Researcher Database

Yuzuru Sato
Research Institute for Electronic Science Research Center of Mathematics for Social Creativity
Associate Professor

Researcher Profile and Settings

Affiliation

  • Research Institute for Electronic Science Research Center of Mathematics for Social Creativity

Job Title

    Associate Professor

E-mail

  • ysato@math.sci.hokudai.ac.jp

URL

Research funding number

  • 30342794

ORCID ID

  • 0000-0002-6753-2218

Research Interests

  • Noise-induced phenomena   Stochastic chaos   Random dynamical systems   Complex systems   Spatio-temporal chaos   Fluctuation and noise   Chaos   Dynamical systems   

Research Areas

  • Applied physics / Engineering fundamentals
  • Mathematics / General mathematics (including Probability theory/Statistical mathematics)
  • Physics / Mathematical physics/Fundamental condensed matter physics
  • Informatics / Sensitivity informatics/Soft computing / 複雑系

Academic & Professional Experience

  • 2006 - Today    Hokkaido UniversityRIES/Department of MathematicsAssociate professor
  • 2002 - 2006    Santa Fe InstitutePostdoctoral Fellow
  • 2001 - 2002    RIKENSpecial Postdoctoral Researcher
  • 2000 - 2001    University of Tokyo / JSPSPostdoctoral researcher

Education

  • 1997/04 - 2000/03  University of Tokyo  Graduate School of Arts and Sciences

Association Memberships

  • Society for Industrial and Applied Mathematics   American Physical Society   日本応用数理学会   日本物理学会   

Research Activities

Published Papers

  • Random basin in dice roll
    Y. Sato, N. Matsunaga
    RIMS Technical Report 1942 1 - 10 2015 [Not refereed][Not invited]
  • Kota Hiratsuka, Yuzuru Sato, Zin Arai
    NOLTA 5 (4) 410 - 423 2014 [Refereed][Not invited]
  • Random dynamical systems modeling for brain wave synchrony
    Yuzuru Sato
    Proc. of NOLTA 2013 395 - 398 2013 [Refereed][Not invited]
  • Robust computation in two dimensional neural field
    Yuzuru Sato, Shun-ichi Amari
    Advances in Cognitive Neurodynamics 123 - 129 2013 [Refereed][Not invited]
  • Computability and Complexity of Julia Sets
    Kota Hiratsuka, Yuzuru Sato, Zin Arai
    Proc. of NOLTA 2013 2 - 5 2013 [Refereed][Not invited]
  • Random dynamics from time series
    Yuzuru Sato
    RIMS Technical Report 1827 24 - 32 2012 [Not refereed][Not invited]
  • Random dynamics from time-serieses of physiological rhythms.
    Yuzuru Sato, Kazuhiro Matsumoto
    2012 497 - 500 2012 [Refereed][Not invited]
  • Random dynamics from time-seriese of rotating fluid
    Y. Sato, M. Iima, Y. Tasaka
    Hokkaido University Technical Report 979 2011 [Not refereed][Not invited]
  • M. Iima, Y. Iijima, Y. Sato, Y. Tasaka
    Theor. Appl. Mech. Jpn. 59 187 - 193 2011 [Refereed][Not invited]
  • Miguel Fuentes, Yuzuru Sato, Constantino Tsallis
    Physics Letters A 375 (33) 2988 - 2991 2011 [Refereed][Not invited]
     Research paper (scientific journal)
  • Yao Lu,Yuzuru Sato,Shun-ichi Amari
    Neural Computation 23 (5) 1248 - 1260 2011 [Refereed][Not invited]
  • Random Dynamics from Time Seriese of Rotating Fluid
    Y. Sato, M. Iima, Y. Tasaka
    Proceedings of JSIAM 08 317 - 318 2008 [Not refereed][Not invited]
     Research paper (international conference proceedings)
  • Extensivity and entropy production
    C. Tsallis, M. Gell-Mann, Y. Sato
    Europhysics News 36 (6) 186 - 189 2005 [Refereed][Not invited]
  • Yuzuru Sato,Constantino Tsallis
    I. J. Bifurcation and Chaos 16 (6) 1727 - 1738 2005 [Refereed][Not invited]
  • Yuzuru Sato,Takashi Ikegami
    Minds and Machines 14 (2) 133 - 143 2004 [Refereed][Not invited]
  • Sato Y, Akiyama E, Farmer JD
    Proceedings of the National Academy of Sciences of the United States of America 99 4748 - 4751 0027-8424 2002/04 [Refereed][Not invited]
  • Sato Y, Crutchfield JP
    Physical review. E, Statistical, nonlinear, and soft matter physics 67 (1,Pt.2) 015206  1539-3755 2003/01 [Refereed][Not invited]
  • Tsallis C, Gell-Mann M, Sato Y
    Proceedings of the National Academy of Sciences of the United States of America 102 (43) 15377 - 15382 0027-8424 2005/10 [Refereed][Not invited]
  • Yuzuru Sato, Nihat Ay
    819 2006/11 [Not refereed][Not invited]
     
    Dynamics of information flow in adaptively interacting stochastic processes is studied. We give an extended form of game dynamics for Markovian processes and study its behavior to observe information flow through the system. Examples of the adaptive dynamics for two stochastic processes interacting through matching pennies game interaction are exhibited along with underlying causal structure.
  • 109 (269) 221 - 223 09135685 2009/11 [Not refereed][Not invited]
  • 1688 137 - 143 2010/05 [Not refereed][Not invited]
  • Yuzuru Sato, Eizo Akiyama, James P. Crutchfield
    Physica D 210 21 - 57 2005/08 [Refereed][Not invited]
     Research paper (scientific journal) 
    We derive a class of macroscopic differential equations that describe collective adaptation, starting from a discrete-time stochastic microscopic model. The behavior of each agent is a dynamic balance between adaptation that locally achieves the best action and memory loss that leads to randomized behavior. We show that, although individual agents interact with their environment and other agents in a purely self-interested way, macroscopic behavior can be interpreted as game dynamics. Application to several familiar, explicit game interactions shows that the adaptation dynamics exhibits a d...
  • Yuzuru Sato,Makoto Taiji,Takashi Ikegami
    Unconventional Models of Computation, UMC'2K, Proceedings of the Second International Conference, Brussel, Belgium, 13-16 December 2000 234 - 247 2000 [Refereed][Not invited]
  • Yuzuru Sato,Takashi Ikegami
    J. UCS 6 (9) 881 - 905 2000 [Refereed][Not invited]
  • Y. Sato, M. Taiji, T. Ikegami
    Computer Physics Communications 121 51 - 53 1999 [Refereed][Not invited]
     Research paper (scientific journal)
  • Undecidability of the Imitation Game
    Y. Sato, T. Ikegami
    Proceedings of Symposium on Imitation in Animals and Artifacts 157 - 159 1999 [Refereed][Not invited]
  • Toru Ohira,Yuzuru Sato,Jack D. Cowan
    Advances in Neural Information Processing Systems 12, [NIPS Conference, Denver, Colorado, USA, November 29 - December 4, 1999] 314 - 320 1999 [Refereed][Not invited]
  • Toru Ohira, Yuzuru Sato
    Physical Review Letters 82 2811 - 2815 1998/07 [Refereed][Not invited]
     Research paper (scientific journal) 
    We propose here a stochastic binary element whose transition rate depends on its state at a fixed interval in the past. With this delayed stochastic transition this is one of the simplest dynamical models under the influence of ``noise'' and ``delay''. We demonstrate numerically and analytically that we can observe resonant phenomena between the oscillatory behavior due to noise and that due to delay.
  • Self-similar Sets as Satisfiable Boolean Expressions
    Y. Sato, M. Taiji, T. Ikegami
    Unconventional Models of Computation 352 - 370 1998 [Refereed][Not invited]

Books etc

Conference Activities & Talks

  • Chaos in random and non-autonomous dynamical systems  [Invited]
    Yuzuru Sato
    Complex systems summer school  2015/07
  • Dynamics of Neural Field  [Invited]
    Yuzuru Sato
    Seminar at University of Tokyo  2015/03
  • Random strange attractors and stochastic chaos  [Invited]
    Yuzuru Sato
    Workshop on dynamical systems and computation  2015/03
  • Random dynamical systems approaches to noise-induced phenomena  [Invited]
    Yuzuru Sato
    Seminar at University of Sussex Brighton UK  2014/11
  • Random basin in dice roll  [Invited]
    Yuzuru Sato
    Workshop on Theory and Applications of Random/Nonautonomous Dynamical Systems  2014/09
  • Random dynamics from time seiries of rotating fluids  [Not invited]
    Yuzuru Sato
    Workshop on Physical Origins of Correlated Extreme Events  2014/06
  • Random dynamical systems approaches to noise-induced phenomena  [Invited]
    Yuzuru Sato
    Seminar at Loughborough University Loughborough  2014/05
  • Random dynamical systems approaches to noise-induced phenomena  [Invited]
    Yuzuru Sato
    Mini Conference on Glassy and Complex Systems  2014/05
  • Random dynamical systems approaches to noise-induced phenomena   [Not invited]
    Yuzuru Sato
    Open Statistical Physics  2014/03
  • Random dynamical systems approaches to noise-induced phenomena   [Invited]
    Yuzuru Sato
    Dynamical Systems, Fluid Dynamics and Lagrangian Coherent Structures  2014/03
  • Random dynamical systems approaches to noise-induced phenomena  [Invited]
    Yuzuru Sato
    2014/02
  • Random basin in dice roll  [Invited]
    Yuzuru Sato
    2014/02
  • Stability and diversity in collective adaptation  [Invited]
    Yuzuru Sato
    Seminar at Manchester University  2014/02
  • Real number computation and dynamical systems  [Invited]
    Yuzuru Sato
    Dynamical systems and computation  2014/01
  • Random dynamics from time series  [Invited]
    Yuzuru Sato
    SIAM Conference on Applications of Dynamical systems  2013/05
  • Noise-induced phenomena in one-dimensional maps  [Invited]
    Yuzuru Sato
    Seminar at Hitotsubashi University  2013/04
  • Asymmetric game dynamics and its applications  [Invited]
    Yuzuru Sato
    Seminar at King’s College London  2013/04
  • Randomness in noised dynamical systems  [Invited]
    Yuzuru Sato
    Ergodic theory, information theory and computer sciences  2013/04
  • Partial Control of Chaos and Continuity of Safe Sets  [Not invited]
    G. Wang, Y. Sato
    Dynamics Days US  2013/01
  • Randomness of Perturbed Dice Throw Dynamics  [Not invited]
    N. Matsunaga, Y. Sato
    Dynamics Days US  2013/01
  • Random Dynamics from a Time Series of Physiological Rhythms  [Invited]
    Yuzuru Sato
    NOLTA2012  2012/10
  • Asymmetric game dynamics and its applications  [Invited]
    Yuzuru Sato
    CICS Colloquium, Universidad del Desarrollo  2012/10
  • Random dynamical systems approaches to noise-induced phenomena  [Invited]
    Yuzuru Sato
    Summer Workshop on Artificial Minds and Real Brains  2012/08
  • Noise-induced phenomena and their applications  [Invited]
    Yuzuru Sato
    Workshop on Open dynamical systems: Ergodic Theory, Probabilistic Methods and Applications, BIRS Banff Canada  2012/04
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Seminar at Soongsil University Seoul, Korea  2012/04
  • Noise-induced phenomena and their applications: interaction between deterministic chaos and stochastic randomness  [Invited]
    Yuzuru Sato
    Nonlinear Science Colloquium at Waseda University  2012/04
  • Noise-induced phenomena and their applications: interaction between deterministic chaos and stochastic randomness  [Invited]
    Yuzuru Sato
    International workshop on Anomalous Statistics, Generalized Entropies, and Information Geometry  2012/03
  • Random dynamics from time-series and its applications  [Invited]
    Yuzuru Sato
    NOLTA2011  2011/09
  • Noise-induced phenomena in one-dimensional maps  [Not invited]
    Yuzuru Sato
    Weak Chaos, Infinite Ergodic Theory, and Anomalous Dynamics  2011/08
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Kyoto interdisciplinary Dynamics Seminar  2011/07
  • Robust Computation in Two-dimensional Neural Field  [Invited]
    Yuzuru Sato
    The 3rd International Conference on Cognitive Neurodynamics  2011/06
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    SIAM Conference on Applications of Dynamical systems  2011/05
  • Random nonlinear phenomena and its applications  [Invited]
    Yuzuru Sato
    Yakushima Workshop  2011/04
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Seminar at Department of Applied Mathematics at the University of Colorado at Boulder  2011/04
  • Asymmetric game dynamics and its extensions  [Not invited]
    Yuzuru Sato
    Game theory workshop  2011/03
  • Noise-induced statistical periodicity and its applications  [Invited]
    Yuzuru Sato
    Dynamics of Complex Systems  2011/03
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    NIMS Hot Topics Workshop on Applied Dynamical Systems  2010/12
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Max-Planck Institute, Mathematics in the Sciences  2010/12
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Kagoshima workshop on nonlinear and Nonequilibrium dynamics  2010/10
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    RIKEN Mathematical Science Workshop  2010/09
  • Robust computation in activation-inhibition field  [Invited]
    Yuzuru Sato
    The 9th international conference on unconventional computation  2010/06
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Niseko workshop on mathematical biology  2010/04
  • Noise-induced phenomena in one dimensional maps  [Not invited]
    Yuzuru Sato
    2010/03
  • Noise-induced phenomena in one dimensional maps: hidden fragility in nonlinear dynamics  [Invited]
    Yuzuru Sato
    Sapporo winter school on nonlinear science  2010/02
  • Stability and diversity in collective adaptation  [Invited]
    Yuzuru Sato
    Chaos revolution in Science  2009/12
  • Statistics and dynamical analysis of surface switching in rotating fluid  [Not invited]
    Y. Tasaka, M. Iima, Y. Sato
    16th International Couette-Taylor Workshop Princeton  2009/09
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Dynamics of Complex Systems  2009/08
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Behavior and Logic of Cellular Systems, RIKEN  2009/04
  • High-dimensional chaotic dynamics in an N-person game  [Invited]
    Yuzuru Sato
    Seminar at Kyushu University  2009/04
  • Noise-induced phenomena in one dimensional maps  [Invited]
    Yuzuru Sato
    Workshop: Fluctuation and Noise in Living Organisms, RIKEN  2009/04
  • Chaos in function dynamics  [Invited]
    Yuzuru Sato
    Seminar at GCOE workshop, Kobe University  2009/04
  • Random Dynamics from Time Serieses of Rotating Fluid  [Not invited]
    Yuzuru Sato
    2008/09
  • Random Dynamics from Time Serieses of Rotating Fluid  [Invited]
    Yuzuru Sato
    ynamics Days Asia-Pacific  2008/09
  • Random Dynamics from Time Serieses of Rotating Fluid  [Invited]
    Yuzuru Sato
    2008/09
  • Limit of Analog Computation  [Invited]
    Yuzuru Sato
    Seminar at University of Tokyo  2008/04
  • Re-visiting Noise-induced Order  [Not invited]
    Yuzuru Sato
    Artificial Life: Half-way through  2008/04
  • Noise-induced Phenomena in one-dimensional maps  [Not invited]
    Yuzuru Sato
    Seminar at ASI, RIKEN  2008/04
  • Function Dynamics: An Introductory Review  [Not invited]
    Yuzuru Sato
    2007/11
  • Heteroclinic Cycles in N-person Game Dynamics  [Invited]
    Yuzuru Sato
    inisymposium at SIAM Conference on Application of Dynamical Systems Snowbird, Utah USA  2007/05
  • N-person Game Dynamics  [Invited]
    Yuzuru Sato
    Seminar at Santa Fe Institute  2007/04
  • Stability and Diversity in Collective Adaptation  [Not invited]
    Yuzuru Sato
    Seminar at Department of Physical Chemistry Fritz Haber Institute  2006/04
  • patiotemporal Intermittency and its Application to Problems of Memory and Learning  [Invited]
    Yuzuru Sato
    Seminar at JAIST  2005
  • Dynamics of learning in Rock-Scissors-Paper game  [Invited]
    Yuzuru Sato
    Seminar at KNU Daegu, Korea  2005
  • tability and Diversity in Collective Adaptation  [Invited]
    Yuzuru Sato
    Long-term workshop at Isaac Newton Institute, Cambridge, England, UK  2005
  • Spatiotemporal Intermittency and its Application to Problems of Memory and Learning  [Invited]
    Yuzuru Sato
    Seminar at Santa Fe Institute, Santa Fe, New Mexico, USA  2005
  • Stability and Diversity in Collective Adaptation  [Invited]
    Yuzuru Sato
    Seminar at Santa Fe Institute, Santa Fe, New Mexico, USA  2004
  • Dynamics of Learning and Flows of Information in Collectives  [Invited]
    Yuzuru Sato
    Dynamics Days Europe XXIII, Palma de Mallorca, Spain  2003/09
  • Dynamics of Analog Computation  [Invited]
    Yuzuru Sato
    Philosophy of Computation  2003
  • Dynamics of coupled replicator equations  [Not invited]
    Yuzuru Sato
    "Dynamics Days Europe XXII", Heiderberg, Germany  2002/07
  • Dynamics of learning and coupled replicator  [Invited]
    Yuzuru Sato
    Workshop on Dynamical Systems in Mathematical Biology, Tokyo, Japan  2002/05
  • Coupled replicator equations for the dynamics of learning in multiagent systems  [Invited]
    Yuzuru Sato
    Seminar at Research Unit in Language Evolution and Computation, University of Edinburgh  2002
  • Computation with switching map systems: Nonlinearity and computational complexity  [Invited]
    Yuzuru Sato
    Seminar at Department of Applied Mathematics, Princeton University Princeton, NJ, USA  2001
  • NP-completeness of kSAT and multifractals  [Not invited]
    Yuzuru Sato
    Conference on Computational Physics, Granada, Spain  1998/09

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology:Grants-in-Aid for Scientific Research(基盤研究(C))
    Date (from‐to) : 2009 -2011 
    Author : Yuzuru SATO
     
    北海道大学We extend the standard game dynamics to N-person game dynamics, Markov game dynamics, and continuous game dynamics and study them in terms of dynamical systems theory. (1) N-person game dynamics : The model is described as coupled map lattice and globally coupled maps, and shows complex nonlinear behavior such as traveling waves, spatiotemporal chaos, spatiotemporal intermittency. (2) Markov game dynamics : Players are modeled not by probability distributions, but by simple Markov systems. We analyze them dynamical systems theoretically and information theoretically. (3) Continuous game dynamics : Mixed strategies for continuous actions are modeled as probability density functions and a PDE model is constructed.

Educational Activities

Teaching Experience

  • Analytic Studies
    開講年度 : 2017
    課程区分 : 修士課程
    開講学部 : 理学院
    キーワード : カオス、複雑性、ランダムネス
  • Advanced Mathematical Analysis
    開講年度 : 2017
    課程区分 : 学士課程
    開講学部 : 理学部
    キーワード : カオス、複雑性、ランダムネス


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