Masami HagiyaMasami Hagiya is a professor at Department of Computer Science, Graduate School of Information Science and Technology, University of Tokyo. He is in Room 411, Science Building No.7, Department of Computer Science, Graduate School of Information Science and Technology, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, JAPAN. TEL: +81-3-5841-4113 (PHS) TEL: +81-3-5841-4115 (laboratory) E-
