| 1998 -- (現在) | the IEEE International Conference on Systems, Man and Cybernetics | Vice Program Chair in the IEEE International Conference on Systems, Man and Cybernetics, San Diego |
| 1997-01 -- 1999-12 | the International Journal of Knowledge-based Intelligent Engineering Systems | Member of Editorial Board for the International Journal of Knowledge-based Intelligent Engineering Systems, IOS press, Netherlan |
| 1999 -- (現在) | 6th International Conference on Neural Information Processing | Member of Program Committee for the 6th International Conference on Neural Information Processing, Perth |
| 1999 -- (現在) | the IEEE International Conference on Systems, Man and Cybernetics | Member of the Panel of Judges for the Best Student Paper Competition in the IEEE International Conference on Systems, Man and Cy |
| 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 |
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