| 1998 -- 1998 | Institute of Electrical and Electronics Engineers (IEEE) | Vice Program Chair in the IEEE International Conference on Systems, Man and Cybernetics |
| 1998 -- 1998 | | Publicity Chair in the Second International Conference on Knowledge-based Intelligent Electronic Systems |
| 1997 -- 1999 | | Member of Editorial Board for the International Journal of Knowledge-based Intelligent Engineering Systems |
| 2011 -- (現在) | | Vice Chair of the Fuzzy Systems Technical Committee (FSTC) of the IEEE Computational Intelligence Society |
| 2011 -- (現在) | | Member of Program Committee for 6th International Symposium Advances in Artificial Intelligence and Applications |
| 2010 -- (現在) | 日本統計学会 | 理事 |
| 2009 -- (現在) | | Member of Program Committee for FUZZ-IEEE |
| 2009 -- (現在) | | Member of Local Organizing Committee, The 2nd Institute of Mathematical Statistics Asia Pacific Rim Meeting |
| 2007 -- (現在) | | Member of International Program Committee at International Society of Management Engineers |
| 2006 -- (現在) | | Member of International Program Committee at KES |
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