Hiroyuki Kitagawa received the B.Sc. degree in physics and the M.Sc. and Dr.Sc. degrees in computer science, all from the University of Tokyo, in 1978, 1980, and 1987, respectively. He is currently a professor in Institute of Information Sciences and Electronics, the University of Tsukuba, Japan. From 1981-1988, he was with NEC research laboratory. He served as Chairperson of IEICE Special Interest Group on Data Engineering, Japan, from 1999-2001. His research interests include integration of heterogeneous information sources, WWW and databases, semi-structured data, multimedia databases, and human interface. He is a member of ACM, IEEE Computer Society, IEICE, IPSJ, and JSSST.