Kazutoshi Sumiya received his BE and ME degrees in instrumentation engineering from Kobe University in 1986 and 1988, respectively. Then he joined Panasonic (Matsushita Electric Industrial Co). He received his Ph.D in Information media from Kobe University in 1998. He left the company and became a lecturer at Kobe University in 1999, and then was promoted to an associate professor in 2000. He became an associate professor in 2001 at Kyoto University and a professor at the University of Hyogo in 2004. At Kobe University and Kyoto University, he developed information dissemination systems and fusion technique for broadcast media and network media. At the University of Hyogo, he is developing next-generation information techniques. He is a chair of Database System special interest group (DBS) in the Information Processing Society of Japan (IPSJ) and a co-editor of IPSJ Transaction on Database.