| Jan1952 | Born |
| Mar1970 | Graduated from private Hiroshima Gakuin High School |
| Mar1974 | Graduated from Department of Control Engineering,Faculty of Engineering,Tokyo Institute of Technology |
| Mar1976 | Graduated from Master Course of Graduate School of Science and Engineering,Tokyo Institute of Technology |
| Apr1976 | joined Nippon Telegraph and Telephone Public Corporation (Currently, NTT)(Electric Communications Laboratories) |
| Apr1980 | Research Associate of Department of Mechanical Engineering, Nagaoka University of Technology |
| Sep1981 | Doctor of Engineering, Tokyo Institute of Technology |
| Apr1984 | Associate Professor of Department of Control Engineering, Graduate School of Engineering, Tokyo Institute of Technology |
| Sep1992 | Professor of Department of Systems Science, Tokyo Institute of Technology |
| May1996 | Professor of Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology |
| Apr2000 | Professor of Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology |
| Apr2002 | Professor of Department of Information Physics, Graduate School of Information Science and Technology / Department of Mathematical Engineering and Information Physics, School of Engineering, The University of Tokyo |