学系
  • 2021, 自律系工学特論, Autonomous Systems Engineering, 博士後期課程, 情報科学研究科, 自律性,人工生命,力学系
  • 2021, 自律系工学特論, Autonomous Systems Engineering, 博士後期課程, 情報科学院, 自律性,人工生命,力学系
  • 2021, 統計学, Statistics, 学士課程, 全学教育, 平均,分散,標準偏差,確率変数,確率分布,母集団,標本,標本分布,点推定,信頼区間,仮説検定
  • 2021, 情報理工学実験Ⅰ, Experiment in Computer Science and Information Technology I, 学士課程, 工学部, プログラミング、計算機システム、データ解析技法
  • 2021, 計算機プログラミングⅡ, Computer Programming Ⅱ, 学士課程, 工学部, 計算機プログラミング、C言語、ポインタ、構造体、データ構造
  • 2021, 人工生命と進化型計算, Artificial Life and Evolutionary Computation, 学士課程, 工学部, 学習,進化,自己組織化,自律性,創発,オートポイエシス,フラクタル,セルオートマトン,ライフゲーム,ボイド,仮想生物

researchmap

プロフィール情報

学位

  • 博士(工学)(北海道大学)

プロフィール情報

  • 山本, ヤマモト
  • 雅人, マサヒト
  • ID各種

    200901088476337499

対象リソース

業績リスト

研究キーワード

  • 人工知能   メタヒューリスティクス   人工生命   複雑ネットワーク   観光情報学   

研究分野

  • 情報通信 / ヒューマンインタフェース、インタラクション
  • 情報通信 / データベース
  • 情報通信 / 感性情報学
  • 情報通信 / ソフトコンピューティング
  • 情報通信 / 生命、健康、医療情報学
  • 情報通信 / 知能ロボティクス
  • 情報通信 / 知覚情報処理
  • 情報通信 / 知能情報学

経歴

  • 2020年04月 - 現在 北海道大学 人間知・脳・AI研究教育センター兼務
  • 2019年04月 - 現在 北海道大学 大学院情報科学研究院 教授
  • 2018年04月 - 現在 公立はこだて未来大学 未来AI研究センター技術アドバイザー 兼務
  • 2012年12月 - 2019年03月 北海道大学 大学院情報科学研究科 教授
  • 2007年04月 - 2012年11月 北海道大学 大学院情報科学研究科 准教授
  • 2004年04月 - 2007年03月 北海道大学 大学院情報科学研究科 助教授
  • 2000年04月 - 2004年03月 北海道大学 大学院工学研究科 助教授
  • 2000年 - 2004年 Associate Professor
  • 2004年 - Associate Professor,Graduate School of Information Science and Technology, Hokkaido University
  • 1997年08月 - 2000年03月 北海道大学 大学院工学研究科 助手
  • 1997年 - 2000年 Research Associate
  • 1996年04月 - 1997年07月 日本学術振興会 特別研究員(PD)
  • 1996年 - 1997年 Postdoctoral Fellowships of Japan Society for the Promotion of Science,Post Doctoral Fellow, Japan Society for the Promotion of Science (JSPS)

委員歴

  • 2021年04月 - 現在   一般社団法人人工知能学会 人工生命研究会   運営委員
  • 2019年04月 - 現在   一般社団法人日本知能情報ファジィ学会   運営委員
  • 2018年04月 - 現在   一般社団法人情報処理学会 ゲーム情報学研究会   運営委員
  • 2015年06月 - 現在   観光情報学会   副会長
  • 2003年 - 現在   観光情報学会   理事   観光情報学会
  • 2022年03月 - 2024年02月   公益社団法人精密工学会   理事
  • 2020年01月 - 2020年12月   公益社団法人精密工学会 北海道支部   監事
  • 2018年04月 - 2020年03月   公益社団法人計測自動制御学会 スワームシステム部会   主査
  • 2019年01月 - 2019年12月   公益社団法人精密工学会 北海道支部   支部長
  • 2015年04月 - 2017年03月   日本オペレーションズ・リサーチ学会   北海道支部長
  • 2015年02月 - 2017年01月   計測自動制御学会   北海道支部長
  • 2012年 - 2016年   人工知能学会   知識ベースシステム研究会幹事   人工知能学会
  • 2013年04月 - 2015年03月   一般社団法人情報処理学会   北海道支部長
  • 2011年04月 - 2015年03月   精密工学会   広報情報部会・広報委員会員   精密工学会
  • 2012年02月 - 2015年01月   計測自動制御学会   北海道支部運営委員   計測自動制御学会
  • 2010年 - 2014年03月   情報処理学会   数理モデル化と問題解決研究会編集委員   情報処理学会
  • 2011年04月 - 2013年03月   日本機械学会   ロボティクス・メカトロニクス部門運営委員   日本機械学会
  • 2010年 - 2011年03月   精密工学会   北海道支部商議員   精密工学会
  • 2009年 - 2010年   情報処理学会   北海道支部幹事   情報処理学会
  • 2003年 - 2004年   情報処理学会   北海道支部幹事   情報処理学会

受賞

  • 2019年12月 2019 IEEE Symposium Series on Computational Intelligence 実行委員会 2019 IEEE SSCI ベストペーパー賞
     Analysis of Time Series Generated By Long Short-Term Memory Trained with Adversarial Imitation Learning 
    受賞者: 山嵜 聖也;飯塚 博幸;山本 雅人
  • 2018年12月 IES2018実行委員会 IES 2018 Best Paper Award
     Combined Method of YOLO and IOU Tracker for Tracking and Identifying Chimpanzee 
    受賞者: 池田 宥一郎;飯塚 博幸;山本 雅人
  • 2018年10月 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 
    受賞者: 山嵜 聖也,飯塚 博幸,山本 雅人
  • 2016年12月 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 
    受賞者: 斎藤 渉,横山 想一郎,飯塚 博幸,山本 雅人
  • 2016年12月 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 
    受賞者: 高田 圭,本庄 将也,飯塚 博幸,山本 雅人
  • 2015年10月 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 
    受賞者: 高田 圭,本庄 将也,飯塚 博幸,山本 雅人
  • 2015年03月 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 
    受賞者: 宮澤 初穂,飯塚 博幸,山本 雅人
  • 2014年12月 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 
    受賞者: 高田 圭,本庄 将也,飯塚 博幸,山本 雅人
  • 2013年12月 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 
    受賞者: 本庄将也. 山本雅人, 古川正志
  • 2013年10月 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 
    受賞者: 利根川凛. 山本雅人, 古川正志
  • 2011年12月 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 
    受賞者: 大江亮介, 鈴木育男, 山本雅人, 古川正志
  • 2011年12月 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 
    受賞者: 中村啓太, 鈴木育男, 山本雅人, 古川正志
  • 2011年12月 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 
    受賞者: 小笠原寛弥, 鈴木育男, 山本雅人, 古川正志
  • 2010年12月 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 
    受賞者: 岩根慎司, 鈴木育男, 山本雅人, 古川正志
  • 2010年 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 
    受賞者: 本庄将也;鈴木育男;山本雅人;古川正志
  • 2009年 情報処理学会北海道支部技術研究賞
  • 2008年 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
  • 2005年 情報処理北海道シンポジウム2005 奨励賞
  • 2004年 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
  • 2001年 人工知能学会JSAI賞(RoboCup Japan Open)
  • 2000年 人工知能学会JSAI賞(RoboCup Japan Open)

論文

  • Hayato Terao, Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    IEEE Access 1 - 1 2024年
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    2023 IEEE International Conference on Development and Learning (ICDL) 2023年11月09日
  • Junpei Horie, Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    Artificial Life and Robotics 28 1 148 - 157 2023年02月
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    The 2023 Conference on Artificial Life 2023年
  • Terao Hayato, Noguchi Wataru, Iizuka Hiroyuki, Yamamoto Masahito
    Machine Learning with Applications 9 100336 - 100336 2022年09月 [査読有り]
  • 野口 渉, 飯塚 博幸, 山本 雅人
    システム/制御/情報 66 4 139 - 144 2022年04月 [査読無し][招待有り]
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto, Shigeru Taguchi
    Scientific reports 12 1 2859 - 2859 2022年02月21日 
    Social cognition has received much attention in fields such as neuroscience, psychology, cognitive science, and philosophy. Theory-theory (TT) and simulation theory (ST) provide the dominant theoretical frameworks for research on social cognition. However, neither theory addresses the matter of how the concepts of "self" and "other" are acquired through the development of human and nonhuman agents. Here, we show that the internal representations of "self" and "other" can be developed in an artificial agent only through the simple predictive learning achieved by deep neural networks with the superposition mechanism we herein propose. That is, social cognition can be achieved without a pre-given (or innate) framework of self and other; this is not assumed (or is at least unclear) in TT and ST. We demonstrate that the agent with the proposed model can acquire basic abilities of social cognition such as shared spatial representations of self and other, perspective-taking, and mirror-neuron-like activities of the agent's neural network. The result indicates that the superposition mechanism we propose is a necessary condition for the development of the concepts of "self" and "other" and, hence, for the development of social cognition in general.
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    Advanced Robotics 36 1-2 85 - 99 2022年01月02日
  • Yasuhiro Shimada, Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    The 2022 Conference on Artificial Life 2022年
  • Hiroyuki Iizuka, Taiki Sasaki, Wataru Noguchi, Masahito Yamamoto
    The 2022 Conference on Artificial Life 2022年
  • Shuto Kuriyama, Wataru Noguchi, Hiroyuki Iizuka, Keisuke Suzuki, Masahito Yamamoto
    The 2022 Conference on Artificial Life 2022年
  • Naoaki Sakamoto, Koji Kobayashi, Teruko Yamamoto, Sakura Masuko, Masahito Yamamoto, Takahisa Murata
    Frontiers in behavioral neuroscience 16 797860 - 797860 2022年 
    Grooming is a common behavior for animals to care for their fur, maintain hygiene, and regulate body temperature. Since various factors, including stressors and genetic mutations, affect grooming quantitatively and qualitatively, the assessment of grooming is important to understand the status of experimental animals. However, current grooming detection methods are time-consuming, laborious, and require specialized equipment. In addition, they generally cannot discriminate grooming microstructures such as face washing and body licking. In this study, we aimed to develop an automated grooming detection method that can distinguish facial grooming from body grooming by image analysis using artificial intelligence. Mouse behavior was recorded using a standard hand camera. We carefully observed videos and labeled each time point as facial grooming, body grooming, and not grooming. We constructed a three-dimensional convolutional neural network (3D-CNN) and trained it using the labeled images. Since the output of the trained 3D-CNN included unlikely short grooming bouts and interruptions, we set posterior filters to remove them. The performance of the trained 3D-CNN and filters was evaluated using a first-look dataset that was not used for training. The sensitivity of facial and body grooming detection reached 81.3% and 91.9%, respectively. The positive predictive rates of facial and body grooming detection were 83.5% and 88.5%, respectively. The number of grooming bouts predicted by our method was highly correlated with human observations (face: r = 0.93, body: r = 0.98). These results highlight that our method has sufficient ability to distinguish facial grooming and body grooming in mice.
  • I3Dを用いたツシマヤマネコの発情兆候検出
    韓 靖威, 足立 樹, 小泉 那於, 野口 渉, 飯塚 博幸, 山本 雅人
    ロボティクス・メカトロニクス講演会2021 (ROBOMECH2021) 講演論文集 2021年06月 [査読無し]
  • カメラ画像を用いた深層学習による水族館の水透明度判定
    高 一, 佐藤 聡, 西村 究, 野口 渉, 飯塚 博幸, 山本 雅人
    ロボティクス・メカトロニクス講演会2021 (ROBOMECH2021) 講演論文集 2021年06月 [査読無し]
  • 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 2021年05月 [査読無し][招待有り]
  • Koji Kobayashi, Seiji Matsushita, Naoyuki Shimizu, Sakura Masuko, Masahito Yamamoto, Takahisa Murata
    Scientific reports 11 1 658 - 658 2021年01月12日 [査読有り]
     
    Scratching is one of the most important behaviours in experimental animals because it can reflect itching and/or psychological stress. Here, we aimed to establish a novel method to detect scratching using deep neural network. Scratching was elicited by injecting a chemical pruritogen lysophosphatidic acid to the back of a mouse, and behaviour was recorded using a standard handy camera. Images showing differences between two consecutive frames in each video were generated, and each frame was manually labelled as showing scratching behaviour or not. Next, a convolutional recurrent neural network (CRNN), composed of sequential convolution, recurrent, and fully connected blocks, was constructed. The CRNN was trained using the manually labelled images and then evaluated for accuracy using a first-look dataset. Sensitivity and positive predictive rates reached 81.6% and 87.9%, respectively. The predicted number and durations of scratching events correlated with those of the human observation. The trained CRNN could also successfully detect scratching in the hapten-induced atopic dermatitis mouse model (sensitivity, 94.8%; positive predictive rate, 82.1%). In conclusion, we established a novel scratching detection method using CRNN and showed that it can be used to study disease models.
  • 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 2021年01月 [査読有り][通常論文]
  • 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 2021年01月 [査読有り][通常論文]
  • 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 2020年02月 [査読有り]
  • 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 2020年01月 [査読有り][通常論文]
  • 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 2020年01月 [査読有り][通常論文]
  • Kenji Hirata, Hiroyuki Iizuka, Masahito Yamamoto
    2020 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII) 201 - 204 2020年 [査読有り]
     
    Reinforcement learning can be applied to various tasks such as developing motion controllers for humanoid or insect-like robots, playing board games and video games. However, reinforcement learning requires a large number of trials for learning appropriate behaviors in an environment that required physics simulations due to the computational costs of simulations. We propose a, model inspired by human brain simulation. The agent builds tie internal model based on the environment and trains in a simulated environment by the internal model in addition to training; in the actual environment. As a result, the agent acquires the walking movement with fewer trials.
  • Seiya Yamazaki, Hiroyuki Iizuka, Masahito Yamamoto
    2020 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII) 182 - 187 2020年 [査読有り]
     
    The bird song has a grammar. It is not random nor monotonous, but complex by combining several patterns. This combination rule like a grammar can be represented as the automaton. We have a hypothesis that the adversarial imitation learning, like a dilemma, plays a major role in the evolutionary processes for developing complex songs and the emergence of grammar. In our previous studies, we modeled this learning using a neural network and showed that this learning causes the complication of the generated bird song time series. However, it is difficult to observe the emergence of the grammar-like structure in the continuous-state neural network. In this paper, to show the complication of the discrete-symbol time series, and to emerge the grammar-like structure, we extend our previous model to the discrete model. The generated sequences and song dynamics are analyzed from various points of view, and the results show that the generated sequence is chaos, and it seems that the grammar-like structure emerges.
  • Hayato Terao, Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    ICVISP 2020: 4th International Conference on Vision, Image and Signal Processing(ICVISP) 14 - 6 2020年 [査読有り]
  • Seiya Yamazaki, Hiroyuki Iizuka, Masahito Yamamoto
    Artificial Life and Robotics 25 1 124 - 132 2020年 [査読有り][通常論文]
     
    Biological evolution produces complexity through genetic variations based on randomness. In conventional communication or language simulation models, genetic variations based on randomness and fitness function rewarding task achievements play an important role in evolving communication signals to complex ones. However, it is known that not only genetic variations evolve communication but also imitative learning during developmental processes contributes to the evolution of communication. What we investigated here was to find a different principle of generating complexity which does not rely on the randomness or external environmental complexity but only on the learning processes in communication. Our hypothesis is that the contradictory learning mechanism we call the adversarial imitation learning can work to increase the complexity without relying on the random processes. To investigate our hypothesis, we implemented the adversarial imitation learning on a simulation where two agents interact with and imitate each other. Our results showed that the adversarial imitation learning causes chaotic dynamics and investigating the learning results in different types of interaction between the two; it was clarified that the adversarial imitation learning is necessary for the emergence of the chaotic time series.
  • Seiya Yamazaki, Hiroyuki Iizuka, Masahito Yamamoto
    Proceedings of the 2019 IEEE Symposium Series on Computational Intelligence (IEEE SSCI 2019) 224 - 228 2019年12月 [査読有り][通常論文]
     
    Generally, birds gradually develop complicated songs by learning how to sing a song from each other. Thus, we assume that adversarial imitation learning (AIL) plays a major role in the development of complex songs and the emergence of syntax. In our previous work, we proposed an AIL using a recurrent neural network with Long Short-Term Memory to use historical information. Although the results shows that the generated time series gradually becomes complex on spatio-temporal dimensions through the AIL method, the generated time series has not been adequately analyzed. In this paper, we analyzed the generated time series with the maximum Lyapunov exponent, the zip compression and the visualization of internal state spaces. The results show that the generated time series is chaotic, which indicates syntax-like structures.
  • 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 2019年10月 [査読無し][通常論文]
  • Hiroyuki Iizuka, Yosuke Nakamoto, Masahito Yamamoto
    Proceedings of the Artificial Life Conference 2019 50 - 51 2019年07月 [査読有り][通常論文]
  • Wataru Noguchi, Hiroyuki Iizuka, Shigeru Taguchi, Masahito Yamamoto
    Proceedings of the Artificial Life Conference 2019 531 - 532 2019年07月 [査読有り][通常論文]
  • 3次元畳み込みニューラルネットワークを用いた店舗における顧客行動の分類
    貝塚 裕, 飯塚 博幸, 山本 雅人
    ロボティクス・メカトロニクス講演会2019 (ROBOMECH2019) 1A1-M05  2019年06月 [査読無し][通常論文]
  • 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 27 - 30 2019年03月 [査読無し][通常論文]
  • 不確定ゲームにおける深層強化学習による評価関数の獲得
    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 2019年03月 [査読無し][通常論文]
  • LSTM Autoencoderを用いた半教師あり学習による行動分類のための特徴ベクトル抽出手法
    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 2019年03月 [査読無し][通常論文]
  • Deep Q-Networkを用いたコミュニケーションシグナルの分化
    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 2019年03月 [査読無し][通常論文]
  • Masahito Yamamoto, Takashi Kawakami, Keitaro Naruse
    J. Robotics Mechatronics 31 4 519 - 519 2019年
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    Advanced Robotics 33 11 539 - 549 2019年 [査読有り][通常論文]
     
    A cognitive map is an internal model of the external world and contains the spatial representation of the surrounding environment. The existence of the cognitive map was first identified in rats; rats can navigate to their desired destination using cognitive maps while dealing with environmental uncertainty. We performed a mobile robot navigation experiment where obstacles were randomly placed using hierarchical recurrent neural network (HRNN) with multiple timescales. The HRNN was trained to navigate the mobile robot to the destination indicated by a snapshot image. After the training, the HRNN was able to successfully avoid the obstacles and navigate to the destination from any location in the environment. Analysis of the internal states of the HRNN showed that the module with fast timescale handles obstacle avoidance and the one with slow timescale has spatial representation corresponding to the spatial position of the destination. Moreover, in the experiment wherein the novel path appeared, the trained HRNN performed shortcut behavior. The shortcut behavior shows that the HRNN performed navigation using the self-organized spatial representation in the slow recurrent neural network. This indicates that training of goal-oriented navigation, i.e. the navigation motivated by a snapshot image of the destination results in the self-organization of cognitive map-like representation.
  • Kei Takada, Hiroyuki Iizuka, Masahito Yamamoto
    IEEE transactions on Games 12 1 63 - 73 2019年 [査読有り][通常論文]
     
    Recently, the use of reinforcement-learning algorithms has been proposed to create value and policy functions, and their effectiveness has been demonstrated using Go, Chess, and Shogi. In previous studies, the policy function was trained to predict the search probabilities of each move output by Monte Carlo tree search; thus, a number of simulations were required to obtain the search probabilities. We propose a reinforcement-learning algorithm with game of self-play to create value and policy functions such that the policy function is trained directly from the game results without the search probabilities. In this study, we use Hex, a board game developed by Piet Hein, to evaluate the proposed method. We demonstrate the effectiveness of the proposed learning algorithm in terms of the policy function accuracy, and play a tournament with the proposed computer Hex algorithm DeepEZO and 2017 world-champion programs. The tournament results demonstrate that DeepEZO outperforms all programs. DeepEZO achieved a winning percentage of 79.3% against the world-champion program MoHex2.0 under the same search conditions on $13 \times 13$ board. We also show that the highly accurate policy functions can be created by training the policy functions to increase the number of moves to be searched in the loser position.
  • Naohiro Shibuya, Hiroyuki Iizuka, Masahito Yamamoto
    2019 IEEE/SICE International Symposium on System Integration (SII2019) 764 - 769 2019年 [査読有り][通常論文]
     
    Social animals and insects in the natural world form swarm and show highly collective decision making and behaviors that a single entity cannot realize. In order to make decisions as a whole, such insects like honey bees communicate purely through behavioral interaction. In this paper, we simulated the group decision making process through behavioral interaction among simple robots in order to understand how the social animals and insects can make an agreement in a large group even they only have local communication. By reproducing the evolution of the decision making process, we clarify the possibilities how they make an agreement. In the simulation, the agents are required to move to a target zone that the majority of the agents prefer. The agents controlled by identical neural networks do not have communication device so that they must make an agreement through behavioral interaction. Our result shows that the agents made the correct decisions based on the majority rule through behavioral interaction. The group decision making process was differentiated into communicative and goal-directed. The analysis of the goal-directed process obtained indicates the agents solve the majority decision problem by clearly classifying behaviors by each preference.
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • カーリングとAI
    山本 雅人, 伊藤 毅志, 桝井 文人, 松原 仁
    情報処理学会誌「情報処理」 59 6 500 - 504 2018年06月 [査読無し][招待有り]
  • Kei Takada, Hiroyuki Iizuka, Masahito Yamamoto
    Proceedings - 2017 Conference on Technologies and Applications of Artificial Intelligence, TAAI 2017 196 - 201 2018年05月09日 [査読有り][通常論文]
     
    An evaluation function in the board game decides the next move for computer AIs, and a high accurate evaluation function leads to a strong computer AI. Recently, the evaluation function using convolutional neural network(CNN) by supervised learning shows high evaluation accuracy. Supervised learning cannot exceed the teachers, but there must be a possibility to create a more accurate evaluation function by using reinforcement learning. In this paper, we proposed an evaluation function using CNN and reinforcement learning with games of self-play in Hex. The proposed evaluation function is tested with the previous evaluation function and world-champion program MoHex2.0. The results show that evaluation accuracy of the proposed evaluation function is higher than the previous evaluation functions, and proposed computer Hex algorithm EZO-CNN obtained a win rate of 60.0% against MoHex2.0 even though the search time of EZO-CNN is shorter than MoHex2.0.
  • 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 2018年04月 [査読無し][招待有り]
  • Hiroya Nagata, Soichiro Yokoyama, Tomohisa Yamashita, Hiroyuki Iizuka, Masahito Yamamoto, Keiji Suzuki, Hidenori Kawamura
    J. Robotics Mechatronics 30 3 390 - 396 2018年 [査読有り]
     
    Proportional-integral-derivative (PID) controllers are a classical control algorithm that are still widely used owing to their simplicity and accuracy. However, tuning the three parameters is difficult. No methods have been known to determine the exact ideal combination of the P, I, and D gains. Moreover, controlling a system that contains dynamics changes over time using fixed parameters is difficult. A self-tuning neuro-PID controller is applied to a balloon robot for indoor entertainment to enhance its accuracy in following a target trajectory. Our experiment shows the effectiveness of the neuro-PID controller over conventional hand-tuned PID controller.
  • Kei Takada, Hiroyuki Iizuka, Masahito Yamamoto
    Communications in Computer and Information Science 818 19 - 33 2018年 [査読有り][通常論文]
     
    In recent years, a move evaluation model using a convolutional neural network (CNN) has been proposed for Go, and it has been shown that CNN can learn professional human moves. Hex is a two-player connection game, which is included in the Computer Olympiad. It is important to consider cell adjacency on the board for a better Hex strategy. To evaluate cell adjacency from various perspectives properly, we propose a CNN model that evaluates all candidate moves by taking as input all sets consisting of 3 mutually adjacent cells. The proposed CNN model is tested against an existing CNN model called “NeuroHex,” and the comparison results show that our CNN model is superior to NeuroHex on a 13×13 board even though our CNN model is trained on an 11×11 board. We also use the proposed model as an ordering function and test it against the world-champion Hex program “MoHex 2.0” on an 11×11 board. The results show that the proposed model can be used as a better ordering function than the ordering function created by minimax tree optimization, and we obtained a win rate of 49.0% against MoHex 2.0 (30 s/move).
  • 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年 [査読有り][通常論文]
  • 手話動作分類におけるRCNNモデルの性能評価と内部状態解析
    松田 啓佑, 飯塚 博幸, 山本雅人
    2018年度 人工知能学会全国大会 2631 - 2634 2018年 [査読無し][通常論文]
  • 畳み込みニューラルネットワークによるチンパンジーの個体識別
    池田 宥一郎, 飯塚 博幸, 山本雅人
    2018年度 人工知能学会全国大会(第32回) 93 - 95 2018年 [査読無し][通常論文]
  • Seiya Yamazaki, Hiroyuki Iizuka, Masahito Yamamoto
    Proceedings of the 2018 Conference on Artificial Life 659 - 664 2018年 [査読有り][通常論文]
     
    Bird song is one of the phenomena that increase in complexity through evolution. A complex song is known to be advantageous for survivability and birds are known to learn how to sing a song from each other. From these facts, we have a hypothesis that adversarial imitation learning plays a major role in the evolution process of a complex song. There is a previous study that demonstrates the complexation of a bird song time series by modeling the process of adversarial imitation learning using a logistic map. However, the real bird songs have much variety and time dependencies, like grammar. Therefore, in this study, adversarial imitation learning is modeled using an artificial neural network that can approximate any function. The network learns adversarial imitation using the gradient descent method. By making such changes, the results of our study show that the generated bird songs evolve through the process of adversarial imitation learning to chaos, as seen in the previous models.
  • Hiroyuki Iizuka, Yosuke Namamoto, Masahito Yamamoto
    Proceedings of the 2018 Conference on Artificial Life 179 - 185 2018年 [査読有り][通常論文]
     
    Swarms of birds and fish produce well-organized behaviors even though each individual only interacts with their neighbors. Previous studies attempted to derive individual interaction rules using heuristic assumptions from data on captured animals. We propose a machine learning method to obtain the sensorimotor mapping mechanism of individuals directly from captured data. Data on swarm behaviors in fish was captured, and individual positions are determined. The sensory inputs and motor outputs are estimated and used as training data. A simple feedforward neural network is trained to learn the sensorimotor mapping of individuals. The trained network is implemented in the simulated environment and resulting swarm behaviors are investigated. As a result, our trained neural network could reproduce the swarm behavior better than the Boids model. The reproduced swarm behaviors are evaluated in terms of three different measures, and the difference from the Boids model is discussed.
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    Proceedings of the 2018 Conference on Artificial Life 147 - 154 2018年 [査読有り][通常論文]
     
    Animals develop spatial recognition through visuomotor integrated experiences. In nature, animals change their behavior during development and develop spatial recognition. The developmental process of spatial recognition has been previously studied. However, it is unclear how behavior during development affects the development of spatial recognition. To investigate the effect of movement pattern (behavior) on spatial recognition, we simulated the development of spatial recognition using controlled behaviors. Hierarchical recurrent neural networks (HRNNs) with multiple time scales were trained to predict visuomotor sequences of a simulated mobile agent. The spatial recognition developed with HRNNs was compared for various values of randomness of the agent's movement. The experimental results show that spatial recognition was not developed for movements with a randomness that was too small or too large but for movements with intermediate randomness.
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • Naohiro Shibuya, Hiroyuki Iizuka, Masahito Yamamoto
    Artificial Life and Robotics 23 2 225 - 240 2017年12月 [査読有り][通常論文]
     
    Many studies have focused on the evolution of communication in artificial life, often presupposing dedicated communication channels such as voices or pheromones. However, it is plausible that only behavior existed when communication began and that some behaviors gradually evolved as a mean of communication. A study by Quinn has shown that communication can evolve purely through the behavior for two agents in a simulated environment. We extend this study to a more complex communication using three agents. In the simulation, the agents are equipped with two wheels and eight IR sensors and are controlled by identical neural networks. This network evolved by applying a genetic algorithm to a single population. After evolution, the agents' behaviors had differentiated into communicative and goal-directed types. We analyze the differences between these two types of behavior quantitatively, and show that the evolved behaviors have communication properties such as mutuality, information flow, and invariance of the motion gain.
  • Hiroya Nagata, Stefan Walke, Soichiro Yokoyama, Tomohisa Yamashita, Hiroyuki Iizuka, Masahito Yamamoto, Keiji Suzuki, Hidenori Kawamura
    Artificial Life and Robotics 23 2 192 - 199 2017年12月 [査読有り][通常論文]
     
    This project revolves around the combination of different state-of-the-art concepts to create balloon robots which can be used for entertainment purposes. The goal is having multiple robots perform a choreographed flight on preset paths to make use of the "dead space" over the crowd of an event, either as part of the show or displaying information and advertisements. As the balloon is flying on a defined trajectory, a tracking system for its position is needed. For this purpose, several infrared cameras monitor the position of a marker attached to the balloon. The main challenge is overcoming the instabilities of the system to ensure a smooth and precise flight, resulting from the balloons structure: the balloon is filled with helium to counteract the forces of gravity and, therefore, minimize the work needed to keep its momentum. Finding a way to achieve this optimization and the precision mentioned beforehand is the task that we will present and solve in this paper.
  • 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 2017年09月 [査読無し][招待有り]
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    ADAPTIVE BEHAVIOR 25 3 129 - 146 2017年06月 [査読有り][通常論文]
     
    Animals develop and use cognitive maps, which are internal models of the external environment, to understand the spatial characteristics of their natural environment. Previous studies have shown that a hierarchical structure of recurrent neural networks contributes to the extraction of high-level concepts in sequential sensorimotor experiences. However, the previous studies did not focus on the spatial aspects of these experiences and did not acquire cognitive maps. We modified previous models and trained the proposed model with the visuomotor experiences of an agent in a simulated two-dimensional environment. The proposed model was trained to predict future visual and motion inputs even when only one modality was provided (crossmodal prediction). The proposed model correctly predicted visual images, even when the agent experienced unknown paths. Comparisons of the crossmodal predictions of the models under different conditions revealed that the crossmodal predictions related to motion resulted in self-organization of the cognitive map. Further experiments of mental simulation abilities showed that two-way crossmodal predictions (from vision and motion only) were required for consistent generation of vision and motion. These results indicated that predictive learning involving integrated vision and motion was necessary for self-organization of spatial recognition with a cognitive map.
  • Zhuoran Xu, Hiroyuki Iizuka, Masahito Yamamoto
    SOFT COMPUTING 21 5 1327 - 1345 2017年03月 [査読有り][招待有り]
     
    Many real-world problems are multimodal, which means algorithms should have the ability to find all or most of the multiple solutions as opposed to a single best solution. Niching is the technique that can help evolutionary algorithms to find multiple solutions. Attraction basin sphere estimation (ABSE) is a newly proposed niching method which has the power of inferring the shape of fitness landscapes by spending some extra evaluations. However, when we apply ABSE to genetic algorithms, those extra evaluations lead to an efficiency problem. However, we notice that the combination of ABSE and covariance matrix adaptation evolution strategy will not cause the efficiency problem and have a good performance. This paper implements this idea and performs experiments on a benchmark set provided by CEC 2013 niching methods competition. The algorithm is compared with the best 5 algorithms in the competition. The results show that the proposed algorithm obtains a good result. The features of the proposed algorithm are also discussed in detail.
  • 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 2017年01月 [査読有り][通常論文]
  • 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年 
    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.
  • 小川 純, 飯塚 博幸, 山本 雅人
    精密工学会学術講演会講演論文集 2017 15 - 16 公益社団法人 精密工学会 2017年 
    異なる環境における物体追跡を目的とするソフトロボットの形状最適化を行う.ニューラルネットワークによりボクセルの生成及び物性を求め,ロボットを設計する.シミュレーションを用いて地上及び水中における物体追跡距離を最大化するロボット形状を学習する.異なる最適化条件を検証した結果,単一環境のみで最適化されたロボットより両環境におけるパレート最適化により得られたロボットの方が高い評価値を持つことを示した.
  • 杉中 出帆, 飯塚 博幸, 山本 雅人
    ロボティクス・メカトロニクス講演会講演概要集 2017 2P2 - F02 一般社団法人 日本機械学会 2017年 

    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.

  • 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講演概要集 2017 2A1 - G11 一般社団法人 日本機械学会 2017年 

    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.

  • Izuho Suginaka, Hiroyuki Iizuka, Masahito Yamamoto
    2017 21ST ASIA PACIFIC SYMPOSIUM ON INTELLIGENT AND EVOLUTIONARY SYSTEMS (IES) 95 - 100 2017年 [査読有り]
     
    Mobile robot localization has been considered to be an important task in the field of robotics research. It is known that it is difficult to estimate the self-position in dynamic environments where the positions of objects used as landmarks change. In this paper, we propose a robust method to estimate self-position from the first person view captured by a camera on a robot using Recurrent Convolutional Neural Networks (RCNN), which is a neural network model that has a convolutional architecture known as CNN with recurrent nodes. The RCNN receives images and directly estimates the positions of the robot. Our proposed method is evaluated in simulated environments. Our experiments show that RCNN model can estimate the self position of the robot with high accuracy even if some objects move to different positions, that is, it has a robustness against objects obstructing visibility.
  • Yosuke Nakamoto, Hiroyuki Iizuka, Masahito Yamamoto
    2017 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII) 847 - 852 2017年 [査読有り]
     
    The swarm of birds and fish produces the well organized behavior even though each individual is only interacting with neighbors. In order to form the swarm, there should be some rules that each individual is following. In this paper, we examine whether the neural network can learn the individual behavioral rules and reproduce the swarm behavior. In the experiment, boids swarm and real fish swarm are used for the target of learning and reproduction. As a result, the neural network could learn and reproduce the behavior almost perfectly for the boids swarm, and partially for the real fish swarm.
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    FOURTEENTH EUROPEAN CONFERENCE ON ARTIFICIAL LIFE (ECAL 2017) 324 - 331 2017年 [査読有り]
     
    Spatial recognition is the ability to recognize the environment and generate goal-directed behaviors, such as navigation. Animals develop spatial recognition by integrating their subjective visual and motion experiences. We propose a model that consists of hierarchical recurrent neural networks with multiple time scales, fast, medium, and slow, that shows how spatial recognition can be obtained from only visual and motion experiences. For high-dimensional visual sequences, a convolutional neural network (CNN) was used to recognize and generate vision. Our model, which was applied to a simulated mobile agent, was trained to predict future visual and motion experiences and generate goal-directed sequences toward destinations that were indicated by photographs. Due to the training, our model was able to achieve spatial recognition, predict future experiences, and generate goal-directed sequences by integrating subjective visual and motion experiences. An internal state analysis showed that the internal states of slow recurrent neural networks were self-organized by the agent's position. Furthermore, such representation of the internal states was obtained efficiently as the representation was independent of the prediction and generation processes.
  • Sohtaroh Saitoh, Hiroyuki Iizuka, Masahito Yamamoto
    INTELLIGENT AND EVOLUTIONARY SYSTEMS, IES 2016 8 361 - 369 2017年 [査読有り][通常論文]
     
    Perceptual Crossing experiment is the method for analyzing human interaction with low degrees of freedom of perception and motion. In this experiment, participants need to establish a cooperative interaction to achieve a task. In this study, we introduce time delays of participant's perception in this experiment, and evaluate the stability of human social interaction against the time delay. Our result shows that human social interactions have the stability against the time delays by changing their behaviors adaptively. We also investigate if the stability can be enhanced by modulating the participant's behavior conversely. It is shown that it is possible to increase the stability of social interaction by slowing down behaviors of participants.
  • 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年 [査読有り][通常論文]
  • 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 2016年11月 [査読有り][通常論文]
  • 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 2016年06月 [査読有り][通常論文]
     
    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.
  • Wataru Noguchi, Hiroyuki Iizuka, Masahito Yamamoto
    BICT 2015 - 9th EAI International Conference on Bio-Inspired Information and Communications Technologies 3 10 e1  2016年05月24日 [査読有り][通常論文]
     
    We propose an architecture of neural network that can learn and integrate sequential multimodal information using Long Short Term Memory. Our model consists of encoder and decoder LSTMs and multimodal autoencoder. For integrating sequential multimodal information, firstly, the encoder LSTM encodes a sequential input to a fixed range feature vector for each modality. Secondly, the multimodal autoencoder integrates the feature vectors from each modality and generate a fused feature vector which contains sequential multimodal information in a mixed form. The original feature vectors from each modality are re-generated from the fused feature vector in the multimodal autoencoder. The decoder LSTM decodes the sequential inputs from the regenerated feature vector. Our model is trained with the visual and motion sequences of humans and is tested by recall tasks. The experimental results show that our model can learn and remember the sequential multimodal inputs and decrease the ambiguity generated at the learning stage of LSTMs using integrated multimodal information. Our model can also recall the visual sequences from the only motion sequences and vice versa.
  • Ryo Nishimura, Hiroyuki Iizuka, Masahito Yamamoto
    BICT 2015 - 9th EAI International Conference on Bio-Inspired Information and Communications Technologies 3 9 e3 - YM003440 2016年05月24日 [査読有り][通常論文]
     
    Social interaction is the basic ability for animals to survive. It is difficult for a machine to interact with human or other animals because it is not clear how the machine should interact. This paper examines whether an artificial dot controlled by a machine can interact with a medaka and induce a desired behavior. The dot is displayed on a monitor. We use deep Q network (DQN) to learn how to move the dot. As a result, the DQN could learn some basic elements to interact with the medaka and the desired behavior could be induced.
  • 齋藤 健太郎, 飯塚 博幸, 山本 雅人
    精密工学会学術講演会講演論文集 2016 575 - 576 公益社団法人 精密工学会 2016年 
    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.
  • Sohtaroh Saitoh, Hiroyuki Iizuka, Masahito Yamamoto
    Intelligent and Evolutionary Systems - The 20th Asia Pacific Symposium(IES) 361 - 369 2016年
  • 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 日本知能情報ファジィ学会 2016年 [査読有り][通常論文]
     
    近年注目されている実数値最適化手法の一つに粒子群最適化(Particle Swarm Optimization, PSO)がある.PSOは群知能の一種であり,複数の探索単位(粒子)が互いに情報共有を行いながら解の探索を行う.多点探索を行うメタヒューリスティクスとしては遺伝的アルゴリズム(Genetic Algorithm, GA)が有名であるが,多くの実数値最適化問題においてPSOのほうがGAに比べて高速に良い解を発見できることが知られている.本研究では,組合せ最適化問題の一種である巡回セールスマン問題(Traveling Salesman Problem, TSP)に対して短時間で良い解を得ることを目的として,PSOを基にしたアルゴリズムである挿入操作PSO戦略を提案する.提案手法では,粒子の解候補は実数値ベクトルではなく巡回路として表現され,粒子間の相互作用は部分経路挿入によって行われる.本論文では,挿入操作PSO戦略について説明し,数値計算実験からパラメータと得られる解の良さと必要な時間の関係について調査し,パラメータ調整の指針を示す.また,各ベンチマーク問題に対して提案手法とGAなどの代表的なメタヒューリスティクスを適用し,提案手法がこれらの手法より短時間で良い解を求められることを示す.
  • Jun Ogawa, Hiroyuki Iizuka, Masahito Yamamoto, Masashi Furukawa
    Journal of Robotics and Mechatronics 28 1 40 - 49 2016年 [査読有り][通常論文]
     
    We discuss novel approaches to the control of seaweed tangle formations in stirrer cultivation. Cultivating seaweed is one important way to avoid such formation. Because defining such formation is difficult based on human recognition alone, there is currently no quantitative evaluation criterion for formation. We develop physical simulation for analyzing formations in a water flow field and model three factors – physical, geometric and time – for characterizing formations. Our criterion is that formations are created by using these factors as input to a nonlinear support vector machine. To show the effectiveness of our simulation and criteria, we confirm the control effects of the water flow in simulation and the real world. Results show that our simulation model is useful for avoiding such formation in the real world.
  • Jun Ogawa, Hiroyuki Iizuka, Masahito Yamamoto, Masashi Furukawa
    INTELLIGENT AUTONOMOUS SYSTEMS 13 302 821 - 830 2016年 [査読有り][通常論文]
     
    This paper describes new approaches for classifying twist of seaweeds. There are no evaluation measures of the twist formation of complicated objects quantitatively because the definition of a qualitative twist is a difficult problem. The twist of seaweeds is one of these problems. In this paper, we propose three factors (physical, geometric, and time factor of twist) for characterizing the twist state, and we develop the twist-state classifier based on these factors. Additionally, the analysis experiment verifies how the classifier shows the classification accuracy of twist state.
  • 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) 2015年12月 [査読有り][通常論文]
  • 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) 2015年12月 [査読有り][通常論文]
  • 高田 圭, 本庄, 将也, 飯塚, 博幸, 山本 雅人
    Transactions of the Japanese Society for Artificial Intelligence 30 6 729 - 736 2015年10月27日 [査読有り][通常論文]
     
    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 putting their pieces in turn on empty cells of the board. A player wins if the player connects the two opposing sides of the board with their own color pieces. Our previous study clarified that it is effective to develop a computer Hex strategies with the network characteristics as the evaluation function to evaluate the board states from the global and local perspectives and showed that there is the best parameter to decide the ratio between global and local evaluation during a match. In order to go beyond the strategy, we hypothesize that the ratio must change during a match depending on the board states as human players differently evaluate the board states at the beginning, middle and final stages. First, we examine the hypothesis whether the better wining rate can be achieved by changing the ratio of global and local evaluation and propose a novel computer Hex program that can evaluate the board states while changing the global and local evaluation by recognizing the board states with SVM. Our proposed method is evaluated with the current world-champion program called MoHex.
  • 南 賢一, 飯塚, 博幸, 古川, 正志, 山本 雅人
    Transactions of the Japanese Society for Artificial Intelligence 30 6 737 - 744 2015年10月27日 [査読有り][通常論文]
     
    The distribution center became more important because the growth of the internet enabled us to buy various products easily on the Internet. In the distribution center, one of the main works is order picking which is to carry the products from shelves of the warehouse according to the orders received from customers. Efficient order picking reduces the large amount of work and the improvement of the order picking is necessary in a larger distribution 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 distribution center. It is known that it is effective to consider frequency order and frequency of co-occurrence at the same time for storage location assignment. The conventional studies proposes the class-based method for frequency order and evaluation function to evaluate frequency order and co-occurrence of orders at the same time. This study proposes a novel method how to assign products to the storage using a co-occurrence network of ordered products and self-organizing map on network topology of the warehouse. Our proposed method is compared with the conventional studies and our experiments show that our proposed method can be more effective than the conventional methods.
  • Hiroyuki Iizuka, Sohtaroh Saitoh, Davide Marocco, Masahito Yamamoto
    HAI 2015 - Proceedings of the 3rd International Conference on Human-Agent Interaction 217 - 219 2015年10月21日 [査読有り][通常論文]
     
    This paper investigates time-delay effects of the human social interaction to understand how human can adapt to the time delay, which will be required in software agents to establish a harmonic interaction with human. We performed the minimal experiments of social interaction called perceptual crossing experiments with time delay. Our result shows that the social interaction breaks down when the total amount of time delay is given more than about one second. However, the interaction breaks more easily when the time delay is given to both participants than to either participant.
  • Hiroyuki Iizuka, Sohtaroh Saitoh, Davide Marocco, Masahito Yamamoto
    HAI 2015 - Proceedings of the 3rd International Conference on Human-Agent Interaction 217 - 219 2015年10月21日 [査読有り][通常論文]
     
    This paper investigates time-delay effects of the human social interaction to understand how human can adapt to the time delay, which will be required in software agents to establish a harmonic interaction with human. We performed the minimal experiments of social interaction called perceptual crossing experiments with time delay. Our result shows that the social interaction breaks down when the total amount of time delay is given more than about one second. However, the interaction breaks more easily when the time delay is given to both participants than to either participant.
  • 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 2015年10月 [査読有り][通常論文]
  • 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 2015年10月 [査読有り][通常論文]
  • 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 2015年10月 [査読有り][通常論文]
  • Yasumasa Tamura, Hiroyuki Iizuka, Masahito Yamamoto, Masashi Furukawa
    SOFT COMPUTING 19 4 891 - 899 2015年04月 [査読有り][通常論文]
     
    This study focuses on the reactive scheduling in manufacturing systems. In practical situations, the predetermined schedule often changes under the influence of the unpredictable or variable environment in the factory. The reactive scheduling (RS) is a methodology to modify the predetermined schedule to cope with variable situations without suspending the proceeding of the processes on the schedule. Therefore, the RS requires a method to improve the schedule with fast computational time. To obtain an effective method for the RS, this paper proposes a novel RS method using local clustering organization. Also, this paper examines its effectiveness by a numerical experiment. Our results suggest that the proposed method is more effective than the method using genetic algorithm.
  • 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年 
    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。
  • 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年 
    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.
  • 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年 
    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.
  • Soichiro Yokoyama, Hiroyuki Iizuka, Masahito Yamamoto
    JACIII 19 6 892 - 899 2015年 [査読有り][通常論文]
  • Tamura Yasumasa Iizuka Hiroyuki, Yamamoto Masahito
    Proceedings of the 18th Asia Pacific Symposium on Intelligent and Evolutionary Systems 2 465 - 477 2015年 [査読有り][通常論文]
     
    Job-shop scheduling problem(JSP) is one of the hardest combinatorial optimization problems. Local clustering organization (LCO) is proposed by Furukawa et al. to solve such a combinatorial optimization problems as the metaheuristic algorithm. Its effectiveness for the JSP is verified by the comparison with genetic algorithm. However, since LCO is based on the greedy search, the solution is often trapped in local minima. To improve the problem, this study proposes a novel neighborhood search method using priority rules. This paper also shows the extended LCO integrated with the search method.
  • Masahito Yamamoto, Shu Kato, Hiroyuki Iizuka
    2015 IEEE CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND GAMES (CIG) 474 - 480 2015年 [査読有り][通常論文]
     
    Strategy for digital curling based on the game tree search is demonstrated. Digital curling has been developed for simulating curling which is one of the winter sports. We present a curling playing program run on the digital curling simulator. It enable us to decide the direction and the speed of the stone to be delivered for maximizing the evaluation values of resultant game states. The novel evaluation function is constructed and the effective method for reducing the simulation trials is proposed for finding the best shot on the current game state. Our experimental results reveal that our proposed program outperforms the previous rule-based program and competes with the MonteCarlo based program.
  • Iizuka Hiroyuki, Nakai Hiroki, Yamamoto Masahito
    Proceedings of the European Conference on Artificial Life 2015 264 - 270 2015年 [査読有り][通常論文]
     
    A robot implemented with a homeostatic neural controller can adapt to disruptions that have not been experienced before. When novel changes occur, the homeostatic neural controller autonomously detects the disruptions from their behaviors and recreates new motions to achieve desired behaviors. In previous studies, the homeostatic neural controller has been only applied to a robot with a simple structure, i.e. wheeled robots which are controlled by adjusting the outputs of wheel motors. It is not clear whether the homeostatic neural controller can work properly when it is applied to a robot with a more complex structure. Therefore, we implement the homeostatic neural controller onto the multi-legged robot and investigate adaptivity. As a result, the robot with the homeostatic neural controller recreates new motion patterns to achieve a desired behaviors after novel disruptions that break a leg.
  • Kei Takada, Masaya Honjo, Hiroyuki Iizuka, Masahito Yamamoto
    ADVANCES IN COMPUTER GAMES, ACG 2015 9525 235 - 246 2015年 [査読有り][通常論文]
     
    The game of Hex was invented in the 1940s, and many studies have proposed ideas that led to the development of a computer Hex. One of the main approaches developing computer Hex is using an evaluation function of the electric circuit model. However, such a function evaluates the board states only from one perspective. Consequently, it is recently defeated by the Monte Carlo Tree Search approaches. In this paper, we therefore propose a novel evaluation function that uses network characteristics to capture features of the board states from two perspectives. Our proposed evaluation function separately evaluates the board network and the shortest path network using betweenness centrality, and combines the results of these evaluations. Furthermore, our proposed method involves changing the ratio between global and local evaluations through a support vector machine (SVM). So, it yields an improved strategy for Hex. Our method is called Ezo. It was tested against the world-champion Hex program MoHex. The results showed that our method was superior to the 2011 version of MoHex on an 11 x 11 board.
  • Soichiro Yokoyama, Hiroyuki Iizuka, Masahito Yamamoto
    Journal of Advanced Computational Intelligence and Intelligent Informatics 19 6 892 - 899 2015年 [査読有り][通常論文]
     
    The heuristic method we propose solves the flexible job-shop scheduling problem (FJSP) using a solution construction procedure with priority rules. FJSP is more complex than classical scheduling problems in that operations are processed on one of multiple candidate machines, one of which must be selected to get a feasible solution. The solution construction procedure with priority rules is implemented on top of the efficient existing method for solving the FJSP which consists of a genetic algorithm and a local search method. The performance of the proposed method is analyzed using various benchmark problems and it is confirmed that our proposed method outperforms the existing method on problems with particular conditions. The conditions are further investigated by applying the proposed method on newly created benchmark.
  • Yasumasa Tamura, Hiroyuki Iizuka, Masahito Yamamoto, Masashi Furukawa
    Soft Computing 19 4 891 - 899 2015年 [査読有り][招待有り]
     
    This study focuses on the reactive scheduling in manufacturing systems. In practical situations, the predetermined schedule often changes under the influence of the unpredictable or variable environment in the factory. The reactive scheduling (RS) is a methodology to modify the predetermined schedule to cope with variable situations without suspending the proceeding of the processes on the schedule. Therefore, the RS requires a method to improve the schedule with fast computational time. To obtain an effective method for the RS, this paper proposes a novel RS method using local clustering organization. Also, this paper examines its effectiveness by a numerical experiment. Our results suggest that the proposed method is more effective than the method using genetic algorithm.
  • Zhuoran Xu, Hiroyuki Iizuka, Masahito Yamamoto
    Artificial Life and Robotics 19 4 317 - 327 2014年12月10日 [査読有り][通常論文]
     
    In our previous work, we proposed a niching genetic algorithm: attraction basin sphere estimating genetic algorithm (ABSEGA). It can detect and recognize attraction basin spheres on a fitness landscape. Attraction basin spheres are used to improve the performance of niching. However, ABSEGA does not work well on Neuroevolution problems, because those problems are usually high dimensional and have numerous local optima. In this paper, we calculate the height of valleys to improve the niching results. The height is used to determine if an optimum is important, so we can track important optima even among hundreds of unimportant optima. We examine our method in a robotic arm problem, in which we evolve an artificial neural network to control the arm to catch balls. The results show that our method has a high ability to escape local optima and find relatively better solutions.
  • Jun Ogawa, Masahito Yamamoto, Masashi Furukawa
    Journal of Advanced Computational Intelligence and Intelligent Informatics 18 5 823 - 829 2014年09月01日 [査読有り][通常論文]
     
    In the optimization of seaweed cultivation now being extensively researched, a problem arises in avoiding twisting seaweed. Twisting is a complex phenomenon and difficult to formulate. Producing the optimal water flow, requires calculating the risk of twisting occurring. In this paper, we propose a method to calculate and estimate the twist state based on the results of physical simulation. We devise a seaweed model using multiple rigid bodies that mutually and physically interfere. One result of physical interference, is that the model has two internal state variables - contact time and the number of contact points between individual pieces of seaweed. We introduce an evaluation function to quantify twisting using these state variables in each time step, and propose a way to calculate twist risk based on the von Neumann and Laplacian diffusion kernels, in a dynamic network.
  • 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 2014年02月18日 [査読有り][通常論文]
     
    A heuristic method for solving flexible job-shop scheduling problem (FJSP) is proposed. FJSP is more complex than classical scheduling problems in that operations are processed on one of multiple candidate machines and one of them must be selected to obtain a feasible solution. The proposed method utilizes a solution improvement procedure with priority rules. This procedure is implemented on top of the efficient existing method for the FJSP which consists of genetic algorithm and local search method. The performance of the proposed method is analyzed on various benchmark problems. As a result, it is confirmed that the proposed method outperforms the existing method on problems with particular conditions while its average performance does not match the state-of-the-art algorithm.
  • 三上 剛, 米澤 一也, 小島 洋一郎, 山本 雅人
    インテリジェントシステム・シンポジウム講演論文集 2014 24 42 - 45 日本機械学会 2014年 [査読有り][通常論文]
  • 横山 想一郎, 飯塚, 博幸, 山本 雅人
    日本オペレーションズ・リサーチ学会秋季研究発表会アブストラクト集 2014 68 - 69 2014年 [査読有り][通常論文]
  • Ryota Kato, Hiroyuki Iizuka, Masahito Yamamoto
    2014 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII) 112 - 117 2014年 [査読有り][通常論文]
     
    This paper shows the different types of swarm behaviors of simulated flapping birds obtained in our simulation. The individual birds are modeled in the physical virtual environment and flying by flapping. The evolutionary method is applied to obtain how to fly as an individual. After the evolution, the multiple birds interact with each other with Kuramoto model while flying at the same time. Our result shows the top-down regulation from the shape of formations to the individual behaviors. The regulation changes individual objectives to the globally determined objectives due to the entrainment caused by Kuramoto model.
  • 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年 [査読有り][通常論文]
     
    Insertion-based Particle Swarm Optimization (IPSO) is an optimization method for Traveling Salesman Problem (TSP) s. IPSO can find a better solution in a short time compared with Simulated Annealing (SA) and Genetic Algorithm (GA). In order to find a near optimal solution, we propose IPSOLB by improving IPSO. IPSOLB is based on the local version of PSO. In this method, a particle is affected by its neighbor particles instead of the whole population. As a result of this modification, agents are not converged immediately on the best solution obtained so far, and the population maintains various candidate solutions. For this reason, in comparison with IPSO, IPSOLB can be expected to search a solution while avoiding local optimum solutions. Through numerical experiments, it is shown that the proposed method can find a better solution than IPSO in reasonable time.
  • 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 31 1 13 - 18 医用画像情報学会 2014年 [査読有り][通常論文]
     
    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.
  • Soichiro Yokoyama, Hiroyuki Hzuka, Masahito Yamamoto
    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING 8 5 8 - 5 2014年 [査読有り][通常論文]
     
    We propose an efficient heuristic method for job-shop scheduling problems (JSP) with the objective of total weighted tardiness minimization The proposed method uses schedule reconstructions by priority rules to guide a local search towards promising solutions. Typically priority rules determine the whole schedule and thus incorporating it with local search procedure is difficult. In our proposed method, a priority rule decides a schedule within an arbitrary selected time window and the rest of the schedule is determined by the schedule obtained by a conventional local search method. The priority rule is given by a linear combination of simple priority rules. To improve a schedule efficiently, an appropriate set of time window and gains of the linear combined priority rule is required. Therefore, we optimize the set of time window and rule gains with genetic algorithm This rule-based reconstruction procedure and the conventional local search procedure are alternately applied to a current solution. In the experiments, the efficiency of rule-based reconstruction procedure is verified and the proposed method is compared with one of the most effective existing methods. The results show that the proposed method outperforms the existing method on large problems with sufficient computational time. The average performance is particularly improved due to the ability of rule-based reconstruction procedure to escape from local optima of the conventional local search procedure efficiently.
  • Kenji Iwadate, Ikuo Suzuki, Michiko Watanabe, Masahito Yamamoto, Masashi Furukawa
    Advances in Intelligent Systems and Computing 270 143 - 151 2014年 [査読有り][通常論文]
     
    In the last decade, artificial intelligence (AI) pervades every aspect of our lives. However, there is a gap between AI-based machine behavior and human in natural communication. The behavior of most AI is determined as a task list generated by engineers, but to obtain high-level intelligence, AI needs the ability to cluster tasks from circumstances and learn a strategy for achieving each task. In this study, we focus on the human brain architecture that gives it the ability to self-organize and generalize sensory information. We propose an Artificial Neural Network (ANN) model based on that architecture. We describe a cerebellum-based ANN model (C-ANN) and verify its capacity to learn from the phototaxic behavior acquisition of a simple two-wheeled robot. As a result, the controller of the robot is self-organized to be simple and able to achieve positive phototaxis. This result suggests that the proposed C-ANN model has the capability of supervised learning.
  • 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) 2013年12月 [査読有り][通常論文]
  • 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) 2013年11月 [査読有り][通常論文]
  • 松原 仁, 山本, 雅人, 川村, 秀憲, 鈴木 恵二
    システム/制御/情報 : システム制御情報学会誌 = Systems, control and information 57 8 316 - 322 システム制御情報学会 2013年08月15日 [査読有り][通常論文]
  • 松原 仁, 山本 雅人, 川村 秀憲, 鈴木 恵二
    システム/制御/情報 : システム制御情報学会誌 57 8 316 - 322 システム制御情報学会 2013年08月15日 [査読無し][通常論文]
  • 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 公益社団法人 精密工学会 2013年06月05日 [査読有り][通常論文]
     
    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.
  • 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 計測自動制御学会 2013年03月10日 [査読無し][通常論文]
  • Ryosuke Ooe, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2 194 863 - 871 2013年 [査読有り][通常論文]
     
    This paper proposes a composite artificial neural network (CANN). The CANN is a method that contains concepts of an evolutionary artificial neural network, a neural network ensemble and subsumption architecture, and designed for efficient robot control. In the CANN, while low-level ANNs work as actual controllers for calculating outputs, a high-level work as a selector. The high-level ANN works up some optimized ANNs, which output real values, into a controller. In order to verify performance of the CANN, numerical experiments are carried out. An artificial flying creature (AFC) is controlled by the CANN for flying to a target point. Motions of the AFC is calculated by a virtual physics environment, which consists of functions of a physical engine PhysX and a simple drag force calculation. Experimental results show that performance of the CANN is higher than that of a simple ANN.
  • Yuta Umemura, Masahito Yamamoto, Ikuo Suzuki, Masashi Furukawa
    INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2 194 775 - 783 2013年 [査読有り][通常論文]
     
    We have studied about ground behavior on the locust model under the virtual physical environment. In the previous study, the locust model acquires jumping behavior by use of neuro-evolution. However, a real locust often uses the jumping and walking behavior more flexibility. In this study, we realize the jumping and walking behavior for the same locust model. Both of those behavior are trained by use of neuro-evolution which is composed of artificial neural network(ANN) and real-coded genetic algorithm(RCGA). We analyze the obtained jumping and walking behavior and show the possibility to acquire flexible behavior.
  • Yasumasa Tamura, Masahito Yamamoto, Ikuo Suzuki, Masashi Furukawa
    JACIII 17 5 731 - 738 2013年 [査読有り][通常論文]
  • Soichiro Yokoyama, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012 345 - 350 2013年 [査読有り][通常論文]
     
    The Traveling Salesman Problem (TSP) is one of the most well known combinatorial optimization problem and has wide range of application. Since the TSP is NP-hard, many heuristics for the TSP have been developed. This study proposes a new heuristic for the TSP based on one of these heuristics named Local Clustering Optimization (LCO). LCO is a metaheuristic proposed by Furukawa at el. to give an accurate solution for large scale problems in a reasonable time. However, conventional LCO-based heuristics for the TSP is not suited to solving asymmetric instances. The proposed method iteratively adopts tour construction heuristics such as nearest neighbor and random insertion to get an accurate solution more efficiently for the both asymmetric and symmetric TSP. The proposed method and other heuristics are applied to benchmark instances from TSPLIB and randomly generated instances. The experiment shows the proposed method is superior to conventional LCO in terms of accuracy of the solution. However; the proposed method is inefficient for instances which are not close to Euclidean due to the same property of insertion heuristic.
  • 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 21 - 26 2013年 [査読無し][通常論文]
  • 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 283 - 284 2013年 [査読無し][通常論文]
  • 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年 [査読有り][通常論文]
     
    Cultivation of marine plants is remarkable in the field of energy development. Physical simulation on computer is convenient for the analysis of the motion of marine plant populations. This is a practical approach in terms of cost in order to design the optimal cultivation system, device and environment. Our study aims to elucidate physics phenomenon in a large cultivation system of marine plants and provide new engineering insights into cultural techniques. This paper describes how to model the physical motion of marine plant populations which is cultivated under the high volume fraction. It is possible to consider the physical interference by representing the plant with rigid bodies and using physics engine. Our proposed modeling method keeps filling plant models while avoiding overlaps between the models in an interior of three-dimensional mesh structure object in order to reduce the error of physics calculation when handling many rigid bodies. A fluid environment is constructed by Lattice Boltzmann method in the virtual space. The dynamics of marine plant is approximated by applying buoyancy and drag force. Results show that the plant populations moves with fluid velocity while causing the adhesion between individuals.
  • Zhuoran Xu, Mikko Polojärvi, Masahito Yamamoto, Masashi Furukawa
    GECCO 2013 - Proceedings of the 2013 Genetic and Evolutionary Computation Conference Companion 131 - 132 2013年 [査読有り][通常論文]
     
    Radii-based niching evolutionary algorithms are criticized for the difficulty of the proper choice of the radius parameter. Detect-multimodal method enables the identification of niches without an explicit user-defined radius parameter. Although robust, the detect-multimodal method based algorithms are computationally expensive. We propose a novel algorithm called Attraction Basin Estimating Genetic Algorithm (ABE), which estimates the radius parameter based on the detect-multimodal method and uses the estimated radius to identify niches. Our experiments demonstrate that ABE has a similar ability to solve the multimodal optimization problem as Topological Species Conservation algorithm which is based on the detect-multimodal method, but much more efficiently.
  • Jun Ogawa, Masahito Yamamoto, Ikuo Suzuki, Masashi Furukawa
    INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2 194 815 - + 2013年 [査読有り][通常論文]
     
    This paper describes the twining of seaweed in fluid environment by computer simulation of virtual seaweed. The morphology of virtual seaweed is modeled by Lindenmayer system. Then, two physical properties, which are adhesiveness and tear, are artificially introduced into this model. Physics engine is adopted to realize its physical motion. A fluid environment is constructed by the Lattice Boltzmann method. The method calculates time evolution of particle distribution to simulate fluid motion. The motion of virtual seaweed is acquired by moving in the environment. In order to find the twining conditions and the way of avoiding it, the simulation is executed by altering the environment. We ascertained that the virtual seaweed behavior has the close relationship with the water flow.
  • 山本 雅人
    観光と情報 : 観光情報学会誌 9 1 59 - 63 観光情報学会 2013年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
     
    A Job-shop Scheduling Problem (JSP) is one of the combinatorial optimization problems. JSP appears as a basic scheduling problem in many situations of a manufacturing system and many methods for JSP have been invented. This study examines two effective methods, SA and LCO, for JSP and propose a hybrid method based on them. As a result of the experiments, the proposed method can find a good solution with short computational time. And the proposed method can hold the variance of the solutions less than the fundamental methods. Summarizing this study, the proposed method can find a good solution efficiently and stably.
  • 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年 [査読有り][通常論文]
     
    In recent years, a large-scale logistic center plays an important role in mail-order business with Internet. In the logistic center, the efficient managing is required to deliver products to customers as soon as possible. Researches to efficiently control the logistic center have been done in the various approaches. This study proposed a new method for the order-picking problem considering worker's jamming at the same shelf in the logistic center In the proposed method, we formulate worker's scheduling in the logistic center as Job-shop Scheduling Problem and optimize this problem. Numerical experiments show the proposed method improve worker's scheduling compared with rule-based scheduling.
  • Tsuyoshi Mikami, Yohichiro Kojima, Kazuya Yonezawa, Masahito Yamamoto, Masashi Furukawa
    JACIII 17 4 611 - 621 2013年 [査読有り][通常論文]
  • Ryosuke Ooe, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    Artificial Life and Robotics 17 3-4 470 - 475 2013年 [査読有り][通常論文]
     
    The objective of this study is to realize efficient learning for the high generalization ability of evolutionary artificial neural network (EANN). In order to achieve this objective, the evolutionary process of behavior acquisition is analyzed, and then an efficient evaluation function is led by the analysis. An artificial flying creature (AFC) is controlled to fly towards a given target point by EANN. The three-dimensional motion of the AFC is calculated by the physical engine PhysX and a numerical expression of the simple drag force. To evolve ANNs and to have the AFC flight suitably for given target points, particle swarm optimization optimizes parameters of ANNs. The results of evolutionary simulation show that generalization ability of ANNs does not always increase as evolution progresses, and it depends on given tasks of the AFC. It is also shown that diversity of input signals about target points, which the AFC goes through in flight, has positive correlation with generalization ability. © 2012 ISAROB.
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 497 - 498 2013年 [査読無し][通常論文]
  • 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 273 - 274 2013年 [査読無し][通常論文]
  • 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 275 - 276 2013年 [査読無し][通常論文]
  • 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 285 - 286 2013年 [査読無し][通常論文]
  • 横山 想一郎, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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.
  • 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 295 - 296 2013年 [査読無し][通常論文]
  • 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 297 - 298 2013年 [査読無し][通常論文]
  • 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 299 - 300 2013年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 横山 想一郎, 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 2013 761 - 762 2013年 [査読無し][通常論文]
  • 南 賢一, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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.
  • 利根川, 凛, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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.
  • 大江 亮介, 鈴木, 育男, 古川, 正志, 山本 雅人
    精密工学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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 181 - 182 2013年 [査読無し][通常論文]
  • 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 193 - 194 2013年 [査読無し][通常論文]
  • 横山 想一郎, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読有り][通常論文]
     
    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.
  • Tsuyoshi Mikami Kazuya, Yonezawa Yohichiro, Kojima, Masahito Yamamoto, Masashi Furukawa
    生体医工学 51 3234 - 96-R-96 Japanese Society for Medical and Biological Engineering 2013年 [査読有り][通常論文]
  • Zhuoran Xu, Mikko Polojarvi, Masahito Yamamoto, Masashi Furukawa
    2013 IEEE Congress on Evolutionary Computation, CEC 2013 333 - 340 2013年 [査読有り][通常論文]
     
    Multimodal optimization aims to discover all or most optima as opposed to only the best optimum. Evolutionary Algorithms provide a natural advantage in this field, because they are population based. However, Standard Evolutionary Algorithms tend to converge only to a single optimum. The radius-based niching evolutionary algorithms aim to solve this problem. However, they are criticized for the difficulty of the proper choice of the radius parameter. Detect-multimodal method does not necessitate using the radius parameter. It separates niches by detecting if two solutions are in same optimum. Although robust, the current detect-multimodal based niching method are computationally expensive. Inspired by the idea of combining radius-based niching method and detect-multimodal based niching method, we propose the Attraction Basin Estimating Genetic Algorithm (ABE) in this paper. It estimates the radius which is called attraction basin in this paper using detect-multimodal method, and use the estimated radius to separate species in the same way as radius-based method. We compare the proposed method with a detect-multimodal based method: Topological Species Conservation Algorithm. The experiments demonstrate that ABE has the similar ability to solve multimodal optimization problems as Topological Species Conservation, but significantly more efficiently. © 2013 IEEE.
  • Jun Ogawa, Masahito Yamamoto, Ikuo Suzuki, Masashi Furukawa
    INTELLIGENT AUTONOMOUS SYSTEMS 12 , VOL 2 194 815 - + 2013年 [査読有り][通常論文]
     
    This paper describes the twining of seaweed in fluid environment by computer simulation of virtual seaweed. The morphology of virtual seaweed is modeled by Lindenmayer system. Then, two physical properties, which are adhesiveness and tear, are artificially introduced into this model. Physics engine is adopted to realize its physical motion. A fluid environment is constructed by the Lattice Boltzmann method. The method calculates time evolution of particle distribution to simulate fluid motion. The motion of virtual seaweed is acquired by moving in the environment. In order to find the twining conditions and the way of avoiding it, the simulation is executed by altering the environment. We ascertained that the virtual seaweed behavior has the close relationship with the water flow.
  • Yukiyasu Iwasaki, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    PROCEEDINGS OF THE ASME/ISCIE INTERNATIONAL SYMPOSIUM ON FLEXIBLE AUTOMATION, ISFA 2012 325 - 331 2013年 [査読有り][通常論文]
     
    In recent years, a large-scale logistic center plays an important role in mail-order business with Internet. In the logistic center, the efficient managing is required to deliver products to customers as soon as possible. Researches to efficiently control the logistic center have been done in the various approaches. This study proposed a new method for the order-picking problem considering worker's jamming at the same shelf in the logistic center In the proposed method, we formulate worker's scheduling in the logistic center as Job-shop Scheduling Problem and optimize this problem. Numerical experiments show the proposed method improve worker's scheduling compared with rule-based scheduling.
  • 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 公益社団法人 精密工学会 2012年12月05日 [査読有り][通常論文]
     
    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 2012年12月 [査読無し][通常論文]
  • 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 2012年12月 [査読無し][通常論文]
  • 山本 雅人, 小笠原 寛弥, 鈴木 育男, 古川 正志
    情報処理 53 11 1184 - 1191 一般社団法人情報処理学会 2012年10月15日 [査読無し][通常論文]
     
    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 2012年10月 [査読無し][通常論文]
  • 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 2012年10月 [査読無し][通常論文]
  • 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 2012年10月 [査読無し][通常論文]
  • 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 2012年10月 [査読無し][通常論文]
  • 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
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    情報処理学会北海道シンポジウム2012 45 - 48 2012年10月 [査読無し][通常論文]
  • 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 2012年10月 [査読無し][通常論文]
  • 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 2012年10月 [査読無し][通常論文]
  • 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 公益社団法人 精密工学会 2012年04月05日 [査読無し][通常論文]
     
    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.
  • 梅村 裕太, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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 173 - 174 2012年 [査読無し][通常論文]
  • 田村 康将, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • XU ZHUORAN, 山本, 雅人, 古川 正志
    精密工学会学術講演会講演論文集 2012 451 - 452 公益社団法人 精密工学会 2012年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 岩崎 幸安, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 81 - 82 2012年 [査読無し][通常論文]
  • 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 143 - 144 2012年 [査読無し][通常論文]
  • 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講演会講演概要集 51st 175 - 176 2012年 [査読無し][通常論文]
  • 横山 想一郎, 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 2012 457 - 458 2012年 [査読無し][通常論文]
  • 大江 亮介, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学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年 [査読無し][通常論文]
     
    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 83 - 84 2012年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 横山 想一郎, 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(CD-ROM) 22nd 2012年 [査読無し][通常論文]
  • 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年 [査読有り][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 辻本 陽平, 鈴木, 育男, 山本, 雅人, 古川 正志
    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年 [査読無し][通常論文]
     
    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.
  • 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年 [査読有り][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 2012年 [査読無し][通常論文]
  • 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 2012年 [査読無し][通常論文]
  • 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 2012年 [査読無し][通常論文]
  • 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 2012年 [査読無し][通常論文]
  • 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 2012年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Yasumasa Tamura, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    ASME/ISCIE 2012 International Symposium on Flexible Automation, ISFA 2012 337 - 344 2012年 [査読有り][通常論文]
     
    A Job-shop Scheduling Problem (JSP) is one of the combinatorial optimization problems. JSP appears as a basic scheduling problem in many situations of a manufacturing system and many methods for JSP have been invented. This study examines two effective methods, SA and LCO, for JSP and propose a hybrid method based on them. As a result of the experiments, the proposed method can find a good solution with short computational time. And the proposed method can hold the variance of the solutions less than the fundamental methods. Summarizing this study, the proposed method can find a good solution efficiently and stably. Copyright © 2012 by ASME.
  • Tsuyoshi Mikami, Yohichiro Kojima, Kazuya Yonezawa, Masahito Yamamoto, Masashi Furukawa
    Proceedings of the SICE Annual Conference 1795 - 1797 2012年 [査読有り][通常論文]
     
    Recently, numerous investigations have shown that loud habitual snoring is due to nasal obstruction and loud oral snoring is found in many sleep apnea patients. So, it is important to detect oral snoring in the earlier stage, but unfortunately we cannot know our own sleep condition. For such purpose, we adopt a Support Vector Machine (SVM) classifier with Kullback-Leibler (KL) kernel so as to classify oral and nasal snoring sounds based on the spectral properties, and compare it with the other kernel functions. © 2012 SICE.
  • 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 公益社団法人 精密工学会 2012年 [査読有り][通常論文]
     
    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.
  • Tsuyoshi Mikami, Yohichiro Kojima, Kazuya Yonezawa, Masahito Yamamato, Masashi Furukawa
    Journal of Biomechanical Science and Engineering 7 4 433 - 448 2012年 [査読有り][通常論文]
     
    Snoring was once regarded as an indication of good sleep, but recently it has been known to be one of the symptoms which indicate sleep disordered breathing such as sleep apnea syndrome. Especially, loud snoring caused by oral breathing during sleep is often found in many apnea/hypopnea patients. Thus, it is important to detect oral snoring for medical treatment in the earlier stage, but we cannot know our own snoring. This paper describes a method to detect oral snoring by extracting the acoustic properties of snoring sounds. According to the FFT amplitude spectra, nasal snoring sounds consist of only lower frequency components less than 500Hz, whereas oral snoring sounds consist of unique intensity peaks at 1kHz and lower frequency components less than 500Hz as well. According to the bibliographical point of view, such lower frequency components indicate the palatal snoring, and the intensity peak at around 1kHz indicates the tongue base snoring. Therefore, it is obvious that nasal snoring sounds can be regarded as simple palatal snoring whereas oral snoring sounds are a mixture of palatal and tongue base snoring sounds. So, we focused on the fundamental frequency and maximum of the amplitude spectrum in a specific band. In this paper, the Harmonic Product Spectrum (HPS) method is used for estimating the fundamental frequency and the k-Nearest Neighbor method is adopted for classifying oral/nasal snoring sounds. As a result, over 89% of snoring sounds are successfully classified under the four kinds of cross validation evaluations. © 2012 by JSME.
  • 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年 [査読有り][通常論文]
  • Keiu Harada, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    IJALR 3 1 10 - 21 2012年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
     
    This study proposes an information propagation simulation model, which can deal with two conflicting information (A, (A) over bar). We examine how "<(A)overbar>" can restrain from propagating conflicting information " A " on the complex network N by use of this model. Simulations show that (1) choosing a node with the high order number as a source node to disseminate the information " (A) over bar " can restrain from propagating the conflicting information " A ", (2) dispatching the information " (A) over bar " as soon as possible after propagating the conflicting information " A " can restrain from propagating the conflicting information " A ", and (3) a restraining ratio of the number of nodes that hold " (A) over bar " to the number of nodes that hold " A " after spreading the information " A " in nodes that exist father than the average shortest path converges to the certain small number.
  • 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年 [査読有り][通常論文]
     
    This study presents a control method for a water flow to avoid seaweed twining in a cultivation pool. The water flow in the pool is modeled by the lattice Boltzmann method (LBM). Morphology of the seaweed is determined by L-system. Physics Modeling (PM) represents its physical model. Three physical properties, gradual collision, adhesiveness, and tear phenomenon for the seaweed are artificially introduced into simulation. Motion of the seaweed is examined in the virtual underwater pool by PM simulation. A water flow pattern is realized by controlling particles distributed in lattices. We ascertained that some water flow pattern can avoid the seaweed twining phenomenon by changing the water flow pattern in the simulation.
  • 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年 [査読無し][通常論文]
  • 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年 [査読有り][通常論文]
     
    In this paper a flight evolutionary simulation of an artificial flying creature (AFC) is described. The three-dimensional motion of the AFC is calculated by the physical engine PhysX and a numerical expression of the simple drag force. The AFC is controlled by an artificial neural network (ANN). The three-layered ANN which has nine input neurons and four output neurons is used for a simulation of the AFC. To evolve ANNs and to have the AFC flight suitably for given target points, a particle swarm optimization (PSO) optimizes parameters of ANNs. The results of evolutionary simulation show that the ability of generalization does not always increase as evolution progresses, and it depends on given tasks of the AFC. It is also shown that the number of situations which the AFC goes through has positive correlation with the ability of generalization.
  • J. Ogawa, I. Suzuki, M. Yamamoto, M. Furukawa
    PROCEEDINGS OF THE SEVENTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 17TH '12) 654 - 657 2012年 [査読有り][通常論文]
     
    This study presents a control method for a water flow to avoid seaweed twining in a cultivation pool. The water flow in the pool is modeled by the lattice Boltzmann method (LBM). Morphology of the seaweed is determined by L-system. Physics Modeling (PM) represents its physical model. Three physical properties, gradual collision, adhesiveness, and tear phenomenon for the seaweed are artificially introduced into simulation. Motion of the seaweed is examined in the virtual underwater pool by PM simulation. A water flow pattern is realized by controlling particles distributed in lattices. We ascertained that some water flow pattern can avoid the seaweed twining phenomenon by changing the water flow pattern in the simulation.
  • 小笠原, 寛弥, 鈴木, 育男, 山本, 雅人, 古川 正志
    IPSJ Journal 52 10  - 2943 Information Processing Society of Japan (IPSJ) 2011年10月15日 [査読有り][通常論文]
     
    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.
  • 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 公益社団法人 精密工学会 2011年05月05日 [査読有り][通常論文]
     
    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 put 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.
  • 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 2011年05月01日 [査読無し][通常論文]
  • 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 2011年05月01日 [査読無し][通常論文]
  • 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年 [査読有り][通常論文]
     
    The environment greatly influences acquirement of the behavior on the artificial life creature (AC) and artifact object (AO). However, the conventional studies like Karl Sims' ones have not accurately considered in an environmental influence. Instead, these influences are considered by replacing them into a simple environment. In this study, we accurately 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 water environment. As a result of simulation, we verify that it is possible for AC and AO to acquire swimming behavior in the under-water environment. Additionally we show the analysis of the acquired swimming behavior. © 2011 Springer-Verlag.
  • 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年 [査読有り][通常論文]
     
    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). © 2011 Springer-Verlag.
  • 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 2011年 [査読有り][通常論文]
     
    In areas such as evolutionary robotics and artificial life, simulating artificial robots and organisms are significant challenges to acquire their proper behaviors that achieve given tasks. This study proposes Animated Robot ("Anibot"), which can behave by obeying physical laws in a virtual 3D environment. Especially, we aim to obtain a control system in evolution which makes it possible to behave "Anibot" autonomously. This paper focuses on a virtual modular robot with a flexible structure and simulating it for learning and controlling. The experimental results show that the modular robot can move toward a light source as its goal in different circumstances. In addition, we discuss an adaptive ability in the different circumstances and a motion mechanism of an obtained behavior. © 2011 Springer-Verlag.
  • 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 19 - 22 2011年 [査読無し][通常論文]
  • 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 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 623 - 624 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 771 - 772 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 769 - 770 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 梅村 裕太, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学会学術講演会講演論文集 2011 639 - 640 公益社団法人 精密工学会 2011年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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講演論文集 2011 61 - 64 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 萬谷 和之, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学会学術講演会講演論文集 2011 651 - 652 公益社団法人 精密工学会 2011年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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 631 - 632 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 773 - 774 2011年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Keita Nakamura Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    Proceedings of the Eleventh European Conference on the Synthesis and Simulation of Living Systems 581 - 588 2011年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
     
    This paper presents how the differences appear when the artificial creature, which has wings in right and left sides of the body, autonomously behaves in the air environment and in the water environment. We construct approximate fluid environments with low computing costs to simulate the behavior acquisition for artificial creature. Also, we propose a simulation method for the artificial creature in two environments. As a result of simulation, we verify that it is possible for the creature to acquire behaviors in two different virtual fluid environments. After evolution, the creature behaves effectively by using leverage fluid forces in each virtual environment.
  • Ryosuke Ooe Ikuo, Suzuki, Masahito Yamamoto, Masashi Furukawa
    PROCEEDINGS OF THE SIXTEENTH INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIFE AND ROBOTICS (AROB 16TH '11) 613 - 616 2011年 [査読有り][通常論文]
     
    We describe a simple physics model of a butterfly and an approach to its flight control by the genetic algorithm (GA) and the artificial neural network (ANN). A physics model consists of two kinetic equations which are led by a simplification of fluid force. A butterfly's flight is controlled by an ANN. The GA optimizes weights of the ANN for the suitable flight. This approach resulted in the flight which is obtained by maximizing the prepared fitness. However, the optimized ANN did not have a generality and a butterfly fell down in changing the initial height. A transition of fitness throughout processes of evolution showed that too much optimization tends to break the generality. We call this phenomenon "over-evolution". Changing conditions of experiments prevented the over-evolution.
  • Keisuke Yoneda Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    Proceedings of the 11th European Conference on Artificial Life 882 - 889 2011年 [査読有り][通常論文]
  • 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 2011年 [査読有り][通常論文]
     
    In areas such as evolutionary robotics and artificial life, simulating artificial robots and organisms are significant challenges to acquire their proper behaviors that achieve given tasks. This study proposes Animated Robot ("Anibot"), which can behave by obeying physical laws in a virtual 3D environment. Especially, we aim to obtain a control system in evolution which makes it possible to behave "Anibot" autonomously. This paper focuses on a virtual modular robot with a flexible structure and simulating it for learning and controlling. The experimental results show that the modular robot can move toward a light source as its goal in different circumstances. In addition, we discuss an adaptive ability in the different circumstances and a motion mechanism of an obtained behavior. © 2011 Springer-Verlag.
  • 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年 [査読有り][通常論文]
  • 原田 恵雨, 鈴木, 育男, 山本, 雅人, 古川 正志
    日本ソフトウェア科学会誌「コンピュータソフトウェア」 28 1 127 - 134 2011年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
     
    The environment greatly influences acquirement of the behavior on the artificial life creature (AC) and artifact object (AO). However, the conventional studies like Karl Sims' ones have not accurately considered in an environmental influence. Instead, these influences are considered by replacing them into a simple environment. In this study, we accurately 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 water environment. As a result of simulation, we verify that it is possible for AC and AO to acquire swimming behavior in the under-water environment. Additionally we show the analysis of the acquired swimming behavior. © 2011 Springer-Verlag.
  • 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年 [査読有り][通常論文]
     
    This study aims at establishing a new computer aided animation method using the agent-based and physics modeling based animation. The specific problem we treat in this paper is to acquire an adaptive behavior of a virtual creature placed in a complex environment and to create the animation of its behavior automatically. The virtual creature is regarded as an autonomous agent who has sensors, actuators, and controllers. For controlling the virtual creature, ANN and CPG are adopted as the controllers. Optimization algorithm is introduced for learning the controllers. Numerical experiments proved that the virtual creature acquires effective motions (walking, swimming) to pursuit the destination, and to avoid the obstacle and other creatures.
  • 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年 [査読有り][通常論文]
     
    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). © 2011 Springer-Verlag.
  • 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年 [査読有り][通常論文]
     
    This study proposes the concepts of "behavior simple" and "behavior composed." Behavior simple means primitive behavior, and behavior composed is a combination of behaviors simple. An artificial creature first learns some behaviors simple. Then, it learns behavior composed as a combination of behaviors simple, responding to the change of environment. This concept is applied to an Artificial Flying Creature (AFC). The AFC learns two types of flight independently: flapping and gliding. After that, it learns a sophisticated behavior by alternatively selecting these behaviors. Simulation results prove that adequate flight occurs by alternatively using flapping and gliding.
  • Masashi Furukawa, Makoto Morinaga, Ryosuke Ooe, Michiko, Watanabe, Ikuo Suzuki, Masahito Yamamoto
    JACIII 15 7 838 - 845 2011年 [査読有り][通常論文]
     
    This study proposes the concepts of "behavior simple" and "behavior composed." Behavior simple means primitive behavior, and behavior composed is a combination of behaviors simple. An artificial creature first learns some behaviors simple. Then, it learns behavior composed as a combination of behaviors simple, responding to the change of environment. This concept is applied to an Artificial Flying Creature (AFC). The AFC learns two types of flight independently: flapping and gliding. After that, it learns a sophisticated behavior by alternatively selecting these behaviors. Simulation results prove that adequate flight occurs by alternatively using flapping and gliding.
  • 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年 [査読有り][通常論文]
     
    Walking and jumping are very effective movement in a debris area. However, it is difficult to jump successively because it has a lot of difficulties (e.g. controlling the strong power at taking off and suppressing an impact at landing). This paper proposes how to acquire the successive jumping motion. We model an artificial creature like a locust under the physical virtual environment and control it by using Artificial Neural Network (ANN). In order to realize the successive jumping motion, this paper proposes a concept of "Behavior Simple (BS)" and "Behavior Composed (BC)". The concept of BC is that a complex behavior is composed of plural simple behaviors. We consider that the successive jumping is divided into three BSs, taking off, getting up and returning leg back motion. After three BSs are trained by using the Real-Coded Genetic Algorithm (RCGA) independently, BC is trained by using RCGA as well. Experiments verify that the efficient successive jumping can be acquired.
  • 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年 [査読無し][通常論文]
     
    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). © 2011 Springer-Verlag.
  • Acquisition of Swimming Behavior on Artificial Creature in Virtual Water Environment
    In Advances in Artificial Life 99 - 106 2011年 [査読無し][通常論文]
  • Kenji Iwadate, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    2011 IEEE/SICE International Symposium on System Integration, SII 2011 714 - 719 2011年 [査読有り][通常論文]
     
    The objective of this study is to establish a new computer-aided animation method using agent-based and physics-modeling-based animation. The specific problem considered in this paper is the realization of the adaptive behavior of a virtual creature placed in a complex environment and the automatic animation of the creature's behavior. The virtual creature is regarded as an autonomous agent that has sensors, actuators, and controllers. For controlling the virtual creature, an artificial neural network and a central pattern generator are adopted as the controllers. An optimization algorithm is introduced for training the controllers. Numerical experiments prove that the virtual creature realizes effective motions (walking behavior) to reach the destination and to avoid obstacles and other creatures. © 2011 IEEE.
  • 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年 [査読無し][通常論文]
  • 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 公益社団法人 精密工学会 2010年12月05日 [査読無し][通常論文]
     
    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 2010年12月 [査読無し][通常論文]
  • 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 2010年12月 [査読無し][通常論文]
  • 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 2010年12月 [査読無し][通常論文]
  • 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 2010年12月 [査読無し][通常論文]
  • 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 2010年12月 [査読有り][通常論文]
  • 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 2010年12月 [査読有り][通常論文]
  • Ikuo Suzuki, Yasushi Iwata, Masahito Yamamoto, Masashi Furukawa
    SCIS and ISIS 2010 - Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent Systems 868 - 873 2010年12月 [査読有り][通常論文]
  • 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 2010年12月 [査読有り][通常論文]
  • 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 公益社団法人 精密工学会 2010年12月 [査読有り][通常論文]
     
    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 2010年11月 [査読有り][通常論文]
  • 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 2010年11月 [査読有り][通常論文]
  • 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 2010年11月 [査読有り][通常論文]
  • 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 2010年11月 [査読有り][通常論文]
  • Masahito Yamamoto
    International Journal of CAD/CAM 9 1 53 - 59 International Journal of CAD/CAM 2010年11月 [査読有り][通常論文]
  • 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講演論文集 2010 159 - 166 情報処理学会北海道支部 2010年10月 [査読無し][通常論文]
  • 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 2010 139 - 142 情報処理学会北海道支部 2010年10月 [査読無し][通常論文]
  • 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 2010 43 - 48 情報処理学会北海道支部 2010年10月 [査読無し][通常論文]
  • 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 37 - 42 2010年10月 [査読無し][通常論文]
  • 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 2010 33 - 36 情報処理学会北海道支部 2010年10月 [査読無し][通常論文]
  • Kenji Iwadate, Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2010 31 - 36 一般社団法人日本機械学会 2010年10月 [査読有り][通常論文]
     
    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.
  • Keisuke Yoneda Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2010 25 - 30 一般社団法人日本機械学会 2010年10月 [査読有り][通常論文]
     
    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.
  • Keita Nakamura Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2010 19 - 24 一般社団法人日本機械学会 2010年10月 [査読有り][通常論文]
     
    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.
  • 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 = Transactions of the Society of Instrument and Control Engineers 46 1 1 - 7 社団法人 計測自動制御学会 2010年10月 [査読有り][通常論文]
     
    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.
  • 川村秀憲, 鈴木恵二, 山本雅人, 松原仁
    情報処理 51 6 642 - 648 一般社団法人情報処理学会 2010年06月15日 [査読無し][通常論文]
     
    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.
  • 川村 秀憲, 鈴木 恵二, 山本 雅人, 松原 仁
    情報処理 51 6 642 - 648 一般社団法人情報処理学会 2010年06月15日 [査読無し][通常論文]
     
    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.
  • 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 公益社団法人 精密工学会 2010年02月05日 [査読有り][通常論文]
     
    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.
  • 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 = Transactions of the Society of Instrument and Control Engineers 46 1 1 - 7 計測自動制御学会 2010年01月31日 [査読無し][通常論文]
     
    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年 [査読有り][通常論文]
  • 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 711 - 712 2010年 [査読無し][通常論文]
  • 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 705 - 706 2010年 [査読無し][通常論文]
  • 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 699 - 700 2010年 [査読無し][通常論文]
  • 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 695 - 696 2010年 [査読無し][通常論文]
  • 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 689 - 690 2010年 [査読無し][通常論文]
  • 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 685 - 686 2010年 [査読無し][通常論文]
  • 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 679 - 680 2010年 [査読無し][通常論文]
  • 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 79 - 80 精密工学会北海道支部 2010年 [査読無し][通常論文]
  • 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 75 - 76 2010年 [査読無し][通常論文]
  • 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 73 - 74 2010年 [査読無し][通常論文]
  • 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 61 - 62 精密工学会北海道支部 2010年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 21 - 22 精密工学会北海道支部 2010年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 429 - 430 2010年 [査読無し][通常論文]
  • 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 2010年 [査読有り][通常論文]
  • 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 2010年 [査読有り][通常論文]
  • 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 2010年 [査読有り][通常論文]
  • 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講演概要集 2010 "2P1 - G14(1)"-"2P1-G14(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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講演概要集 2010 "2P1 - G04(1)"-"2P1-G04(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2P1 - F29(1)"-"2P1-F29(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2P1 - F27(1)"-"2P1-F27(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2P1 - F26(1)"-"2P1-F26(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - G08(1)"-"2A2-G08(2)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - G06(1)"-"2A2-G06(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - G03(1)"-"2A2-G03(2)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - F28(1)"-"2A2-F28(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - F21(1)"-"2A2-F21(2)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - F19(1)"-"2A2-F19(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A2 - F17(1)"-"2A2-F17(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 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講演概要集 2010 "2A1 - F26(1)"-"2A1-F26(4)" 一般社団法人日本機械学会 2010年 [査読無し][通常論文]
     
    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.
  • 三上 剛, 小島 洋一郎, 山本 雅人, 古川 正志
    ロボティクス・メカトロニクス講演会講演概要集 2010 0 _1A2 - F25_1-_1A2-F25_4 一般社団法人 日本機械学会 2010年 [査読無し][通常論文]
     
    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 75 - 76 2010年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 1 267 - 268 2010年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 341 - 342 2010年 [査読無し][通常論文]
  • 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 337 - 338 2010年 [査読無し][通常論文]
  • 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 331 - 332 2010年 [査読無し][通常論文]
  • 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 327 - 328 2010年 [査読無し][通常論文]
  • 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 323 - 324 2010年 [査読無し][通常論文]
  • 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 319 - 320 2010年 [査読無し][通常論文]
  • 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 315 - 316 2010年 [査読無し][通常論文]
  • 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 311 - 312 2010年 [査読無し][通常論文]
  • 岩館 健司, 鈴木, 育男, 山本, 雅人, 古川 正志
    精密工学会学術講演会講演論文集 2010 93 - 94 公益社団法人 精密工学会 2010年 [査読無し][通常論文]
     
    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.
  • 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 87 - 88 2010年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Masashi Furukawa, Makoto Morinaga, Michiko Watanbe, Ikuo Suzuki, Masahito Yamamoto
    2010 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010) 624 - 629 2010年 [査読有り][通常論文]
     
    This paper proposes an artificial flying creature by flapping in a virtual air environment obeying physics law. For this purpose, a concise air drag computation method is introduced. The air drag plays the role of the environment force against the creature. The motion of the creature is automatically computed by use of the physics modeling software system and visualized as an animation movie. Results show that the creature with several pair of wings can fly by flapping as "a life as it could be".
  • Keiu Harada Ikuo Suzuki, Masahito Yamamoto, Masashi Furukawa
    Proceedings of SWWS10 (The 2010 International Conference on Semantic Web and Web Services) 147 - 151 2010年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • 川村 秀憲, 鈴木, 恵二, 山本, 雅人, 松原 仁
    情報処理 51 6 642 - 648 2010年 [査読有り][通常論文]
  • Masashi Furukawa, Makoto Morinaga, Michiko Watanbe, Ikuo Suzuki, Masahito Yamamoto
    2010 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2010) 624 - 629 2010年 [査読有り][通常論文]
     
    This paper proposes an artificial flying creature by flapping in a virtual air environment obeying physics law. For this purpose, a concise air drag computation method is introduced. The air drag plays the role of the environment force against the creature. The motion of the creature is automatically computed by use of the physics modeling software system and visualized as an animation movie. Results show that the creature with several pair of wings can fly by flapping as "a life as it could be".
  • 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 50 11 2752 - 2759 一般社団法人情報処理学会 2009年11月15日 [査読無し][通常論文]
     
    ネットワーク可視化技術は,ネットワークを大域的に俯瞰することで,その構造的特徴をとらえ,ノード間のリンク関係だけでは見えにくい新たな情報を見つけ出すうえで有用な技術である.本研究ではネットワークの可視化に対して,自己組織化マップ(SOM)の学習機構を利用した可視化方法を適用する.従来のSOMに基づくグラフレイアウト方法であるISOM(Inverted Self-Organizing Map)は,従来の力学的手法に比べ非常に高速であり,隣接ノードどうしが近い位置に配置されるという利点により,ある程度の意味を持つ結果が出力可能である.しかし,一方で可視化結果が信号領域で歪められる現象が起こる問題点を持つ.本研究ではこの問題点を解決する方法としてDSSOM(Dynamically-Signaling Self-Organizing Map)を提案し,その有用性を検証する.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.
  • 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 公益社団法人 精密工学会 2009年10月05日 [査読無し][通常論文]
     
    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.
  • 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年 [査読有り][通常論文]
     
    In this paper, we demonstrate a design of autonomous virtual creatures (called animated robots: Anibots in this paper) and develop a design tool for animated robots. An animated robot can behave autonomously by using its own sensors and controllers on three-dimensional physically modeled environment. The developed tool can enable us to execute the simulation of anibots on physical environment at any time during the modeling process. In order to simulate more realistic world, an approximate fluid environment model with low computational costs is presented. It is shown that a combinatorial use of neural network implementation for controllers and the genetic algorithm (GA) or the particle swarm optimization (PSO) is effective for emerging more realistic autonomous behaviours of animated robots.
  • 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年 [査読無し][通常論文]
  • A New Solution for Vehicle Routing Problem using Local Clustering Organization
    Proceeings of the 20th National Conference of Australian Society for Operations Research & the 5th International Intelligent Logistics System Conference 83.1-83.14  2009年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 75 10 1260 - 1264 公益社団法人 精密工学会 2009年 [査読無し][通常論文]
     
    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.
  • 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年 [査読無し][通常論文]
  • 高谷 敏彦, 川村 秀憲, 山本 雅人, 大内 東
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 129 1 24 - 188 一般社団法人 電気学会 2009年 [査読無し][通常論文]
     
    We report on cooperative control of multiple neural networks for indoor balloon robot. In our laboratory, the indoor balloon has been studied to achieve various applications. Our objective of this paper is to propose a robust controller that can adapt to mechanical accidents such as breakdown of propellers. In our proposal method, each propeller thrust is independently calculated by each small network. We confirm effectiveness of the proposed method compared to the method of calculating thrusts by a single neural network on the simulator.
  • Masahito Yamamoto, Satoshi Kashiwamura, Azuma Ohuchi, Masashi Furukawa
    Natural Computing 7 3 335 - 346 2008年09月 [査読有り][通常論文]
     
    A DNA Memory with over 10 million (16.8 M) addresses was achieved. The data embedded into a unique address was correctly extracted through an addressing processes based on 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. In decoding process, multiple data with different addresses can be also simultaneously accessed by using the mixture of some address primers. © Springer Science+Business Media B.V. 2008.
  • Atsushi Kameda, Masahito Yamamoto, Azuma Ohuchi, Satsuki Yaegashi, Masami Hagiya
    Natural Computing 7 2 287 - 298 2008年06月 [査読有り][通常論文]
     
    DNA machines consisting of consecutive hairpins, which we have previously described, have various potential applications in DNA computation. In the present study, a 288-base DNA machine containing four consecutive hairpins was successfully constructed by ligation and PCR. PAGE and fluorescence spectroscopy experiments verified that all four hairpins were successfully opened by four opener oligomers, and that hairpin opening was dependent on the proper openers added in the correct order. Quantitative analysis of the final results by fluorescence spectroscopy indicated that all four hairpins were open in about 1/4 to 1/3 of the DNA machines. © Springer Science+Business Media B.V. 2007.
  • 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) 2008年06月 [査読有り][通常論文]
  • 山本 雅人, 柏村 聡, 大内 東
    情報処理学会論文誌. 数理モデル化と応用 49 4 36 - 44 一般社団法人情報処理学会 2008年03月15日 [査読無し][通常論文]
     
    著者らは,約16.8Mのアドレス空間を持つDNAメモリ(Nested Primer Molecular Memory: NPMM)を構築した.このDNAメモリでは,データはNested PCRとよばれる実験的操作によって,正しいアドレスを指定したときのみ取り出せる.本論文では,DNAメモリのデータ取り出し操作であるアドレッシングの過程を数理モデル化し,容量の最大化を最適化問題として定式化することで,NPMMのスケールアップの限界を議論する.
  • 森岡 淳, 古川 正志, 山本 雅人, 鈴木 育男
    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 2008年03月13日 [査読無し][通常論文]
  • Toshihiko Takaya, Hidenori Kawamura, Masahito Yamamoto, Azuma Ohuchi
    ELECTRONICS AND COMMUNICATIONS IN JAPAN 91 2 1 - 13 2008年02月 [査読有り][通常論文]
     
    Blimp robots are an attractive form of small flight robot. because they are maintained aloft by buoyancy, are safe, require little energy and have relatively long flight times. The development of a general-purpose blimp robot research platform allowing modular installation of a variety of hardware and software components will lower the barrier to the creation of new research projects and increase project efficiency. This paper describes the development of such a general-purpose platform and the testing of its suitability for research use. Experiments performed on the platform included: (I) testing of position maintenance capabilities, and changeover from a PID control software module to a learning control module; (2) testing of the ease and effectiveness of exchanging one hardware module (a microphone) for another (a camera); (3) installation of a new hardware module (a microphone) along with an existing module (a camera); (4) testing of addition of functions and performance of a topologic map generation experiment with addition of an ultrasonic sensor. The effectiveness of information fusion combined with a layered software structure was demonstrated in the experiments, indicating that the newly developed platform will be effective in promoting research on blimp robots. (C) 2008 Wiley Periodicals, Inc. Electron Comm Jpn, 91(2): 1-13 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecj.10025
  • Masahito Yamamoto, Satoshi Kashiwamura, Azuma Ohuchi
    DNA COMPUTING 4848 99 - + 2008年 [査読有り][通常論文]
     
    A DNA Memory with over 10 million (16.8M) addresses was achieved. 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.
  • Atsushi Kameda, Satoshi Kashiwamura, Masahito Yamamoto, Azuma Ohuchi, Masami Hagiya
    DNA COMPUTING 4848 109 - + 2008年 [査読有り][通常論文]
     
    In molecular computing, it has long been a central focus to realize robust computational processes by suppressing the randomness of molecular reactions. To this end, several methods have been developed to control hybridization reactions of DNA molecules by optimizing DNA sequences and reaction parameters. However, another direction in the field is to take advantage of molecular randomness rather than avoid it. In this paper, we show that randomness can be useful in combination with a huge-capacity molecular memory, and demonstrate its application to an existing technology - DNA ink.
  • Naoki Iimura, Masahito Yamamoto, Fumiaki Tanaka, Azuma Ohuchi
    DNA Computing, 13th International Meeting on DNA Computing, DNA13, Memphis, TN, USA, June 4-8, 2007, Revised Selected Papers 4848 140 - + Springer 2008年 [査読有り][通常論文]
     
    A DNA computation model by DNA tiles needs sequence design in order to correctly form tile structure and self-assembly. We design sequence, demonstrate biochemical experiments by a trial and error approach, and, repeatedly analyze tiles. Because no integrated sequence design system computes data that indicates properties of sequences, we must analyze designed sequences by hand and many types of software. In this paper, we develop a sequence design support system for 4 x 4 DNA tiles that analyzes and optimizes tile sequences to support sequence design. The most remarkable feature of this system is optimization based on free energy. The optimization strategy is developed so that the energy of perfect tile is the stablest.
  • Toshihiko Takaya, Hidenori Kawamura, Masahito Yamamoto, Azuma Ohuchi
    IEEJ Transactions on Electronics, Information and Systems 128 9 8 - 1461 2008年 [査読有り][通常論文]
     
    Recent studies have been mainly engaged with movements by 2 or more autonomous robots. Especially, the development of autonomous robots utilized by the industrial manufacture has been advancing. However, the extent of these researches was limited to robots moving in 3 dimensional autonomous robots, such as airplanes or helicopters. On the other hand, regarding studies on small size indoor 3 dimensional blimp robots, characteristics of entertainment robots, indoor surveillance robots, object searching robots in disaster building have been subject to investigation. However, previous studies drew the attention to the difficulties arising when the cooperative behavior of 2 or more autonomous blimp robots is strongly presented depending on changes in the experimental environment, denoting the weak points of these systems. In this paper, 2 small size autonomous blimp robots were used, and basic experiments with time constraints of behavior control were conducted, examining possible coordinated movements of 2 small size autonomous blimp robots, for the purpose of high application achievement of utility. © 2008 The Institute of Electrical Engineers of Japan.
  • Hidenori Kawamura, Masahito Yamamoto, Toshihiko Takaya, Azuma Ohuchi
    Artificial Life and Robotics 12 1-2 116 - 121 2008年 [査読有り][通常論文]
     
    We report on learning landing control for the self-energy recharging of indoor blimp robots. Indoor blimp robots have potential applications in monitoring, surveillance, and entertainment. It might be necessary for blimp robots to fly for a long time to achieve these tasks. Since blimp robots cannot have a heavy battery, it is difficult to fly for long time. Therefore, we solved this problem by developing self-energy recharging control, i.e., docking to an energy charging station. We call it landing control. We introduce a way to learn landing control to tackle an unstable flying condition. The results of experiments show the effectiveness of the landing control. © 2008 International Symposium on Artificial Life and Robotics (ISAROB).
  • Naoki Iimura, Masahito Yamamoto, Fumiaki Tanaka, Azuma Ohuchi
    DNA COMPUTING 4848 4848 140 - + 2008年 [査読無し][通常論文]
     
    A DNA computation model by DNA tiles needs sequence design in order to correctly form tile structure and self-assembly. We design sequence, demonstrate biochemical experiments by a trial and error approach, and, repeatedly analyze tiles. Because no integrated sequence design system computes data that indicates properties of sequences, we must analyze designed sequences by hand and many types of software. In this paper, we develop a sequence design support system for 4 x 4 DNA tiles that analyzes and optimizes tile sequences to support sequence design. The most remarkable feature of this system is optimization based on free energy. The optimization strategy is developed so that the energy of perfect tile is the stablest.
  • Masahito Yamamoto, Satoshi Kashiwamura, Azuma Ohuchi
    DNA COMPUTING 4848 4848 99 - + 2008年 [査読無し][通常論文]
     
    A DNA Memory with over 10 million (16.8M) addresses was achieved. 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.
  • Atsushi Kameda, Satoshi Kashiwamura, Masahito Yamamoto, Azuma Ohuchi, Masami Hagiya
    DNA COMPUTING 4848 4848 109 - + 2008年 [査読無し][通常論文]
     
    In molecular computing, it has long been a central focus to realize robust computational processes by suppressing the randomness of molecular reactions. To this end, several methods have been developed to control hybridization reactions of DNA molecules by optimizing DNA sequences and reaction parameters. However, another direction in the field is to take advantage of molecular randomness rather than avoid it. In this paper, we show that randomness can be useful in combination with a huge-capacity molecular memory, and demonstrate its application to an existing technology - DNA ink.
  • 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年 [査読無し][通常論文]
  • Development of Modeling Tools for Animated Robot
    Conference Abstracts of Fourth International Symposium on Adaptive Motion of Animals and Machines (AMAM2008) 165 - 166 2008年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Masashi Furukawa, Yoshinobu Kajiura, Akihiro Mizoe, Michiko Watanabe, Ikuo Suzuki, Masahito Yamamoto
    IAS-10: INTELLIGENT AUTONOMOUS SYSTEMS 10 164 - 172 2008年 [査読無し][通常論文]
     
    This Study focuses on efficient management for a large-scale logistic center and proposes a new method how to assign stocked products to racks in a warehouse so as to minimize a round-up time (the maximum make-span time) to fetch ordered products. Self-organizing map (SOM), one of artificial neural networks, is employed to determine stocked products' allocation to the racks. In applying SOM, a number of order forms for rounding up the products are treated as a set of input signals and rack positions are regarded as SOM topology. Numerical simulation proves that the proposed method allow us to determine an efficient assignment of the stocked products to the racks.
  • 古川 正志, 山本 雅人, 鈴木 育男
    日本ロボット学会誌 = Journal of Robotics Society of Japan 26 1 2 - 5 一般社団法人 日本ロボット学会 2007年12月30日 [査読無し][通常論文]
  • Toshihiko Takaya, Hidenori Kawamura, Yoshihiro Minagawa, Masahito Yamamoto, Azuma Ohuchi
    Artificial Life and Robotics 11 2 227  2007年07月 [査読有り][通常論文]
  • Cser Katalin, 大内 東, 山本 雅人
    観光情報学会誌 「観光と情報」 3 1 36 - 44 観光情報学会 2007年 [査読無し][通常論文]
  • Sequence Design Support System for 4x4 DNA Tiles
    Preliminary Proceedings of the 13th International Meeting on DNA Computing 270 - 278 2007年 [査読無し][通常論文]
  • DNA Memorty with 16.8M addresses
    Preliminary Proceedings of the 13th International Meeting on DNA Computing 19 - 29 2007年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Cser Katalin, 大内 東, 山本 雅人
    観光と情報 3 1 36 - 44 観光情報学会 2007年 [査読無し][通常論文]
  • 高谷 敏彦, 川村 秀憲, 山本 雅人, 大内 東
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 127 9 18 - 1429 一般社団法人 電気学会 2007年 [査読無し][通常論文]
     
    A blimp robot is attractive as an small flight robot and can float in the air by buoyancy and realize safe to the crash small flight with low energy and can movement for a long time compared with other flight robots with low energy and can movement for a long time compared with other flight robots. However, control of an airplane robot is difficult for the nonlinear characteristic exposed to inertia by the air flow in response to influence. Therefore, the applied research which carried out the maximum use of such in recent years a blimp robot's feature is prosperous.In this paper, we realized development of blimp robot for research which can be used general-purpose by carrying out clue division of the blimp robot body at a unit, and constituting and building for research of blimp robot, and application development. On the other hand, by developing a general-purpose blimp robot research platform, improvement in the research efficiency of many researchers can be attained, and further, research start of blimp robot becomes easy and contributes to development of research.We performed the experiments for the above-mentioned proof. 1. Checked basic keeping position performance and that various orbital operation was possible. And the unit exchange ease of software unit was checked by the experiment which exchanges the control layer of software for learning control from PID control, and carries out comparison of operation. 2. In order to check the exchange ease of hardware unit, the sensor was exchanged for the microphon from the camera, and control of operation was checked. 3. For the unit addition ease, the microphon which carries out sound detection with the picture detection with a camera was added, and control of operation was verified. 4. The unit exchange was carried out for the check of a function addition and the topological map generation experiment by addition of an ultrasonic sensor was conducted.Developed blimp robot for research mounted the exchange ease and the additional ease of a unit in hardware using an analog and digital I/F fomenting realized in the combination of the software module of a layered structure in software was performed. Consequently, an addition and exchange of a function were able to become easy and were able to realize the research platform of blimp robot.
  • Toshihiko Takaya, Hidenori Kawamura, Yoshihiro Minagawa, Masahito Yamamoto, Azuma Ohuchi
    Artificial Life and Robotics 10 2 177 - 184 2006年11月 [査読有り][通常論文]
     
    Blimp robots are attractive as indoor flying robots because they can float in the air, land safely with low energy, and stay in motion for a long time compared with other flying robots. However, controlling blimp robots is difficult because they have nonlinear characteristics, are influenced by air streams, and can easily be influenced by inertia. Therefore, a robust and adaptive control system is needed for blimp robots. The applied research that has studied the features of indoor flying robots in recent years has prospered. Operating an indoor blimp robot for a long time is difficult because the payload is small, multiple batteries cannot be stacked, and the design of a thruster that gives freedom to the entire blimp robot is difficult. Therefore, an autonomous charge that allows operation for a long time is needed. We have developed a method of landing with orbital control of the charge point that gives autonomy to a blimp robot. The possibility of landing with orbital control is shown. © ISAROB 2006.
  • F Tanaka, A Kameda, M Yamamoto, A Ohuchi
    DNA COMPUTING 3892 371 - 379 2006年 [査読有り][通常論文]
     
    We investigated the specificity of hybridization based on a minimum free energy (Delta G(min)) through gel electrophoresis analysis. The analysis, using 94 pairs of sequences with length 20, showed that sequences that hybridize each other can be separated using the constraint Delta G(min) < -14.0, but cannot be separated using the number of base pairs (BP) in the range from 9 to 18. This demonstrates that the Delta G(min) is superior to the BP in terms of the capability to separate specific from non-specific sequences. Furthermore, the comparison between sequence design based on Delta G(min) and that based on the BP, done through a computer simulation, showed that the former outperformed the latter in terms of the number of sequences designed successfully as well as the ratio of successfully designed sequences to the total number of sequences checked.
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • Masahito Yamamoto, Yutaka Kita, Satoshi Kashiwamura, Atsushi Kameda, Azuma Ohuchi
    DNA COMPUTING 4287 418 - + 2006年 [査読有り][通常論文]
     
    An enormous amount of data such as genomic data can be stored into DNA molecules as base sequences. DNA database is important for organizing and maintaining these data, because extracted data from DNA database can be directly manipulated by chemical reactions. In this paper, we develop a DNA relational database with a simple data model and realize a computational model (relational algebra) of data manipulation as a sequence of chemical experiments. By using the developed database, it is shown that we can execute query operations based on the contents of data (the values of attributes). Furthermore, we propose a conversion scheme of query input to a series of experiment operations.
  • Naoki Iimura, Masahito Yamamoto, Fumiaki Tanaka, Atsushi Kameda, Azuma Ohuchi
    DNA COMPUTING 4287 172 - + 2006年 [査読有り][通常論文]
     
    DNA tile nanostructures have lately attracted a lot of attention as a new calculation technique and material on the nanometer scale. In forming DNA tiles, sequences need to bond in tile conformation. Conventional work can design sequences using overlapping subsequence. In this paper, we design tile sequences based on free energy. As a result of optimization, we show that we can design tile sequences as stable as conventional tiles. Moreover, we illustrate that the tile designed by the proposed method is perhaps more stable than conventional one. This method will be useful to design many tiles when forming large scale and complex DNA nanostructures.
  • Atsushi Kameda, Masahito Yamamoto, Azuma Ohuchi, Satsuki Yaegashi, Masami Hagiya
    DNA Computing 4287 381 - 392 2006年 [査読有り][通常論文]
     
    DNA machines consisting of consecutive hairpins, which we have previously described, have various potential applications in DNA computation. In the present study, a 288-base DNA machine containing four consecutive hairpins was successfully constructed by ligation and PCR. PAGE and fluorescence spectroscopy experiments verified that all four hairpins were successfully opened by four opener oligomers, and that hairpin opening was dependent on the proper openers added in the correct order. Quantitative analysis of the final results by fluorescence spectroscopy indicated that all four hairpins were open in about 1/4 to 1/3 of the DNA machines.
  • Toshihiko Takaya, Hidenori Kawamura, Yoshihiro Minagawa, Masahito Yamamoto, Azuma Ouchi
    2006 SICE-ICASE International Joint Conference 1291 - 1294 2006年 [査読有り][通常論文]
     
    Blimp robots are attractive as indoor flying robots because they can float in the air, land safely with low energy, and stay in motion for a long time compared with other flying robots. However, controlling of blimp robots is difficult, because they have nonlinear characteristics, are influenced by air streams, and is easy to be influenced of inertia. Therefore a robust and adaptive control system is needed for blimp robots. The applied research that paid its attention to the feature of indoor flying robot in recent years has prospered. Operating an indoor blimp robot for a long time is difficult for the payload is small, many batteries cannot be stacked. and the design of a thruster that has freedom and the entire blimp robot. Therefore, an autonomous charge that enables operation for a long time is needed. We developed a round orbit control to the Surveillance point for an autonomous of a blimp robot. The possibility of round surveillance three dimensional orbit controls was shown. © 2006 ICASE.
  • 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年 [査読無し][通常論文]
  • K Komiya, K Sakamoto, A Kameda, M Yamamoto, A Ohuchi, D Kiga, S Yokoyama, M Hagiya
    BIOSYSTEMS 83 1 18 - 25 2006年01月 [査読有り][通常論文]
     
    Parallelism is one of the major advantages of molecular computation. A large number of data encoded in DNA molecules can be processed simultaneously by molecular biology techniques, although only a single set of instructions has been implemented in a solution. We have developed a computing machine, called the "whiplash" machine, which is made of DNA polymerase and a hairpin DNA. This machine simulates a finite state machine, executing its own instructions encoded in the DNA moiety, and would thus be applicable to multiple-instruction operation in a solution. In the present study, we explored the feasibility of this novel type of parallelism by applying the whiplash machine in a computation of the directed Hamiltonian path problem. The possible paths in a given graph were represented with different instruction sets, which were then implemented separately by whiplash machines in a test tube. After an autonomous operation of the machines, only the machine that implemented the instruction set corresponding to the Hamiltonian path was recovered from the tube. On the basis of the efficiency of machine operation, which was experimentally determined, 10(10) different instruction sets could be implemented simultaneously in a 1-ml solution. (C) 2005 Elsevier Ireland Ltd. All rights reserved.
  • Atsushi Kameda, Masahito Yamamoto, Hiroki Uejima, Masami Hagiya, Kensaku Sakamoto, Azuma Ohuchi
    Natural Computing 4 2 103 - 126 2005年06月 [査読有り][通常論文]
     
    In this paper, we propose a new architecture for a multi-state DNA machine whose conformation of repeated hairpin structures changes sequentially in response to input oligomers. As an application of the machine, we also propose molecular memory in which the machine is used as a memory unit. Addressing in the memory is realized through state transitions of the machine. We then describe a method for designing DNA sequences of the machine, which exhaustively checks conformational changes of the machine by dividing its secondary structure into hairpin units. The method is based on the minimum free energy of the structure, the structure transition paths, and the total frequency of optimal and suboptimal structures. DNA sequences designed by the method were tested in a chemical experiment in which a machine consisting of two hairpins was actually constructed. As a result, we verified that the multi-state DNA machine realized the expected changes in its secondary structure. © Springer 2005.
  • 川村 秀憲, 角田 久雄, 山本 雅人, 高谷 敏彦, 大内 東
    知能と情報 : 日本知能情報ファジィ学会誌 : 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 2005年04月15日 [査読無し][通常論文]
     
    本稿では, 人の呼びかけに反応して様々な動作を行うエンタテインメントバルーンロボットの開発と基礎的な実験について報告する.バルーンロボットにはワイヤレスCCDカメラとワイヤレスマイクが搭載され, 人の拍手を感知して回転動作や上下移動を行う.人の呼びかけに対しては, 確率的状態遷移機械を利用することによって, 不確実な再現性をともなった動作系列の生成を実現した.バルーンは空調などの外乱に容易に影響を受けるので, 連続的に動作可能な状態を維持することは困難であるが, 地面に置かれたランドマークを利用したホバリング制御に基づいて制御することによって長時間安定してインタラクティブな飛行を可能とした.実験を通して, 人とインタラクションをとりながら長時間飛行が可能であることを確認した.
  • S Kashiwamura, M Yamamoto, A Kameda, T Shiba, A Ohuchi
    BIOSYSTEMS 80 1 99 - 112 2005年04月 [査読有り][通常論文]
     
    DNA is an attractive memory unit because of its immense information density. Here, we describe a memory model made of DNA, called Nested Primer Molecular Memory (NPMM). NPMM consists of many DNA strands, and each DNA strand consists of two areas: a data area and a data address area. When the address of target data is specified, only the target data can be extracted from NPMM. In this paper, we evaluate the validity of the basic operations of NPMM and then discuss the feasibility of scaled-up NPMM through some laboratory experiments. In the latter, we deal with scaled-up NPMM simulated by the Concentration Scaling method. (c) 2004 Elsevier Ireland Ltd. All rights reserved.
  • N Takahashi, A Kameda, M Yamamoto, A Ohuchi
    DNA COMPUTING 3384 355 - 364 2005年 [査読有り][通常論文]
     
    DNA RAM can eliminate the computational overhead of sequence design because the same RAM can be used for various computations once it is made. In this paper, we report a new method to construct RAM by using the hairpin structure of DNA, and the 4-bit RAM that we actually constructed with this method. We conducted an experiment to distinguish all 16 states of the 4-bit RAM; and another to verify our achievement of a successive writing operation. Finally, we performed aqueous computing with this 4-bit RAM.
  • M Nagao, H Kawamura, M Yamamoto, A Ohuchi
    Soft Computing as Transdisciplinary Science and Technology 285 - 294 2005年 [査読有り][通常論文]
     
    Recently, tourism activity analysis has been required in order to construct effective tourism policy and strategy for personal tour which became the mainstream Of Japan. In conventional tourism activity analysis, the information for analysis, i.e., tourism activity information, is collected on each tourist by using questionnaire, and then the analysis is carried out on the basis of it. However, it is difficult to realize effective tourism activity analysis in conventional method because the difficulty in collecting accurate questionnaire-based information collection has and detailed tourism activity information. In this paper, we propose a GPS log mining method in order to implement effective tourism activity analysis. GPS can automatically and continuously collect the position information where the GPS receiver exists. It is likely that an effective tourism activity analysis can be realized by extracting accurate tourism activity information from the information which is collected by GPS. We confirm the effectiveness of the proposed method through the experiments using the GPS log data collected from actual tourists in Hokkaido.
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda, Toshikazu Shiba, Azuma Ohuchi
    BioSystems 80 1 99 - 112 2005年 [査読無し][通常論文]
     
    Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda, Toshikazu Shiba and Azuma Ohuchi:
    Potential for enlarging DNA memory: the validity of experimental operations of
    scaled-up nested primer molecular memory,
    Biosystems, Vol. 80, No. 1, pp. 99-112 (2005)*
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 川村 秀憲, 角田 久雄, 山本 雅人, 高谷 敏彦, 大内 東
    知能・情報・ファジイ学会論文誌 Vol. 17 No. 2 203 - 211 日本知能情報ファジィ学会 2005年 [査読無し][通常論文]
     
    本稿では, 人の呼びかけに反応して様々な動作を行うエンタテインメントバルーンロボットの開発と基礎的な実験について報告する.バルーンロボットにはワイヤレスCCDカメラとワイヤレスマイクが搭載され, 人の拍手を感知して回転動作や上下移動を行う.人の呼びかけに対しては, 確率的状態遷移機械を利用することによって, 不確実な再現性をともなった動作系列の生成を実現した.バルーンは空調などの外乱に容易に影響を受けるので, 連続的に動作可能な状態を維持することは困難であるが, 地面に置かれたランドマークを利用したホバリング制御に基づいて制御することによって長時間安定してインタラクティブな飛行を可能とした.実験を通して, 人とインタラクションをとりながら長時間飛行が可能であることを確認した.
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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)*
  • F Tanaka, A Kameda, M Yamamoto, A Ohuchi
    NUCLEIC ACIDS RESEARCH 33 3 903 - 911 2005年 [査読有り][通常論文]
     
    We have developed an algorithm for designing multiple sequences of nucleic acids that have a uniform melting temperature between the sequence and its complement and that do not hybridize non-specifically with each other based on the minimum free energy (DeltaG (min)). Sequences that satisfy these constraints can be utilized in computations, various engineering applications such as microarrays, and nano-fabrications. Our algorithm is a random generate-and-test algorithm: it generates a candidate sequence randomly and tests whether the sequence satisfies the constraints. The novelty of our algorithm is that the filtering method uses a greedy search to calculate DeltaG (min). This effectively excludes inappropriate sequences before DeltaG (min) is calculated, thereby reducing computation time drastically when compared with an algorithm without the filtering. Experimental results in silico showed the superiority of the greedy search over the traditional approach based on the hamming distance. In addition, experimental results in vitro demonstrated that the experimental free energy (DeltaG (exp)) of 126 sequences correlated well with DeltaG (min) (\R\ = 0.90) than with the hamming distance (\R\ = 0.80). These results validate the rationality of a thermodynamic approach. We implemented our algorithm in a graphic user interface-based program written in Java.
  • Hidenori Kawamura, Hisao Kadota, Masahito Yamamoto, Toshihiko Takaya, Azuma Ohuchi
    JRM 17 5 500 - 508 2005年 [査読有り][通常論文]
  • Derrel Blain, Max Garzon, Soo-Yong Shin, Byoung-Tak Zhang, Satoshi Kashiwamura, Masahito Yamamoto, Atsushi Kameda, Azuma Ohuchi
    Natural Computing 3 4 427 - 442 2004年12月 [査読有り][通常論文]
     
    Simulators for biomolecular computing, (both in vitro and in silico), have come to play an important role in experimentation, analysis, and evaluation of the efficiency and scalability of DNA and biomolecule based computing. Simulation in silico of DNA computing is useful to support DNA-Computing algorithm design and to reduce the cost and effort of lab experiments. Although many simulations have now been developed, there exists no standard for simulation software in this area. Reliability, performance benchmarks, user interfaces, and accessibility are arguably the most important criteria for development and wide spread use of simulation software for BMC. The requirements and evaluation of such software packages for DNA computing software are discussed, particularly questions about software development, appropriate user environments, standardization of benchmark data sets, and centrally available common repositories for software and/or data. © 2004 Kluwer Academic Publishers.
  • 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 2004年06月15日 [査読無し][通常論文]
  • 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 一般社団法人情報処理学会 2004年06月15日 [査読無し][通常論文]
     
    バルーンロボットは低エネルギーで3次元空間を安全に移動できるため,人の進入が困難な場所での観測活動やアミューズメントロボット分野などに応用可能であり,室内での新たなタイプのロボットとして注目を集めている.バルーンロボットは浮力により宙に浮くことができる利点を持つ反面,慣性が大きく,微小な気流の影響を受けやすいため制御が困難であるなどの問題点を持つ.このため,様々な外乱を含む環境下において適切な制御方法を確立することができれば,実用的なバルーンロボットへ向けて大きく前進すると考えられる.本論文では,室内での使用目的に適した機体,プロペラユニットの配置などを設計し,室内用のバルーンロボットシステムの構築を行った.また,環境中にランドマークを置き,カメラを用いて認識することで設定した目標地点で留まることと,離れた位置から目標地点へ移動する位置制御に対する実験を行った.そして,PD制御のパラメータの数値設定を数パターン用意して実験を行うことで,目標地点で留まる場合にはP制御が適しており,目標地点へ移動する場合にはPD制御が適していることを示した.
  • S Kashiwamura, A Kameda, M Yamamoto, A Ohuchi
    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES E87A 6 1446 - 1453 2004年06月 [査読有り][通常論文]
     
    DNA Sequence Design Problem is a crucial problem in information-based biotechnology such as DNA computing. In this paper, we introduce a powerful design strategy for DNA sequences by refining Random Generator. Random Generator is one of the design strategies and offers great advantages, but it is not a good algorithm for generating a large set of DNA sequences. We propose a Two-Step Search algorithm, then show that TSS can generate a larger set of DNA sequences than Random Generator by computer simulation.
  • F Tanaka, A Kameda, M Yamamoto, A Ohuchi
    BIOCHEMISTRY 43 22 7143 - 7150 2004年06月 [査読有り][通常論文]
     
    All 64 possible thermodynamic parameters for a single-bulge loop in the middle of a sequence were derived from optical melting studies. The relative stability of a single bulge depended on both the type of bulged base and its flanking base pairs. The contribution of the single bulge to helix stability ranged from 3.69 kcal/mol for a TAT bulge to - 1.05 kcal/mol for an ACC bulge. Thermodynamics for 10 sequences with a GTG bulge were determined to test the applicability of the nearest-neighbor model to a single-bulge loop. Thermodynamic parameters for the GTG bulge and Watson-Crick base pairs predict DeltaG(37)degrees, DeltaHdegrees DeltaSdegrees and T-M(50muM) values with average deviations of 3.0%, 4.3%, 4.7%, and 0.9 degreesC, respectively. The prediction accuracy was within the limits of what can be expected for a nearestneighbor model. This certified that the thermodynamics for single-bulge loops can be estimated adequately using a nearest-neighbor model.
  • 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 2004年03月17日 [査読無し][通常論文]
  • A Kameda, M Yamamoto, H Uejima, M Hagiya, K Sakamoto, A Ohuchi
    DNA COMPUTING 2943 219 - 224 2004年 [査読有り][通常論文]
     
    In this paper, we demonstrate through a chemistry experiment that conformational addressing can be achieved using the hairpin structure of a DNA molecule. The hairpin structure made by single-strand DNA (ssDNA) self-hybridization is made into the address part of conformational addressing, and it is assumed that; the memory is read by opening this hairpin. The hairpin is continuously arranged in order to divide the address by class. Reading a sub-address requires an appropriate input oligomer to be added, when the preceding hairpin has been opened. We investigated, through the chemistry experiment, whether it would be possible to open the hairpin by the addition of an input oligomer into a solution that contained a hairpin-formed ssDNA.
  • F Tanaka, A Kameda, M Yamamoto, A Ohuchi
    DNA COMPUTING 2943 170 - 179 2004年 [査読有り][通常論文]
     
    Forty thermodynamic parameters were estimated for DNA duplexes with a single bulge loop. In DNA computing, sequences need to form wanted structures, not unwanted structures. To achieve this, we should design sequences with low free energy (Delta(37)(degrees)) in wanted structures and high free energy in unwanted structures. Conventional sequence design strategies have not prevented the formation of bulge loop structures completely. Estimation of the DeltaG(37)(degrees) of the bulge loop with the loop length from the chemical experimental data has not been enough to predict the DeltaG(37)(degrees) of the bulge loop structure. To investigate the effect of the type of bulged base and its flanking base pairs, we applied the nearest-neighbor model to DNA sequences with a single bulge loop. We also estimated the effect of loop position on the stability of a single bulge loop.
  • 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 一般社団法人日本機械学会 2004年
  • Masahito Yamamoto, Kohichiro Takagi, Masashi Nakatsugawa, Hidenori Kawamura, Azuma Ohuchi
    Information and Communication Technologies in Tourism(ENTER) 317 - 325 2004年
  • Keiko Motoyama, Hidenori Kawamura, Masahito Yamamoto, Azuma Ohuchi
    IEEJ Transactions on Electronics, Information and Systems 124 10 1930 - 1937 2004年 [査読有り][通常論文]
     
    The final goal of this study is to achieve an autonomous indoor blimp robot. While blimp robots are attractive entities moving safely in three dimensional space, they are hard to control autonomously as they are subjected to strong inertial forces and air resistance, and have many nonlinear characteristics. As blimp robots are used not only in vast halls but also in complex buildings with obstacles such as pillars and walls, they need to plan suitable motion for avoiding them. Furthermore, robots need to conserve energy with restricted power supply because they are unable to carry heavy batteries. We have to design an action-value function for planning motion in a blimp robot, considering constraints imposed by these characteristics of an actual robot. In this paper, we designed an action-value function for motion planning based on the potential field method, and evaluated its effectiveness in a simulated environment. © 2004, The Institute of Electrical Engineers of Japan. All rights reserved.
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • S Kashiwamura, M Yamamoto, A Kameda, T Shiba, A Ohuchi
    DNA COMPUTING 2568 112 - 123 2003年 [査読有り][通常論文]
     
    This paper presents a hierarchical DNA memory based on nested PCR. Each DNA strand in memory consists of address blocks and a data block. In order to access specific data, we specify the order of the address primers, and nested PCR are performed by using these primers. Our laboratory experiments are also presented to demonstrate the feasibility of the proposed memory.
  • F Tanaka, A Kameda, M Yamamoto, A Ohuchi
    EVOLVABLE SYSTEMS: FROM BIOLOGY TO HARDWARE, PROCEEDINGS 2606 446 - 456 2003年 [査読有り][通常論文]
     
    To improve the efficiency of DNA computing, we need to prevent hybridization errors. In this paper, we focus on the bulge loop structures, which cannot be prevented by current sequence design methods. To estimate the formation of bulge loop structure, we measured the melting temperature (Tm) and the binding intensity of sequences with a single bulge loop in some simple experiments. Based on the experimental results, we mainly discuss the effect of the base type and the position of the loops. We also discuss the possibilities for modeling the formation of bulge loops based on these experimental results.
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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), [(CD-ROM)](2003)*
    2003年 [査読無し][通常論文]
  • 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), [(CD-ROM)](2003)*
    2003年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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-ROM)](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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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), [(CD-ROM)](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), [(CD-ROM)](2003)*
    2003年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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), [(CD-ROM)](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年 [査読無し][通常論文]
     
    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), [(CD-ROM)](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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 山本 雅人, 柴 肇一, 大内 東
    システム/制御/情報 : システム制御情報学会誌 46 5 260 - 268 システム制御情報学会 2002年05月15日 [査読無し][通常論文]
  • 山本 雅人, 大内 東
    電気学会誌 = The journal of the Institute of Electrical Engineers of Japan 122 3 152 - 155 社団法人 電気学会 2002年03月01日 [査読無し][通常論文]
  • 大内 東, 栗原 正仁, 三田村 保, 山本 雅人, 宮腰 昭男, 中川 俊男, 長澤 邦雄
    医療情報学 = Japan journal of medical informatics 21 6 397 - 405 一般社団法人 日本医療情報学会 2002年02月01日 [査読無し][通常論文]
     

     本論文では,郡市医師会における情報化の実態を把握するための指標を提案する.また,提案する方法を北海道郡市医師会に適用した結果について報告する.最初に,郡市医師会情報化の現状について,インフラストラクチュア (I),スキル (S),マインド (M)の3つの視点から調査を行い,データを収集する.次いで,この実態調査結果を基に,4つの情報化指標を提案する.すなわちISM指標,ISM±指標,l-u指標,l-u比指標である.最後に提案した指標の有効性と妥当性を示すために北海道医師会において実施された実例を示す.本研究成果は北海道郡市医師会のみならず日本全国の郡市医師会に対して適用可能である.

  • A Kameda, N Matsuura, M Yamamoto, A Ohuchi
    UNCONVENTIONAL MODELS IN COMPUTATION, PROCEEDINGS 2509 191 - 198 2002年 [査読有り][通常論文]
     
    In this paper, we investigate the relation between an experimental condition and computational (reaction) efficiency of a simple model in DNA computing. A DNA computing algorithm needs many chemical and enzyme reactions in its solution process. An experimental condition for DNA computing is generally based on a molecular biology protocol. However, the purpose of an experiment is different in DNA computing and molecular biology. Therefore, we verified the relation between an experimental condition, reaction time, and reaction efficiency specifically from the viewpoint of DNA computing.
  • 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年 [査読有り][通常論文]
  • Y Kawazoe, T Shiba, M Yamamoto, A Ohuchi
    CSB2002: IEEE COMPUTER SOCIETY BIOINFORMATICS CONFERENCE 1 314 - 320 2002年 [査読有り][通常論文]
     
    The personal information encoded in genomic DNAshould not be made available to the public. With the increasing discoveries of new genes, it has become necessary to establish a security system for personal genome information. Although many security systems that are applied for electrical information in computers have been developed and established, there is no security system for information at DNA level. In this paper, we describe a new security system for information encoded within DNA. The original genomic DNA was mixed with many kinds of dummy DNAs (mixtures of natural and/or artificial DNAs) resulting in the masking of the original information. Using these dummy molecules, we succeeded to completely 'lock' the original genome information. If this information must be 'unlocked', it can be extracted and analyzed by a removal of dummy DNAs using molecular tagging techniques or by selective amplification using key primers.
  • M Yamamoto, A Kameda, N Matsuura, T Shiba, Y Kawazoe, A Ohuchi
    NEW GENERATION COMPUTING 20 3 251 - 261 2002年 [査読有り][通常論文]
     
    A separation method for DNA computing based on concentration control is presented. The concentration control method was earlier developed and has enabled us to use DNA concentrations as input data and as filters to extract target DNA. We have also applied the method to the shortest path problems, and have shown the potential of concentration control to solve large-scale combinatorial optimization problems. However, it is still quite difficult to separate different DNA with the same length and to quantify individual DNA concentrations. To overcome these difficulties, we use DGGE and CDGE in this paper. We demonstrate that the proposed method enables us to separate different DNA with the same length efficiently, and we actually solve an instance of the shortest path 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年 [査読有り]
  • Masashi Nakatsugawa, Masahito Yamamoto, Toshikazu Shiba, Azuma Ohuchi
    Proceedings of the 2002 Congress on Evolutionary Computation, CEC 2002 1 91 - 96 2002年 [査読有り][通常論文]
     
    Polymerase chain reaction (PCR) is the most useful experimental technique in DNA computing. We improve the reliability of PCR by adjusting the PCR protocol. Quality engineering makes efficient adjustment possible. We especially try to design a common protocol for improving the reliability of PCR in various reaction mixtures. © 2002 IEEE.
  • 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年 [査読有り][通常論文]
     
    Sequence design has turned out to be a crucial factor in successful DNA computing. In this paper, we present a support system for sequence design in DNA computing. Our system can fit various requirements for sequence design. The beta-version of this software is available for download.(1).
  • 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年 [査読有り][通常論文]
     
    We analyze the behavior of players in the situation where they recognize an identical situation as a simple market-like place differently. In our. model a player considers the others as a representative player. We examine the player's behavior when with and without fluidity of players.
  • 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年 [査読有り][通常論文]
     
    In this paper, the results of analysis of the hybridization process in DNA computing by using a simulation model are presented. The simulation model has some parameters that influence the results of computation. The,relations between these parameters and the results of simulations and laboratory experiments are therefore discussed.
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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)*
  • Hajime Araki, Taichi Kaji, Masahito Yamamoto, Keiji Suzuki, Azuma Ohuchi
    Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 135 4 43 - 51 2001年06月 [査読有り][通常論文]
     
    The optimal sequential problem is defined as the problem of finding the minimum cost partition of the nodes of a directed acyclic graph into subsets of a given size, subject to the constraint that the precedence relationships among the elements are satisfied. A heuristic algorithm based on tabu search has been proposed for this problem [2]. However, there is a tendency for the solutions obtained by tabu search to become trapped in bad local optima in parallel graphs with random edge costs. In this paper we present a genetic algorithm for the optimal sequential partitioning problem. We develop an effective two-point partial order crossover satisfying sequential conditions, which preserve better blocks that have a larger sum of edge costs. In this crossover we introduce the roulette selection method to escape local optima. We also assess the effectiveness of the algorithm. The results show that this proposed algorithm outperforms any other algorithm using tabu search in terms of solution quality.
  • 川村 秀憲, 山本 雅人, 大内 東
    計測自動制御学会論文集 37 5 455 - 464 計測自動制御学会 2001年05月31日 [査読無し][通常論文]
     
    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.
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
  • 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年 [査読有り][通常論文]
     
    Concentration controlled DNA computing are presented for realizing a local search for the solution of a shortest path problem. In this method, the concentrations of DNAs representing edges are determined according to the costs on the edges, and then the hybridization process is performed. Since the concentrations of hopeless candidate solutions tend to be small in the result of the hybridization process, we can realize a local search by the concentration controlled DNA computing. In order to discuss about the relation between given costs on edges in the graph and concentrations of generated DNA paths, the simulation model of the hybridization process is used, and the result of laboratory experiment is shown.
  • 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年 [査読有り][通常論文]
     
    Polymerase Chain Reaction (PCR) is thc most important process in DNA computing. When a concentration of DNA sequence is too little to investigate, PCR could amplify the sequence by a polymerase. PCR is frequently applied to obtain a result in DIVA computing, because the result is generally shown by a little amount of DNA sequence. Therefore, a reliability of PCR must be assured for DNA computing. In this paper, we define a reproducibility of PCR as the reliability. Similarly, a reaction time is defined as a reaction cost, and other parameters are defined as control factors in quality engineering. By adjusting the factors, we improve a PCR performance shown by the reproducibility and reaction cost.
  • 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年 [査読有り][通常論文]
  • Tomohisa Yamashita, Hidenori Kawamura, Masahito Yamamoto, Azuma Ohuchi
    New Frontiers in Artificial Intelligence, Joint JSAI 2001 Workshop Post-Proceedings 174 - 184 Springer 2001年 [査読有り][通常論文]
  • Masahito Yamamoto, Keiji Suzuki, Azuma Ohuchi
    International Transactions in Operational Research 8 3 305 - 315 2001年 [査読有り][通常論文]
     
    Since Deep Blue, which is a chess program, beat the world human chess champion, recent interest in computer games has been directed to shogi. However, the search space for shogi is larger than that of chess and a captured piece is available again in shogi. To overcome these difficulties, we propose a reinforcement learning method by self-play, in order to obtain a static evaluation function, which is a map from any positions in shogi to real values. Our proposed method is based on temporal difference learning, developed by R. Sutton and applied to backgammon by G. Tesauro. In our method, the neural network, which takes the board description of shogi positions and outputs the winning percentage from the position, is trained by only self-play without any knowledge of shogi. In order to show the effectiveness of obtained evaluation function, some computational experiments will be presented. International Federation of Operational Research Societies 2001.
  • Mitsuyoshi Nagao, Masahito Yamamoto, Keiji Suzuki, Azuma Ohuchi
    International Transactions in Operational Research 8 1 31 - 45 2001年 [査読有り][通常論文]
     
    In this paper, we propose a face identification system based on the Mahalanobis–Taguchi System (MTS). The MTS is one of the pattern recognition methods frequently used in quality engineering, and can perform robust pattern recognition by using training data, including noise. It is likely that this advantage will allow the effective implementation of a robust face identification system against lighting and face position fluctuations. Moreover, the MTS can optimize the number of attributes required for identification by using the orthogonal array and the signal/noise (SN) ratio. The face identification system has to deal with many users and the amount of data in a facial image is large. Therefore, the time required for identification can be decreased and the amount of data in the facial image database can be reduced by performing the optimization. We confirmed the effectiveness of the proposed system through practical experiments. The experimental results revealed that the MTS was an effective method for robust face identification, and could effectively reduce the number of attributes required for identification. International Federation of Operational Research Societies 2001.
  • T Yamashita, H Kawamura, M Yamamoto, A Ohuchi
    ICCIMA 2001: FOURTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND MULTIMEDIA APPLICATIONS, PROCEEDINGS 195 - 199 2001年 [査読有り][通常論文]
     
    In this paper We introduce mutual choice mechanism into the norms game instead of direct penal regulation and reformulate the norms game with mutual choice. In order to examine how the proportion of metanorm players to all players influences on the establishment of norm in the metanorms game with mutual choice, we perform simulation under several proportions of metanorm players. We exclude the game theoretic assumption of uniformity as the metanorm player and observe thf frequency of the establishment of the norm. As a result, we confirm the robustness of mutual choice against insufficiency of the metanorm players.
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 中津川雅史, 山本雅人, 大内東
    品質工学 8 5 547 - 554 2000年10月01日 [査読無し][通常論文]
  • 長尾 光悦, 山本 雅人, 鈴木 恵二, 大内 東
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 120 8 1157 - 1164 電気学会 2000年08月01日 [査読無し][通常論文]
     
    It is clear that facial expressions are important on face-to-face communication. Humans can not only guessother person's psychological state from facial expressions but can also give own intentions to other personsby using them. If users can use facial expressions to a computer and the computer can correctly recognizethem, an effective human interface can be constructed. Therefore, it is necessary to establish an effectivefacial expression recognition technique from facial image data. In this paper, we propose an application ofthe MTS (Mahalanobis-Taguchi-System) method for facial expression recognition. Especially, we treat thefacial expression recognition from stationary facial image data. The NITS method is a statistical patternrecognition method using the Mahalanobis distance. This method can consider the correlation among eachattribute 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 systembased on the MTS method, and then evaluate the effectiveness of the proposed methods through practicalexperiments. The experimental results revealed that our proposed methods could correctly recognize thefacial expressions and could effectively optimize the number of attributes.
  • H Kawamura, M Yamamoto, K Suzuki, A Ohuchi
    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES E83A 2 371 - 379 2000年02月 [査読有り][通常論文]
     
    Recently, researchers in various fields have shown interest in the behavior of creatures from the viewpoint of adaptiveness and flexibility. Ants, known as social insects, exhibit collective behavior in performing tasks that can not be carried out by an individual ant. In ant colonies. chemical substances, called pheromones, are used as a way to communicate important information on global behavior. For example. ants looking for food lay the way back to their nest with a specific type of pheromone. Other ants can follow the pheromone trail and find their way to baits efficiently. In 1991, Colorni et al. proposed the ant algorithm for Traveling Salesman Problems (TSPs) by using the analogy of such foraging behavior and pheromone communication. In the ant algorithm, there is a colony consisting of many simple ant agents that continuously visit TSP cities with opinions to prefer subtours connecting near cities and they lay strong pheromones. The ants completing their tours lay pheromones of various intensities with passed subtours according to distances. Namely, subtours in TSP tourns that have the possibility of being better tend to have strong pheromones, so the ant agents specify good regions in the search space by using this positive feedback mechanism. In this paper, we propose a multiple ant colonies algorithm that has been extended from the ant algorithm. This algorithm as several ant colonies for solving a TSP, while the original has only a single ant colony. Moreover, two kinds of pheromone effects, positive and negative pheromone effects, are introduced as the colony-level interactions. As a result of colony-level interactions, the colonies can exchange good schemata for solving a problem and can maintain their own variation in the search process. The proposed algorithm shows better performance than the original algorithm with almost the same agent strategy used in both algorithms except for the introduction of colony-level interactions.
  • 荒木 肇, 加地 太一, 山本 雅人, 鈴木 恵二, 大内 東
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society 120 2 215 - 221 電気学会 2000年02月01日 [査読無し][通常論文]
     
    The optimal sequential partitioning problem is defined as the problem to find the minimum cost partitionof the nodes of a directed acyclic graph into subsets of a given size, subject to the constraint that the precedence relationships among the elements are satisfied. The heuristic algorithm based on a tabu search for thisproblem has been proposed (2). However, there is a tendency for the solutions obtained using the tabu searchapproach to be trapped in bad local optima in the parallel graphs with random costs of edgesIn 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 thathas the larger sum of edge costs of block. In this crossover we introduce roulette selection method to escapelocal optima. We also assess the effectiveness of the developed algorithm. The results show that this proposedalgorithm outperforms, in terms of solution quality, any other algorithm using tabu search.
  • Hiroyuki Iizuka, Masatoshi Hiramoto, Hidenori Kawamura, Masahito Yamamoto, Azuma Ohuchi
    RoboCup 2000: Robot Soccer World Cup IV 449 - 452 Springer 2000年 [査読有り][通常論文]
  • Kawazoe Yumi, Shiba Toshikazu, Yamamoto Masahito, Ohuchi Azuma
    Genome Informatics 11 464 - 465 Japanese Society for Bioinformatics 2000年
  • Yamamoto Masahito, Matsuura Nobuo, Shiba Toshikazu, Ohuchi Azuma
    Genome Informatics 11 466 - 467 Japanese Society for Bioinformatics 2000年
  • H Kawamura, M Yamamoto, K Suzuki, A Ohuchi
    INTELLIGENT AUTONOMOUS SYSTEMS 6 527 - 534 2000年 [査読有り][通常論文]
     
    In this paper, we focus on evolutionary emergence of communication among multi-agents. As the stage of investigation, we prepare the ants war which needs artificial ant agents to interact each other to win the opponent. Ant agents are constructed with 2-layers neural networks, and evolved by genetic algorithm. Throughout several trials of evolutionary processes, we observed the emergence of two types of pheromones, i.e., the attractive pheromone and the repulsive pheromone. The evolved pheromones were very effective when used in larger number of agents, and this fact represents the emergence of collective intelligence and pheromone communication. According to these results, the collective intelligence and communication among agents are discussed.
  • 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年 [査読無し][通常論文]
  • Ahmad, J., Yamamoto, M. and Ohuchi, A.: "Evolutionary Algorithms for Nurse Scheduling Problem", Congress on Evolutionary Computation 2000, 1:196-203 (2000)*
    2000年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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)*
  • 山本 雅人, 柴 肇一, 大内 東
    バイオサイエンスとインダストリー = Bioscience & industry 57 3 27 - 30 バイオインダストリ-協会 1999年03月01日 [査読無し][通常論文]
  • H Kawamura, M Yamamoto, KJ Suzuki, A Ohuchi
    ADVANCES IN ARTIFICIAL LIFE, PROCEEDINGS 1674 639 - 643 1999年 [査読有り][通常論文]
     
    This paper is concerned about the origin of pheromone communication in complex societies, e.g., colonies of real ants and bees. The aim of the work is to study whether pheromone communication among artificial ant agents in a cooperative foraging scenario can arise simply by letting selection favor successfully foraging genotypes. For such aim. we introduce the ants war in which ant agents foraging more food items than the opponent can survive to next generation. In the experiments, we confirmed the emergence of pheromone communication without a specific predefined one.
  • 櫻田 隆宏, 山本 雅人, 鈴木 恵二, 大内 東
    生物物理 39 S172  一般社団法人 日本生物物理学会 1999年
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
     
    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)
  • 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年 [査読有り][通常論文]
  • 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 社団法人人工知能学会 1998年09月 [査読無し][通常論文]
     
    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.
  • 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 社団法人人工知能学会 1998年09月01日 [査読無し][通常論文]
     
    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.
  • M Yamamoto, A Ohuchi
    DECISION SUPPORT SYSTEMS 23 2 189 - 199 1998年06月 [査読有り][通常論文]
     
    Logical inference is of central importance in the information and decision science. First-order predicate inference (theorem proving) provides more powerful representation of models and of knowledge, but presents a hard computational problem. We extend Jeroslow's theorem-proving procedure in function-free formulas to be applicable to full first-order predicate formulas. Therefore, proposed theorem-proving procedure can be more flexible tool for data handling and inferences. Our proposed procedure is based on the partial-instantiation technique, which reduces a first-order predicate clausal-form formula to an incrementally augmented propositional formula and proves the theorem by checking the satisfiability of the propositional formula. We also show the completeness of the proposed procedure, i.e., it can detect the unsatisfiability of an input formula. Furthermore, we compare it with resolution-style theorem-proving program OTTER and show the efficiency of the proposed procedure. (C) 1998 Elsevier Science B.V. All rights reserved.
  • H Kawamura, M Yamamoto, T Mitamura, K Suzuki, A Ohuchi
    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES E81A 6 1089 - 1096 1998年06月 [査読有り][通常論文]
     
    In this paper, we propose a new cooperative search algorithm based on pheromone communication for solving the Vehicle Routing Problems. In this algorithm, multi-agents can partition the problem cooperatively and search partial solutions independently using pheromone communication, which mimics the communication method of real ants. Through some computer experiments the cooperative search of multi-agents is confirmed.
  • H Kawamura, M Yamamoto, K Suzuki, A Ohuchi
    INTELLIGENT AUTONOMOUS SYSTEMS 587 - 594 1998年 [査読有り][通常論文]
     
    In this paper, we propose the collective search algorithm based on pheromone communication for Vehicle Routing Problems. This algorithm is designed using multi-agent system, in which agents autonomously and independently search the partial solution of given problem to decrease their searching load. Pheromone communication imitated from social insects, i.e., real ants and bee, is used as the communication method between agents to emerge the cooperative behavior. Throughout computer experiments, we confirm the effectiveness of proposed algorithm for view point of cooperative behavior.
  • M Nagao, M Yamamoto, K Suzuki, A Ohuchi
    INTELLIGENT AUTONOMOUS SYSTEMS 631 - 638 1998年 [査読有り][通常論文]
     
    Recently, the image data has been treated in the information retrieval in accordance with the diversification of the kind of information. The retrieval of image data is different from the retrieval of text data because the subjectivity or kan-sei, and ambiguity have to be treated in the image data retrieval. In this paper, we propose the multi-agent approach for such image data retrieval. This multi-agent model is implemented by creating the artificial ecosystem with the evolving agents that cooperate and compete for the image data retrieval task. The multi-agents model can provide the retrieval reflecting the subjectivity, ambiguity and kan-sei, and the ability to quickly adapt in various situations.
  • 「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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • M.Yamamoto,H.Kawamura,K.Suzuki and A.Ohuchi:"Collective Approach for Combinatorial Optimization Problems”,Proceedings of ITC-CSCC'98:1479-1482(1998)
    1998年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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年 [査読無し][通常論文]
  • 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 1996年 [査読有り][通常論文]
     
    For studies toward the automated theorem proving, various methods and strategies have been presented based on the resolution principle proposed by Robinson in 1965. Most of the theorem-proving systems at present are based on this resolution principle. In contrast to this, Jeroslow proposed the partial instantiation technique in 1988. The method proposed by Jeroslow, however, has a problem in that only the formula not containing function symbols is considered and the efficiency is low since the clause form is not assumed. The authors improved Jeroslow's method. A procedure was proposed where satisfiability is decided for the formula of the clause form not containing function symbols, and the effectiveness of the method is demonstrated. This paper extends the above procedure and proposes a theorem-proving procedure so that the formula containing function symbols can be handled. A proof is given that the proposed procedure is complete. A comparison experiment is executed, and the effectiveness of the proposed procedure is investigated.
  • 山本 雅人, 大柳 俊夫, 大内 東
    電子情報通信学会論文誌. A, 基礎・境界 78 7 864 - 871 一般社団法人電子情報通信学会 1995年07月25日 [査読無し][通常論文]
     
    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.
  • Masahito Yamamoto, Azuma Ohuchi, Toshio Ohyanagi
    Electronics and Communications in Japan (Part III: Fundamental Electronic Science) 78 9 94 - 103 1995年 [査読有り][通常論文]
     
    When no function symbols occur in a first‐order predicate formula, there exists a procedure to decide the satisfiability of the formula. Examples of such procedures are the method based on Robinson's resolution principle and the method based on the partial instantiation technique by Jeroslow. This paper considers the case where the formula is in clausal form and no function symbols occur in it and proposes a satisfiability decision procedure based on the partial instantiation technique applicable to the considered case. the procedure is based on the partial instantiation technique, as in Jeroslow's method, but aims at the following aspects by utilizing the formula being in clausal form: (1) Davis‐Putnam's method is used in solving the satisfiability problem in the propositional logic (2) the rapid expansion of the formula can be suppressed by expanding the formula with the clause as the unit and (3) the number of unifications is reduced. the proposed method is compared to Jeroslow's method and the method based on the resolution principle, and then the effectiveness is demonstrated. Copyright © 1995 Wiley Periodicals, Inc., A Wiley Company
  • 山本 雅人, 大柳 俊夫, 大内 東
    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 1994年09月20日 [査読無し][通常論文]
     
    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.
  • 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 1994年07月 [査読無し][通常論文]
     
    The satisfiability problem ( SAT ) is one of the important problems in the field of computer science, since it is wellknown 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 ofresolution for a set of Q clauses. A β clause is a clause that has an additional quantitative condition. The conditionis 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 SATproblem 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. Somerelations between a β clause and a clause are also clarified. Some computational experiments are made to show theeffectiveness of IEMBSAT.
  • 大柳 俊夫, 山本 雅人, 大内 東
    情報処理学会論文誌 34 12 2464 - 2473 一般社団法人情報処理学会 1993年12月15日 [査読無し][通常論文]
     
    命題論理の充足可能性問題(以下SATと呼ぶ)は,計算複雑度がNP-完全である代表的な問題として,情報処理の分野における基本的な問題の一つにあげられている.この問題に対して,Davis-Putnamの方法に代表される記号的方法に関する研究がこれまで盛んに行われている.最近になって,OR技法の一つである整数計画法や線形計画法に基づく研究が主にORの分野の研究者によって行われている.この方法は記号的方法に対し定量的方法と呼ばれ,本来計算機が得意とする数値的な処理によりSATを高速に解くことを目指したものである.SATに対する定量的方法に関するこれまでの研究として,1)Branch and Boundに基づく方法,2)切除平面に基づく方法,3)内点法に基づく方法,4)陰的列挙法に基づく方法,などが提案されている.本論文では,陰的列挙法に基づく新しいSATアルゴリズムIEMSATを提案する.そして,SATに対する代表的な方法であるDavis-Putnamと提案アルゴリズムの関係を詳細に調べ両方法の対応付けを行う.この結果は,一般の0-1整数計画問題に対する陰的列挙法をSAT向きに特殊化することで,Davis-Putnamとほぼ同じ方法が導けることを示すものである.また,IEMSATおよびDavis-Putnamの方法を用いた計算機実験を行い,IEMSATの有効性を検証する.
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 210 - 213 [査読有り][通常論文]
  • 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 152 - 155 [査読有り][通常論文]
  • 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 100 - 103 [査読有り][通常論文]
  • 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 743 - 744 [査読有り][通常論文]
  • 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 739 - 740 [査読有り][通常論文]
  • 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 69 - 70 [査読有り][通常論文]
  • 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 109 - 110 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 66 - 67 [査読有り][通常論文]
  • 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 17 - 22 [査読有り][通常論文]
  • 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) [査読有り][通常論文]
  • 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) [査読有り][通常論文]
  • 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) [査読有り][通常論文]
  • 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) [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 1065 - 1066 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 1061 - 1062 [査読有り][通常論文]
  • 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 1053 - 1054 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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) [査読有り][通常論文]
  • 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 [査読有り][通常論文]
  • 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 [査読有り][通常論文]

MISC

  • Takashi Kawamura, Yoshinari Takegawa, Masahito Yamamoto IEEJ Transactions on Electronics, Information and Systems 137 (9) 1137 -1140 2017年 [査読無し][通常論文]
     
    This paper deals with some scientific approaches to curling. Curling is a winter sport called chess on ice. Players slide stones on a sheet of ice towards a target area. A stone is delivered with a gentle rotation, and then the stone curves in response to the rotation direction. The purpose of this game is to control the stone and obtain a higher score. There are still many aspects to analyze about curling, such as why a stone turns, how it curves, where it should be delivered at, how to develop several strategies, and so on. In order to find them, scientific approaches are necessary as well as intuitions and experiences. In these approaches, measurement, robotics, artificial intelligence, and information processing are included.
  • 岩館 健司, 鈴木 育男, 渡辺 美知子, 山本 雅人, 古川 正志, IWADATE Kenji, SUZUKI Ikuo, WATANABE Michiko, YAMAMOTO Masahito, FURUKAWA Masashi 精密工学会誌 82 (6) 595 -601 2016年06月
  • 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年
  • 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年
  • 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年
  • 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年
  • 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 2015年11月
  • 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 2015年11月
  • 加藤 修, 飯塚 博幸, 山本 雅人 情報科学技術フォーラム講演論文集 14 (2) 313 -314 2015年08月24日
  • 利根川 凛, 飯塚 博幸, 山本 雅人, 古川 正志, 大内 東 情報科学技術フォーラム講演論文集 14 (4) 479 -480 2015年08月24日
  • 内野 敬介, 飯塚 博幸, 山本 雅人 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)" 2015年05月17日 
    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.
  • 齋藤 宗太郎, 飯塚 博幸, 山本 雅人 ロボティクス・メカトロニクス講演会講演概要集 2015 "2A1 -M01(1)"-"2A1-M01(4)" 2015年05月17日 
    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.
  • 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講演概要集 2015 "2A1 -M04(1)"-"2A1-M04(2)" 2015年05月17日 
    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.
  • 加藤 修, 飯塚 博幸, 山本 雅人 知識ベースシステム研究会 104 7 -12 2015年03月01日
  • 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年
  • 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講演概要集 2013 "1P1 -M06(1)"-"1P1-M06(2)" 2013年05月22日 
    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.
  • 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講演概要集 2013 "1A2 -N04(1)"-"1A2-N04(4)" 2013年05月22日 
    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.
  • 家登 亮多, 山本 雅人, 古川 正志 ロボティクス・メカトロニクス講演会講演概要集 2013 "1A2 -N03(1)"-"1A2-N03(4)" 2013年05月22日 
    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.
  • 小川 純, 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講演概要集 2013 "1A2 -M01(1)"-"1A2-M01(4)" 2013年05月22日 
    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.
  • 松林 涼平, 古川 正志, 山本 雅人 ロボティクス・メカトロニクス講演会講演概要集 2013 "1A2 -N02(1)"-"1A2-N02(4)" 2013年05月22日 
    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.
  • 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 2013年03月03日 
    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.
  • 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 2013年03月03日 
    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.
  • 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 2012年03月06日 
    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.
  • 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 2011年10月15日 
    「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.
  • 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)" 2011年05月26日 
    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.
  • Tsuyoshi Mikami, Yohichiro Kojima, Masahito Yamamoto, Masashi Furukawa Proceedings of the 8th IASTED International Conference on Biomedical Engineering, Biomed 2011 17 -23 2011年 [査読有り][通常論文]
     
    Healthy people are generally breathing through nose during sleep, but oral breathing will be given rise to if the nasal cavity is gradually being closed. Nasal closure or even nasal congestion leads to open mouth during snoring, which causes the tongue base collapse, the origin of OSAS. Thus, if a simple home device with only a microphone can automatically monitor our snores at bedside and detect oral breathing during snoring, we can perceive an abnormality in our sleep condition easily and early detection and treatment of OSAS will be possible. In our previous work, we proposed some feature extraction methods for the stationary subsequences extracted from oral, nasal, and oronasal snoring sounds and analyzed their acoustic properties in detail. This paper addresses a snoring sound classification based on breathing route during snoring using Multilayer Perceptron, Support Vector Machines, and k-Nearest Neighbor method. According to our experiments, the SVM with Gaussian kernel acquires the best performance where 82.5% of the oral, 89.2% of the nasal, and 73.6 % of the oronasal snoring sounds are successfully classified.
  • 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 2010年10月02日
  • 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) 133 -138 2010年10月02日
  • 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講演概要集 2010 "2P1 -G06(1)"-"2P1-G06(2)" 2010年 
    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.
  • Tsuyoshi Mikami, Yohichiro Kojima, Masahito Yamamoto, Masahi Furukawa Proceedings of the SICE Annual Conference 3433 -3434 2010年 [査読有り][通常論文]
     
    This paper proposes a novel method to recognize breathing route during snoring (mouth, nose, and both) using the spectral properties of snoring sounds. Recent studies have reported that nasal closure determines an increase in the number of apneas during sleep. Thus, it is expected that if the seriousness of Obstructive Sleep Apnea Syndrome (OSAS) can roughly be estimated by a frequency of oral and oronasal snores at night, a simple device with only a microphone can automatically diagnose OSAS at bedside. In order to realize such device, it is necessary at first to recognize oral, nasal, and oronasal snores from the recorded sounds. Our proposed method can classify snoring sounds into nasal with 85.5%, oral with 86.1%, and oronasal with 70.7% respectively. © 2010 SICE.
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年10月03日
  • 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 2009年09月05日
  • 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 2009年09月05日
  • 茂尾 亮太, 鈴木 育男, 山本 雅人, 古川 正志 研究報告数理モデル化と問題解決(MPS) 2009 (7) 1 -6 2009年09月03日 
    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.
  • 三好 栄次, 鈴木 育男, 山本 雅人, 古川 正志 研究報告数理モデル化と問題解決(MPS) 2009 (8) 1 -6 2009年09月03日 
    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.
  • 高橋 麻希子, 渡辺 美知子, 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 997 -998 2009年08月25日
  • 森長 誠, 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 991 -992 2009年08月25日
  • 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 2009年08月25日 [査読無し][通常論文]
  • 中村 啓太, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "325 -1"-"325-6" 2009年08月03日 
    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.
  • 岩館 健司, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "327 -1"-"327-4" 2009年08月03日 
    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).
  • 森長 誠, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "324 -1"-"324-4" 2009年08月03日 
    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.
  • 大江 亮介, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "326 -1"-"326-6" 2009年08月03日 
    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.
  • 川上 祥, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "323 -1"-"323-4" 2009年08月03日 
    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.
  • 岩根 慎司, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "242 -1"-"242-4" 2009年08月03日 
    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.
  • 白石 直樹, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "317 -1"-"317-4" 2009年08月03日 
    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.
  • 尾尻 和也, 鈴木 育男, 山本 雅人, 古川 正志 Dynamics & Design Conference 2009 "319 -1"-"319-5" 2009年08月03日 
    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.
  • 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講演概要集 2009 "2A2 -C18(1)"-"2A2-C18(4)" 2009年05月25日 
    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.
  • 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講演概要集 2009 "2A2 -D12(1)"-"2A2-D12(4)" 2009年05月25日 
    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.
  • 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講演概要集 2009 "2A2 -D09(1)"-"2A2-D09(4)" 2009年05月25日 
    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.
  • 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 2009年05月24日 [査読無し][通常論文]
  • 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 2009年05月24日 [査読無し][通常論文]
  • 千葉 隆雄, 鈴木 育男, 山本 雅人, 古川 正志 全国大会講演論文集 71 247 -248 2009年03月10日
  • 三好 栄次, 鈴木 育男, 山本 雅人, 古川 正志 全国大会講演論文集 71 255 -256 2009年03月10日
  • 尾尻 和也, 鈴木 育男, 山本 雅人, 古川 正志 精密工学会春季大会学術講演会講演論文集 2009 557 -558 2009年02月25日
  • 森長 誠, 鈴木 育男, 山本 雅人, 古川 正志 精密工学会春季大会学術講演会講演論文集 2009 555 -556 2009年02月25日
  • 村田 賢太, 鈴木 育男, 山本 雅人, 古川 正志 日本知能情報ファジィ学会誌「知能と情報」 21 (2) 265 -276 2009年 [査読無し][通常論文]
  • 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年 
    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.
  • 岩田泰士, 鈴木育男, 山本雅人, 古川正志 情報処理学会全国大会講演論文集 71st (1) 2009年
  • 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 2008年09月19日
  • 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 2008年09月19日
  • 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 2008年09月19日
  • 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 2008年09月19日
  • 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 2008年09月10日
  • 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 35 -36 2008年09月06日
  • 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 7 -8 2008年09月06日
  • 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 5 -6 2008年09月06日
  • 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 33 -34 2008年09月06日
  • 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 31 -32 2008年09月06日
  • 森長 誠, 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 2008 883 -884 2008年09月01日
  • 中村 啓太, 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 2008 881 -882 2008年09月01日
  • 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 2008年09月01日 [査読無し][通常論文]
  • 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 2008年09月01日 [査読無し][通常論文]
  • 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 2008年08月20日
  • 原田 恵雨, 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) 441 -442 2008年08月20日
  • 森岡 淳, 古川 正志, 山本 雅人, 鈴木 育男 情報科学技術フォーラム講演論文集 7 (2) 447 -448 2008年08月20日
  • 川田 晋, 鈴木 育夫, 山本 雅人, 古川 正志 ロボティクス・メカトロニクス講演会講演概要集 2008 "2P2 -G22(1)"-"2P2-G22(4)" 2008年06月06日 
    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.
  • 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講演概要集 2008 "2P2 -G15(1)"-"2P2-G15(4)" 2008年06月06日 
    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.
  • 森長 誠, 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講演概要集 2008 "2P2 -G17(1)"-"2P2-G17(4)" 2008年06月06日 
    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.
  • 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 2008年06月05日 [査読無し][通常論文]
  • 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 2008年06月05日 [査読無し][通常論文]
  • 山本 雅人, 柏村 聡, 大内 東 情報処理学会論文誌数理モデル化と応用(TOM) 49 (4) 36 -44 2008年03月15日 
    著者らは,約16.8M のアドレス空間を持つDNA メモリ(Nested Primer Molecular Memory:NPMM)を構築した.このDNA メモリでは,データはNested PCR とよばれる実験的操作によって,正しいアドレスを指定したときのみ取り出せる.本論文では,DNA メモリのデータ取り出し操作であるアドレッシングの過程を数理モデル化し,容量の最大化を最適化問題として定式化することで,NPMM のスケールアップの限界を議論する.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.
  • 千葉 隆雄, 鈴木 育男, 山本 雅人, 古川 正志 全国大会講演論文集 70 217 -218 2008年03月13日
  • 山下 翔, 鈴木 育男, 山本 雅人, 古川 正志 全国大会講演論文集 70 429 -430 2008年03月13日
  • 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 2008年03月03日 [査読無し][通常論文]
  • 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 2008年03月03日 [査読無し][通常論文]
  • 大和田 純, 鈴木 育男, 山本 雅人 知識ベ-スシステム研究会 80 37 -41 2008年01月15日
  • 伊藤 聖修, 鈴木 育男, 山本 雅人 知識ベ-スシステム研究会 80 13 -18 2008年01月15日
  • 村田 賢太, 鈴木 育男, 山本 雅人 知識ベ-スシステム研究会 80 27 -32 2008年01月15日
  • 高谷 敏彦, 川村 秀憲, 山本 雅人 Ricoh technical report (34) 119 -130 2008年
  • 岩田泰士, 鈴木育男, 山本雅人, 古川正志 情報処理学会全国大会講演論文集 70th (1) 2008年
  • 山本 雅人, 柏村 聡, 大内 東 情報処理学会研究報告数理モデル化と問題解決(MPS) 2007 (86) 99 -102 2007年09月04日 
    著者らは,約 16.8M のアドレス空間をもつDNA メモリ(Nested Primer Molecular Memory: NPMM)を構築した.このDNA メモリでは,Nested PCR と呼ばれる実験的操作によって,正しいアドレスを指定したときのみデータが取り出せる.本論文では,NPMMメモリのデータ取り出し操作であるアドレッシングの過程を数理モデル化し,容量の最大化を最適化問題として定式化することで,NPMM のスケールアップの限界を議論する.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.
  • 高橋 春樹, 川村 秀憲, 山本 雅人, 大内 東 情報科学技術レターズ 6 157 -160 2007年08月22日
  • 丸山 加奈, 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 6 (1) 3 -6 2007年08月22日
  • 山下 晃弘, 川村 秀憲, 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 6 (2) 349 -352 2007年08月22日 [査読無し][通常論文]
  • 笠脇 裕人, 川村 秀憲, 山本 雅人, 高谷 雅彦, 大内 東 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)" 2007年05月11日 
    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.
  • 西岡 良太, 川村 秀憲, 山本 雅人, 高谷 敏彦, 大内 東 ロボティクス・メカトロニクス講演会講演概要集 2007 "2A2 -A08(1)"-"2A2-A08(4)" 2007年05月11日 
    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.
  • 山下 晃弘, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 106 (586) 75 -80 2007年03月15日 [査読無し][通常論文]
     
    近年個人観光客の増加に伴い,インターネットは飲食店や宿泊施設などの観光情報を収集する手段になっている.しかし,そこから個人の嗜好に適合した情報を探し出すことは非常に難しい.一方でインターネット上ではWeb2.0と呼ばれるユーザが主体となった新たなシステムが普及している.これらのシステムの特徴としてユーザからの情報提供,ユーザ間での情報共有,ユーザに適応した情報推薦などがあげられる.本稿では,これらの技術を応用し,ユーザ参加型の観光情報サイトの構築を目指す.本システムでは,観光情報を主観的な情報と客観的な情報に分離し,ユーザ間で共有可能なデータベースを構築する.その上で協調フィルタリングを用いた推薦システムを利用し,個人に適応したサイトを実現した.また本稿では,典型的な観光情報である飲食店情報に適応したプロトタイプシステムについて報告する.
  • 山下 晃弘, 川村 秀憲, 山本 雅人, 大内 東 情報処理学会研究報告. ICS, [知能と複雑系] 147 (26) 133 -138 2007年03月14日 [査読無し][通常論文]
     
    近年個人観光客の増加に伴い,インターネットは飲食店や宿泊施設などの観光情報を収集する手段になっている.しかし,そこから個人の嗜好に適合した情報を探し出すことは非常に難しい.一方でインターネット上ではWeb2.0と呼ばれるユーザが主体となった新たなシステムが普及している.これらのシステムの特徴としてユーザからの情報提供,ユーザ間での情報共有,ユーザに適応した情報推薦などがあげられる.本稿では,これらの技術を応用し,ユーザ参加型の観光情報サイトの構築を目指す.本システムでは,観光情報を主観的な情報と客観的な情報に分離し,ユーザ間で共有可能なデータベースを構築する.その上で協調フィルタリングを用いた推薦システムを利用し,個人に適応したサイトを実現した.また本稿では,典型的な観光情報である飲食店情報に適応したプロトタイプシステムについて報告する.
  • 丸山 加奈, 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 22 735 -738 2006年09月06日
  • 本田 崇智, 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 22 723 -726 2006年09月06日
  • 大柳 幸彦, 川村 秀憲, 山本 雅人 ファジィシステムシンポジウム講演論文集 22 717 -722 2006年09月06日
  • 皆川 良弘, 川村 秀憲, 山本 雅人 ファジィシステムシンポジウム講演論文集 22 689 -692 2006年09月06日
  • 長尾 光悦, 川村 秀憲, 山本 雅人 ファジィシステムシンポジウム講演論文集 22 815 -818 2006年09月06日
  • 本田 崇智, 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 5 (2) 77 -79 2006年08月21日
  • 森 康真, 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 5 (2) 85 -86 2006年08月21日
  • 飯村 直記, 山本 雅人, 田中 文昭, 亀田 充史, 大内 東 情報科学技術フォーラム一般講演論文集 5 (2) 431 -432 2006年08月21日
  • 皆川 良弘, 川村 秀憲, 山本 雅人, 高谷 敏彦, 大内 東 情報科学技術フォーラム一般講演論文集 5 (3) 301 -303 2006年08月21日
  • 山本 雅人, 大内 東 情報処理学会研究報告バイオ情報学(BIO) 2006 (64) 91 -96 2006年06月16日 
    AdlemanがDNAを用いた化学反応によって有向ハミルトン経路問題を解くことを実証して以降,DNAコンピューティングをさまざま旗組合せ問題へ適用しようとする試みがなされてきた.しかし,近年のDNAコンピューティング研究は,NP問題などの組合せ問題を解く方向から DNAの自己組織化(セルフアセンブル)の性質を用いてプーノ構造体を形成しようとする方向と生物のしくみを利用した人工遺伝子回路などを作ろうとする構成的生物学,または,合成生物学というべき方向にシフトしつつある.本稿では,セルフアセンブルによるDNAブーノ構造体の形成やナノ構造体を使った計算手法に関しての研究を概観し,ブーノ構造体形成のための塩基配列設計手法について述べる.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.
  • 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 2006年
  • 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) 2006年
  • 皆川 良弘, 川村 秀憲, 山本 雅人, 高谷 敏彦, 大内束 情報処理学会研究報告エンタテインメントコンピューティング(EC) 2005 (125) 1 -5 2005年12月17日 
    近年,室内バルーンロボットをエンタテインメントの分野に応用する研究が盛んになっている.エンタテインメント飛行を実現する場合,長時間の飛行を考える必要がある.バルーンロボットは浮力の原理を利用して空中に浮くため,重量があり長時間駆動可能であるバッテリーを搭載することができない.このため,長時間のエンタテインメント飛行を実現する方法として,バルーンロボットが自律的に充電を行う方法が考えられる.本研究は,室内バルーンロボットにおける自律充電システムの開発を行う.バルーンロボットの特徴を考慮した充電地点を作製し,充電地点へ向かうドッキング制御を実現する.In this paper, we propose a method of docking control of autonomous recharging for indoor balloon robot. Indoor banoon robot might be applied to entertainment in an event hall, such as synchronized flight of multiple balloon robots, interactive balloon robot. It might be necessary for long tern flight to achieve entertainment flight. However, indoor banoon 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 recInrging. For autonomous recharging, we designed charging station and docking control for indoor banoon robot.
  • 北 豊, 柏村 聡, 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 (1) 21 -23 2005年08月22日
  • 飯村 直記, 山本 雅人, 田中 文昭, 亀田 充史, 大内 東 情報科学技術フォーラム一般講演論文集 4 (2) 371 -373 2005年08月22日
  • 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 2005年08月22日
  • 柏村 聡, 山本 雅人, 亀田 充史, 大内 東 情報科学技術フォーラム一般講演論文集 4 (2) 367 -369 2005年08月22日
  • 本田 崇智, 山本雅人, 河村 秀憲, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2005 (78) 1 -4 2005年08月01日 
    Webサイトは、ディレクトリ型検索エンジンでも見られるように様々なカテゴリーに属している。一方Webサイトには、画造ファイルやリンク、テキストデータなどといった多くの情報が存在する。このような情報から得られる特徴やサイト中に含まれるキーワードによって、Webサイトはカテゴリーへと自動分類することが可能であると考えられる。そこで本研究では、宿泊施設や飲食店など観光に関するカテゴリーを対象とし、各カテゴリーごとに特異的にみられるWebサイトの特徴やキーワードの抽出を行い、それらを用いて自動分類の評価を行う。本手法が確立されれば、任意のWebサイトをカテゴリーに自動分類することが可能になると考えられる。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 investigates whether many websites belonging to 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.
  • 長尾光悦, 川村秀憲, 山本雅人, 大内東 情報処理学会研究報告知能と複雑系(ICS) 2005 (78) 23 -28 2005年08月01日 
    本稿では、効果的に観光復興を実現するため、GPSログからの周遊型慣行行動情報の抽出法を提案する。また、本研究では、レンタカーを利用した周遊型観光に焦点を当てる。提案法では、GPSに基づき収集された旅行者の位置情報を含むログで^多から各旅行者の滞在及び移動に関する基本行動情報の抽出を行う。この基本行動情報に基づき、現在の周遊型慣行の実態を把握するための分析を行う。更に、北海道における実際の周遊型観光旅行者からGPSログを収集し、これを用いた実験を通して提案法の有効性を検証する。最後に、提案法による抽出された基本行動情報に基づき、現在の北海道における周遊型観光を分析し、その考察を行う。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.
  • 本田 崇智, 山本 雅人, 川村 秀憲, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 105 (224) 1 -4 2005年07月25日 
    Webサイトは, ディレクトリ型検索エンジンでも見られるように様々なカテゴリーに属している.一方Webサイトには, 画像ファイルやリンク, テキストデータなどといった多くの情報が存在する.このような情報から得られる特徴やサイト中に含まれるキーワードによって, Webサイトはカテゴリーへと自動分類することが可能であると考えられる.そこで本研究では, 宿泊施設や飲食店など観光に関するカテゴリーを対象とし, 各カテゴリーごとに特異的に見られるWebサイトの特徴やキーワードの抽出を行い, それらを用いて自動分類の評価を行う.本手法が確立されれば, 任意のWebサイトをカテゴリーに自動分類することが可能になると考えられる.
  • 長尾 光悦, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 105 (224) 23 -28 2005年07月25日 
    本稿では, 効果的な観光振興を実現するため, GPSログからの周遊型観光行動情報の抽出法を提案する.また, 本研究では, レンタカーを利用した周遊型観光に焦点を当てる.提案法では, GPSに基づき収集された旅行者の位置情報を含むログデータから各旅行者の滞在及び移動に関する基本行動情報の抽出を行う.この基本行動情報に基づき, 現在の周遊型観光の実態を把握するための分析を行う.更に, 北海道における実際の周遊型観光旅行者からGPSログを収集し, これを用いた実験を通して提案法の有効性を検証する.最後に, 提案法により抽出された基本行動情報に基づき, 現在の北海道における周遊型観光を分析し, その考察を行う.
  • 川村 秀憲, 角田 久雄, 山本 雅人, 高谷 敏彦, 大内 東 ロボティクス・メカトロニクス講演会講演概要集 2005 89 -89 2005年06月09日
  • 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年
  • 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) 2005年
  • 皆川良弘, 川村 秀憲, 山本 雅人, 高谷 敏彦, 大内 東 ロボティクス・メカトロニクス講演会講演概要集 218 -218 2005年
  • 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 2004年06月15日 
    バルーンロボットは低エネルギーで3次元空間を安全に移動できるため,人の進入が困難な場所での観測活動やアミューズメントロボット分野などに応用可能であり,室内での新たなタイプのロボットとして注目を集めている.バルーンロボットは浮力により宙に浮くことができる利点を持つ反面,慣性が大きく,微小な気流の影響を受けやすいため制御が困難であるなどの問題点を持つ.このため,様々な外乱を含む環境下において適切な制御方法を確立することができれば,実用的なバルーンロボットへ向けて大きく前進すると考えられる.本論文では,室内での使用目的に適した機体,プロペラユニットの配置などを設計し,室内用のバルーンロボットシステムの構築を行った.また,環境中にランドマークを置き,カメラを用いて認識することで設定した目標地点で留まることと,離れた位置から目標地点へ移動する位置制御に対する実験を行った.そして,PD制御のパラメータの数値設定を数パターン用意して実験を行うことで,目標地点で留まる場合にはP制御が適しており,目標地点へ移動する場合にはPD制御が適していることを示した.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.
  • 篠原 敏夫, 川村 秀憲, 山本 雅人, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2004 (29) 137 -142 2004年03月17日 
    航空券,コンサートのチケット等の予約は,先に訪れた顧客から順に予約という資源を配分していく資源配分方法である.本稿ではこの資源配分方法において,顧客主導で予約調整を行い資源配分調整メカニズムを提案し,マルチエージェントシミュレーションによって様々な需要構造に対するメカニズムの有効性を検証する.Reservation systems, such as an airline ticket and a concert ticket, are first-come first-served resource allocation mechanisms. In this paper, we propose a resource allocation sdjustment mechanism which performs rservation adjustment by customent by cutomer driven, and verify effectiveness of the mechanism for various demand structures by the multi-agent simulation.
  • 柳沢 紀子, 川村 秀憲, 山本雅人, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2004 (29) 101 -106 2004年03月16日 
    マルチエージェントシステムの研究ではこれまで,タスク達成率や利得和といった指標によりシステムの分析が行われてきた.このような指標はタスク遂行という意味では重要な一指標といえるが,複雑な系に現れる現象の本文をとらえ,またそれをシステム構成に役立てることを考えた券合,これらの指撫では系に特化した分析しか行えず不十分であると考えられる.近年このような観点からシステムのダイナミクスを定l的に分析する方法として熱力学的な手法を用いた巨視的分析などが模索され始めている.そこで本研究では特にシステムの本質をエントロビーと相互情報量という2つの微視的指標を用いてとらえ,それらとシステムの巨視的ダイナミクスとの関連性を分析する方法を検証することを目的とし,その第一段階として簡単なゲーム衆境での検証実験を行っている・その結果,マクロな指標とミクロな相互什報lという指標の関係性を観察することができ,相互情報量を用いた相互作用の定量化によるシステム分析方法が有効な指標となることを示す.In most presented researches on multi agent systems, the macroscopic system performance is discussed wieth 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 characteristcs. Consequently, we verify the validity of quantitve analysis using entropy and mutual information.
  • 長尾 光悦, 川村 秀憲, 山本 雅人, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2004 (29) 7 -12 2004年03月15日 
    本稿では,観光動態情報の獲得を意図したGPSログデータマイニング法を提案する.本研究においては,近年の個人型観光へのシフトに伴い利用が急増しているレンタカーによる観光活動において,GPSにより収集されたログデータから観光動態情報として活用可能な個人行動情報の抽出を行う.現在,GPSはSAの除去が実施され,高精度での位置測位が可能である.しかしながら,GPSの単独測位においては電離層の影響,大気の揺らぎ,マルチパスの影響により誤差が生じる.更には,GPS受信機の状態による記録エラー,遮蔽物による測位不能などを避けられないのが現状である.提案手法は,これらの状況に対してロバストであり,GPSログデータから適切に個人行動情報を抽出することが可能である.また,北海道観光を行った旅行者から収集したGPSログを用い提案手法の有効性の検証を行う.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.
  • 篠原 敏夫, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 103 (726) 1 -6 2004年03月10日 
    航空券,コンサートチケット等の予約は,先に訪れた顧客から順に予約という資源を配分していく資源配分方法である.本稿ではこの資源配分方法において,顧客主導で予約調整を行う資源配分調整メカニズムを提案し,マルチエージェントシミュレーションによって様々な需要構造に対するメカニズムの有効性を検証する.
  • 柳沢 紀子, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 103 (725) 71 -76 2004年03月09日 
    マルチエージェントシステムの研究ではこれまで,タスク達成率や利得和といった指標によりシステムの分析が行われてきた.このような指標はタスク遂行という意味では重要な一指標といえるが,複雑な系に現れる現象の本質をとらえ,またそれをシステム構成に役立てることを考えた場合,これらの指標では系に特化した分析しか行えず不十分であると考えられる.近年このような観点からシステムのダイナミクスを定量的に分析する方法として熱力学的な手法を用いた巨視的分析などが模索され始めている.そこで本研究では特にシステムの巨視的ダイナミクスとの関連性を分析する方法を検証することを目的とし,その第一段階として簡単なゲーム環境での検証実験を行っている.その結果,マクロな指標とミクロな相互情報量という指標の関係性を観察することができ,相互情報量を用いた相互作用の定量化によるシステム分析方法が有効な指標となることを示す.
  • 長尾 光悦, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 103 (724) 7 -12 2004年03月08日 
    本稿では,観光動態情報の獲得を意図したGPSログデータマイニング法を提案する.本研究においては,近年の個人型観光へのシフトに伴い利用が急増しているレンタカーによる観光活動において,GPSにより収集されたログデータから観光動態情報として活用可能な個人行動情報の抽出を行う.現在,GPSはSAの除去が実施され,高精度での位置測位が可能である.しかしながら,GPSの単独測位においては電離層の影響,大気の揺らぎ,マルチパスの影響により誤差が生じる.更には,GPS受信機の常態による記録エラー,遮蔽物による測位不能などを避けられないのが現状である.提案方法は,これらの状況に対してロバストであり,GPSログデータから適切に個人行動情報を抽出することが可能である.また,北海道観光を行った旅行者から収集したGPSログを用い提案手法の有効性の検証を行う.
  • 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年
  • 高木 耕一郎, 山本 雅人, 中津川 雅史, 川村 秀憲, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 103 (305) 31 -36 2003年09月15日 
    WWWの急速な発達により、WWW上での情報検索はますます困難となってきている。特にあるカテゴリーに属するウェブページを発見することは難しい。例えば旅行者が訪れようとしている地域の宿泊施設の公式ホームページを見つけることは困難である。そのような目的は既存の検索エンジンに適さない。なぜならば既存の検索エンジンはキーワードを用いており、宿泊施設の公式ホームページは共通のキーワードを含まないからである。本稿で我々は宿泊施設の公式ホームページを収集するシステムを提案する。それは任意の地域を対象とし、さらに公式ホームページであるか否かも判断することができる。我々は北海道のいくつかの地域に本システムを適用した。また、ルールを変更し他の対象に対するシステムを作成することもできる。これは動的インターネットディレクトリ作成の第一歩である。
  • 高木 耕一郎, 山本 雅人, 中津川 雅史, 川村 秀憲, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2003 (90) 99 -104 2003年09月14日 
    WWWの急速な発展により、WWW上での情報検索はますます困難となってきている。特にあるカテゴリーに属するウェブページを発見することは難しい。例えば旅行者が訪れようとしている地域の宿泊施設の公式ホームページを見つけることは困難である。そのような目的は既存の検索エンジンに適さない。なぜならば既存の検索エンジンはキーワードを用いており、宿泊施設の公式ホームページは共通のキーワードを含まないからである。本稿で我々は宿泊施設の公式ホームページを収集するシステムを提案する。それは任意の地域を対象とし、更に公式ホームページであるか否かをも判断することができる。我々は北海道のいくつかの地域に本システムを適用した。また、ルールを変更し他の対象に対するシステムを作成することもできる。これは動的インターネットディレクトリ作成の第一歩である。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 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 website 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 anddetect 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.
  • 濱田 貴広, 川村 秀憲, 山本 雅人, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2003 (8) 145 -150 2003年01月29日 
    個々のプレイヤーの相互作用が,囚人のジレンマゲームで表わされる社会に置いて,タグという明示的には意味を持たない外見上の特徴に基づく意思決定が,集団全体に及ぼす影響を考察する.個々のプレイヤーは「0」または「1」という単純なタグを持っていて,どの相手からも可視である.このタグをもプレイヤーの集団に占める割合の違いが,つまり多数派と少数派が無作為に相互作用することが,集団に対してどのような影響を及ぼすのか,このような環境下でプレイヤーが高い利得を得るには多数派が有利なのか少数派が有利なのかということを,戦略の進化を同集団のプレイヤー間でのみ行なうという設定で計算機実験により吟味する.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 three 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 menbers having the same tag, and consider which is more advantageous between the minority group and majority one.
  • 濱田 貴広, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 102 (615) 7 -12 2003年01月24日 
    個々のプレイヤーの相互作用が,囚人のジレンマゲームで表わされる社会において,タグという明示的には意味を持たない外見上の特徴に基づく意思決定が,集団全体に及ぼす影響を考察する.個々のプレイヤーは「O」または「1」という単純なタグを持っていて,どの相手からも可視である.このタグをもプレイヤーの集団に占める割合の違いが,つまり多数派と少数派が無作為に相互作用することが,集団に対してどのような影響を及ぼすのか,このような環境下でプレイヤーが高い利得を得るには多数派が有利なのか少数派が有利なのかということを,戦略の進化を同集団のプレイヤー間でのみ行なうという設定で計算機実験により吟味する.
  • 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年
  • 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年
  • 濱田 貴広, 川村 秀憲, 山本 雅人, 大内 東 情報処理学会研究報告知能と複雑系(ICS) 2002 (1) 127 -134 2002年01月09日 
    目的が不透明な相手とゲームをする際,何が有効な情報なのかも判断しにくいため自己の効用を増すためには価値観に基づいて意思決定をすることになる。そのような相手をマーケットと考えた場合,それに対峙するプレイヤーはおそらくマーケットというプレイヤーの明確な意思決定システムはわからないため,プレイヤーごとに異なって認識するものと思われる。同じ状況を異なって認識するプレイヤー間の相互作用が結果としてどのような振舞いを引き起こすかを考察する。そして,そのような状況下で,プレイヤー同士の相互作用する規模の違いが全体にどのような影響を及ぼすかを考察する。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 plyaers' 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 vehavior of players when against the entity whose decision-making system is not clearly known to them.
  • 濱田 貴広, 川村 秀憲, 山本 雅人, 大内 東 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 101 (536) 33 -40 2002年01月03日 
    目的が不透明な相手とゲームをする際, 何が有効な情報なのかも判断しにくいため自己の効用を増すためには価値観に基づいて意思決定をすることになる.そのような相手をマーケットと考えた場合, それに対峙するプレイヤーはおそらくマーケットというプレイヤーの明確な意思決定システムはわからないため, プレイヤーごとに異なって認識するものと思われる.同じ状況を異なって認識するプレイヤー間の相互作用が結果としてどのような振舞いを引き起こすのかを考察する.そして, そのような状況下で, プレイヤー同士の相互作用する規模の違いが全体にどのような影響を及ぼすのかを考察する.
  • 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 2001年05月01日
  • 川村 秀憲, 山本 雅人, 大内 東, 車谷 浩一 情報処理学会研究報告知能と複雑系(ICS) 2001 (1) 61 -66 2001年01月10日 
    近年,経済に代表される社会システムの研究でエージェントベースシミュレーションが盛んになりつつある.エージェントベースシミュレーションは,理論・実験に続く第3の研究パラダイムとして着目されており,エージェントのミクロ・マクロな振る舞い,そしてそれらの関係を解明する鍵である創発現象解明へ向けて,研究が行われている.しかし,各研究において様々なモデルが乱立し,統一的な解釈を与えるのが困難であること,モデルの透明性・シミュレーションの再現性等の問題点が指摘されている.そこで本報告では,経済・金融の汎用的シミュレータとモジュール型ツール群の実現へ向けたX-Economyサーバ・クライアントシステムの開発と,それを用いた仮想金融市場のプロトタイプについて報告する.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.
  • 川村 秀憲, 山本 雅人, 大内 東, 車谷 浩一 電子情報通信学会技術研究報告. AI, 人工知能と知識処理 100 (529) 61 -66 2001年01月03日 
    近年, 経済に代表される社会システムの研究でエージェントベースシミュレーションが盛んになりつつある.エージェントベースシミュレーションは, 理論・実験に続く第3の研究パラダイムとして着目されており, エージェントのミクロ・クロな振る舞い, そしてそれらの関係を解明する鍵である創発現象解明へ向けて, 研究が行われている.しかし, 各研究において様々なモデルが乱立し, 統一的な解釈を与えるのが困難であること, モデルの透明性・シミュレーションの再現性等の問題点が指摘されている.そこで本報告では, 経済・金融の汎用的シミュレータとモジュール型ツール群の実現へ向けたX-Economyサーバ・クライアントシステムの開発と, それを用いた仮想金融市場のプロトタイプについて報告する.
  • 田中 卓, 川村 秀憲, 山本 雅人, 大内 東 医療情報学連合大会論文集 20 664 -665 2000年11月23日
  • 河合 崇, 川村 秀憲, 山本 雅人, 大内 東 医療情報学連合大会論文集 20 782 -783 2000年11月23日
  • IIZUKA Hiroyuki, SUZUKI Keiji, YAMAMOTO Masahito, OHUCHI Azuma IEICE transactions on fundamentals of electronics, communications and computer sciences 83 (6) 1075 -1082 2000年06月25日 
    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.
  • 鈴木 恵二, 山下 倫央, 山本 雅人, 大内 東 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 2000年01月21日
  • 長尾 光悦, 山本 雅人, 鈴木 恵二, 大内 東 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 2000年01月21日
  • 川村 秀憲, 山本 雅人, 鈴木 恵二, 大内 東 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 2000年01月21日
  • 本山 恵子, 鈴木 恵二, 山本 雅人, 大内 東 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 2000年01月21日
  • 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年 
    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。
  • 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 1999年10月15日
  • 本山 恵子, 鈴木 恵二, 山本 雅人, 大内 東 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 1999年10月
  • 土田 安紘, 鈴木 恵二, 山本 雅人, 大内 東 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 1999年10月
  • 平本 雅俊, 鈴木 恵二, 山本 雅人, 大内 東 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 1999年10月
  • 飯塚 博幸, 斉藤 一, 山本 雅人, 鈴木 恵二, 大内 東 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 1999年01月18日
  • 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 1998年10月15日
  • 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 1998年05月27日
  • 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年
  • 川村 秀憲, 山本 雅人, 鈴木 恵二, 大内 東 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 1997年11月10日
  • 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 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 1997年11月10日
  • 長尾 光悦, 山本 雅人, 鈴木 恵二, 大内 東 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 1997年11月10日
  • 荒木 肇, 三田村 保, 山本 雅人, 鈴木 恵二, 大内 東, 加地 太一 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 1997年11月10日
  • 大内 東, 山本 雅人, 鈴木 恵二, 三田村 保 生物物理 37 S129 1997年10月
  • 岡田 信人, 大内 東, 山本 雅人, 鈴木 恵二, 三田村 保 生物物理 37 S129 1997年10月
  • 堤 香織, 田中 貴美枝, 柴 肇一, 棟方 正信, 平山 拓央, 山本 雅人, 大内 東, 滝谷 重治 生物物理 37 S62 1997年10月
  • 田中 剛範, 山本 雅人, 三田村 保, 大内 東, 大柳 俊夫, 松嶋 範男 全国大会講演論文集 54 423 -424 1997年03月12日 
    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。
  • 鎌田 慎, 三田村 保, 山本 雅人, 大内 東 全国大会講演論文集 54 403 -404 1997年03月12日 
    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.
  • 岡田 信人, 山本 雅人, 大内 東, 柴 肇一, 棟方 正信, 滝谷 重治 全国大会講演論文集 54 279 -280 1997年03月12日 
    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.
  • 山本 雅人, 大内 東 全国大会講演論文集 54 329 -330 1997年03月12日 
    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.
  • 山本 雅人, 大柳 俊夫, 大内 東 全国大会講演論文集 53 143 -144 1996年09月04日 
    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.
  • 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年
  • 山本 雅人, 大柳 俊夫, 大内 東 全国大会講演論文集 50 1 -2 1995年03月15日 
    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.
  • 山本 雅人, 大柳 俊夫, 大内 東 電子情報通信学会論文誌. A, 基礎・境界 77 (11) 1577 -1584 1994年11月25日 
    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.
  • 大柳 俊夫, 山本 雅人, 大内 東 全国大会講演論文集 48 1 -2 1994年03月07日 
    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.
  • 山本 雅人, 大柳 俊夫, 大内 東 全国大会講演論文集 48 3 -4 1994年03月07日 
    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.
  • 大柳 俊夫, 山本 雅人, 大内 東 情報処理学会論文誌 34 (12) 2464 -2473 1993年12月15日 
    命題論理の充足可能性問題(以下SATと呼ぷ)は、計算複雑度がNP一完全である代表的な問題として、情報処理の分野における墓本酌な問題の一つにあげられている。この問題に対して、Davis?Putnamの方法に代表される記号的方法に関する研究がこれまで盛んに行われている。最近になって、OR技法の一つである整数計画法や線形計画法に基づく研究が主にORの分野の研究者によって行われている。この方法は記号的方法に対し定量的方法と呼ばれ、本来計算機が得意とする数値的な処理によりSATを高遠に解くことを目指したものである。SATに対する定量的方法に関するこれまでの研究として、1)Branch and Broundに基づく方法、2)切除平面に基づく方法、3)内点法に基づく方法、4)陰的列挙法に基づく方法、などが提案されている。本論文では、陰的列挙法に基づく新しいSATアルゴリズムIEMSATを提案する。そして、SATに対する代表的な方法であるDavis?Putnamと提案アルゴリズムの関係を詳細に調べ両方法の対応付けを行う。この結果は、一般のO-1整数計画問題に対する陰的列挙法をSAT向きに特殊化することで、Davis・Putnamとほぽ同じ方法が導げることを示すものである。また、IEMSAT為よびDavis?Putnamの方法を用いた計算機実験を行い、IEMSATの有効性を検証する。
  • 山本 雅人, 大柳 俊夫, 大内 東 北海道大学工学部研究報告 (165) p73 -82 1993年07月
  • 大柳 俊夫, 山本 雅人, 大内 東 全国大会講演論文集 46 11 -12 1993年03月01日 
    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。
  • 大柳 俊夫, 山本 雅人, 栗原 正仁, 大内 東 全国大会講演論文集 45 37 -38 1992年09月28日 
    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.
  • 大内 東, 大柳 俊夫, 山本 雅人 全国大会講演論文集 44 11 -11 1992年02月24日 
    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.
  • 大柳 俊夫, 山本 雅人, 大内 東 全国大会講演論文集 44 13 -14 1992年02月24日 
    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.
  • 山本 雅人, 大柳 俊夫, 大内 東 全国大会講演論文集 44 15 -16 1992年02月24日 
    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.

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