| 1997 -- 2000 | the Japanese Society of Computational Statistics | Member of the News Letter Committee for the Japanese Society of Computational Statistics |
| 1998-01 -- 2000-12 | IEEE Systems, Man & Cybernetics Society | Member of the Administration Committee for IEEE Systems, Man & Cybernetics Society |
| 2000 -- (現在) | the Fourth Asian Fuzzy Systems Symposium | Member of the Local Arrangement in the Fourth Asian Fuzzy Systems Symposium 2000 - International Symposium on Theory and Applica |
| 2000 -- (現在) | the IEEE International Conference on Systems, Man and Cybernetics | Member of Technical Program Committee for the IEEE International Conference on Systems, Man and Cybernetics |
| 2000 -- 2001 | Japan Society for Fuzzy Theory and Intelligent Informatics | Member of Japan Society for Fuzzy Theory and Intelligent Informatics, Kanto Chapter |
| 2000 -- 2002 | the 17th Fuzzy System Symposium | Member of Finance Committee in the 17th Fuzzy System Symposium |
| 2001 -- 2003 | the Japan Society for Fuzzy Theory and Intelligent Informatics | Manager of the Japan Society for Fuzzy Theory and Intelligent Informatics, Kanto Chapter |
| 2001-01 -- 2003-12 | Japanese Society of Computational Statistics | Director of Public Information Committee for the Japanese Society of Computational Statistics |
| 2003-01 -- 2004-01 | International Journal of Hybrid Intelligent Systems | Member of Editorial Board for the International Journal of Hybrid Intelligent Systems |
| 2003 -- 2005 | Japanese Society of Computational Statistics | Member of the Public Information Committee |
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