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Senior Research Fellow Hiroshi IYETOMI

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Hiroshi IYETOMI

Professor of Mathematics at Niigata University

[Research Themes]

Expertise

  • Collective motion in economic systems
    Hierarchy and circularity of economic networks
    Econophysics, Mutlivariate Analysis, Network Science

Profile

Education

  • 1984 DSc (The University of Tokyo)
  • 1981 MSc (The University of Tokyo)
  • 1979 BSc (The University of Tokyo)

Career

  • 2013.05 - present Professor, Niigata University
  • 2012.04 - 2013.04 Project Professor, The University of Tokyo
  • 2002.02 - 2012.03 Professor, Niigata University
  • 2010.11 - 2012.03 Director, Niigata University Library
  • 1995.01 - 2002.01 Associate Professor, Niigata University
  • 1994.09 - 1994.12 Senior Researcher, Energy Research Laboratory, Hitachi Ltd.
  • 1993.04 - 1994.08 Researcher, Energy Research Laboratory, Hitachi Ltd.
  • 1987.09 - 1989.08 Research Associate, Argonne National Laboratory
  • 1984.04 - 1993.03 Assistant Professor, The University of Tokyo

Publications

  • H. Aoyama, Y. Fujiwara, Y. Ikeda, H. Iyetomi, W. Souma, and H. Yoshikawa, “Macro-Econophysics: New Studies on Economic Networks and Synchronization” (Cambridge University Press, 2017), pp. 435.
  • T. Iino and H. Iyetomi, “Community Structure of a Large-scale Production Network in Japan”, in The Economics of Interfirm Networks, eds. T. Watanabe, A. Ono and I. Uesugi (Springer, Tokyo, 2015), pp. 39-65.
  • H. Aoyama, Y. Fujiwara, Y. Ikeda, H. Iyetomi, and W. Souma, “Econophysics and Companies ? Statistical Life and Death in Complex Business Networks” (Cambridge University Press, 2010), pp. 262.
  • H. Aoyama, Y. Fujiwara, Y. Ikeda, H. Iyetomi, and W. Souma, “Econophysics” (Kyoritsu Shuppan, 2008), pp. 450, in Japanese.
  • H. Aoyama, Y. Fujiwara, Y. Ikeda, H. Iyetomi, and W. Souma, “Pareto Firms” (Nihonkeizaihyoron-sha, 2007), pp. 385, in Japanese.
  • L. Marotta, S. Micciche, Y. Fujiwara, H. Iyetomi, H. Aoyama, M. Gallegati, and R. N. Mantegna, "Backbone of Credit Relationships in the Japanese Credit Market", EPJ Data Science, 5(1), 1-14, 2016.
  • I. Vodenska, H. Aoyama, Y. Fujiwara, H. Iyetomi, and Y. Arai, “Interdependencies and Causalities in Coupled Financial Networks”, PLoS ONE, 11(3), e0150994, 2016.
  • L. Marotta, S. Micciche, Y. Fujiwara, H. Iyetomi, H. Aoyama, M. Gallegati, and R. N. Mantegna, "Bank-firm Credit Network in Japan. An Analysis of a Bipartite Network", PLoS ONE, 10(5), e0123079, 2015.
  • H. Aoyama, H. Iyetomi, and H. Yoshikawa, “Equilibrium Distribution of Labor Productivity: A Theoretical Model”, J. Econ. Interact. Coord., 10, pp. 57-66, 2015.
  • Y. Matsuura, T. Iino, and H. Iyetomi, “Temporal Change of Community Structure in the Japanese Credit Network”, Frontiers in Artificial Intelligence and Applications, 255, 399 - 408, 2013.
  • Y. Arai and H. Iyetomi, “Complex Principal Component Analysis of Dynamic Correlations in Financial Markets”, Frontiers in Artificial Intelligence and Applications, 255, 111 - 119, 2013.
  • T. Yoshikawa, Y. Arai, and H. Iyetomi, “Comparative Study of Correlations in Financial Markets”, Frontiers in Artificial Intelligence and Applications, 255, 104 - 110, 2013.
  • H. Iyetomi, H. Aoyama, Y. Fujiwara, Y. Ikeda, and W. Souma, "A Paradigm Shift from Production Function to Production Copula: Statistical Description of Production Activity of Firms", Quantitative Finance, 12(9), 1453-1466, 2012.
  • T. Iino and H. Iyetomi, “Subcommunities and Their Mutual Relationships in a Transaction Network”, Prog. Theor. Phys. Suppl., 194, 144-157, 2012.
  • H. Iyetomi, “Labor Productivity Distribution with Negative Temperature”, Prog. Theor. Phys. Suppl., 194, 135-143, 2012.
  • Y. Arai and H. Iyetomi, “Numerical Study of Generalized Random Correlation Matrices: Autocorrelation Effects”, Prog. Theor. Phys. Suppl., 194, 84-93, 2012.
  • T. Yoshikawa, T. Iino, and H. Iyetomi, “Observation of Frustrated Correlation Structure in a Well-Developed Financial Market”, Prog. Theor. Phys. Suppl., 194, 55-63, 2012.
  • H. Iyetomi, Y. Nakayama, H. Yoshikawa, H. Aoyama, Y. Fujiwara, Y. Ikeda, and W. Souma, “What Causes Business Cycles? Analysis of the Japanese Industrial Production Data”, Journal of The Japanese and International Economies, 25, 246?272, 2011.
  • H. Iyetomi, Y. Nakayama, H. Aoyama, Y. Fujiwara, Y. Ikeda, and W. Souma, “Fluctuation-Dissipation Theory of Input-Output Interindustrial relations”, Phys. Rev. E, 83, 016103 (2011).
  • T. Iino and H. Iyetomi, "Modeling of Relation Between Transaction Network and Production Activity for Firms", Prog. Theor. Phys. Suppl., 179, 134-144 (2009).
  • H. Iyetomi, H. Aoyama, Y. Fujiwara, Y. Ikeda, and W. Souma, "Agent-Based Model Approach to Complex Phenomena in Real Economy", Prog. Theor. Phys. Suppl., 179, 123-133 (2009).
  • H. Aoyama, H. Yoshikawa, H. Iyetomi, and Y. Fujiwara, "Labour Productivity Superstatistics", Prog. Theor. Phys. Suppl., 179, 80-92 (2009).
  • Y. Nakayama and H. Iyetomi, "Random Matrix Theory of Dynamical Cross Correlations in Financial Data", Prog. Theor. Phys. Suppl., 179, 60-70 (2009).

Others

  • 2012.08 - present Associate Editor, Journal of Economic Interaction and Coordination (Springer)