Hiroki SayamaHiroki Sayama

Associate Professor, Department of Bioengineering

Research interests: complex dynamical networks, collective behaviors, social systems modeling, artificial life/chemistry, mathematical biology, computer and information sciences


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Research Interests

  • Complex systems: complex dynamical networks, collective behaviors, nonlinear dynamics, pattern formation, self-organization, multiscale phenomena, social systems, modeling, simulation and visualization of complex systems, complex systems education
  • Artificial life: self-replication, self-repair, cellular automata, artificial chemistry, swarm behaviors, artificial evolutionary systems, robustness and evolvability of artifacts, application of artificial life to media art
  • Mathematical biology: theoretical population/evolutionary biology, spatially distributed ecological or evolutionary models, multilevel selection, speciation
  • Computer and information sciences: automaton and formal languages, computation theory, information theory, parallel computation, nature-inspired computing

Current Projects

  • Pattern formation in self-propelled particle swarms and its application to engineering design
  • Generative network automata and their applications to the modeling and analysis of:
    • Morphogenetic processes of biological/biomimetic networks
    • Social networks
    • Epidemiological networks
    • Biochemical networks
  • Evolutionary perspective on human decision making, creativity, and innovation
  • Complex systems education with interactive teaching tools
  • Linking youth and community using Information Technology
  • Artificial evolutionary systems built on deterministic cellular automata


  • BSc - Information Science, University of Tokyo, Japan, 1994
  • MSc - Information Science, University of Tokyo, Japan, 1996
  • DSc - Information Science, University of Tokyo, Japan, 1999

Academic Appointments

  • 1999-2002: Postdoctoral Fellow, New England Complex Systems Institute, Cambridge, MA, USA
  • 2000-2001: Associate in Research, Edwin O. Reischauer Institute of Japanese Studies, Harvard University, Cambridge, MA, USA
  • 2002-2004: Assistant Professor, Department of Human Communication, University of Electro-Communications, Tokyo, Japan
  • 2003-2005: Adjunct Assistant Professor, Department of Complex Systems Science, Graduate School of Information Science, Nagoya University, Nagoya, Japan
  • 2004-2005: Associate Professor, Department of Human Communication, University of Electro-Communications, Tokyo, Japan
  • 2006-present: Assistant Professor, Department of Bioengineering, Binghamton University, State University of New York, USA
  • 2002-present: Affiliate, New England Complex Systems Institute, Cambridge, MA, USA

List of Publications and Presentations

Awards & Grants

  • 1996: Best Presentation Award, Fujitsu Fifth Parallel Computing Workshop (PCW'95 Japan)
  • 1997-1999: First-Class Scholarship, Japan Scholarship Foundation, Amount: JPY 2,688,000
  • 1999-2001: Overseas Scholarship, Murata Overseas Scholarship Foundation, Japan, Subject: Study on parallel computation models that utilize logical structures immanent in the complexity of cellular automata, Amount: JPY 3,350,000
  • 2002 Travel Award for Researchers Dispatched to International Conventions, Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, Subject: Von Neumann's machine in the shell: Enhancing the robustness of selfreplication processes (Presentation at the Eighth International Conference on Artificial Life, Sydney, Australia), Amount: JPY 184,280
  • 2002-2003 UEC Grant for the Promotion of Research and Education, University of Electro-Communications, Japan, Subject: Emergence and evolution of patterns in spatially distributed locally interacting populations, Amount: JPY 1,300,000
  • 2003 Visiting Researcher Support (as a host institution for short-term visit of Chris Salzberg), International Information Science Foundation, Japan, Subject: Visualization and analysis of graph-based evolutionary dynamics, Amount: JPY 300,000
  • 2003-2004 Grant for Research on Human and Entertainment, Hayao Nakayama Foundation for Science, Technology and Culture, Japan, Subject: Basic study on the possibility of physical implementation of self-replicating toys, Amount: JPY 1,000,000
  • 2003-2004 Grant for Environmental Research, Showa Shell Sekiyu Foundation for Promotion of Environmental Research, Japan, Subject: Theoretical models and simulations of the effects of artificial modification of habitat structure on biodiversity, Amount: JPY 500,000
  • 2005-2007 Grants-in-Aid for Scientific Research, Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, Subject: Developing a kinematic model of self-replicating universal constructors, Amount: JPY 1,200,000 (Project canceled due to moving of PI)
  • 2006-2007 Interdisciplinary Collaboration Grant, Division of Research, Binghamton University, Subject: Modeling judgment and decision making of collaborative teams working to satisfice variable requirements, Amount: $8,000 (Collaboration with Shelley D. Dionne)
  • 2007 Individual Development Award, Binghamton University / UUP, Amount: $1,000
  • 2008-2009 Course, Curriculum, and Laboratory Improvement Grant, National Science Foundation (Award #: NSF DUE-0737313), Subject: Teaching Social Complexity and Multidisciplinary Team Building: An Experimental Engineering Approach, Amount: $149,955 (co-PI; collaboration with Craig Laramee, Shelley Dionne and David Sloan Wilson)
  • 2008 Guest Scientist and Institute Colloquium Speaker, Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
  • 2008 Invited Speaker, The 2007/2008 Dean’s Distinguished Lecture Series, University of Vermont College of Engineering and Mathematical Sciences
  • 2008 Individual Development Award, Binghamton University / UUP, Amount: $1,000
  • 2008-2010 Conrad and Virginia Klee Foundation, Subject: Linking Youth and Community through Technology, Amount: $71,500 (co-PI; collaboration with Pamela Mischen, Madhu Govindaraju and Kevin Heard)
  • 2008-2011 Human and Social Dynamics Grant, National Science Foundation (Award #: NSF SES-0826711), Subject: Evolutionary Perspective of Collective Decision Making, Amount: $552,074 (Main PI; collaboration with Shelley Dionne, Craig Laramee, J. David Schaffer and Francis Yammarino)

Last Updated: 1/15/14