Co-editor Special Issue on Wavelets, IEICE Transactions A, Japanese (Dec. 1996).
Editor, 1997 IBM Tokyo Research Laboratory Seminar Series abstract book (Jan. 1998).
Editor, Wavelets and their Applications: Case Studies, SIAM books, Philadelphia, PA, 1998.
Editorial Board Member, Transactions on Mathematical Modeling and its Applications, Journal of the Information Processing Society of Japan (IPSJ) (Apr. 1999 - Mar. 2003).
Editorial Board Member, Bulletin of Japan SIAM (Apr. 2002 - Mar. 2005).
Editorial Board Member, Communications of the ACM (Jan. 2008 - ).