Kazuya Kusumoto is a research director in the Media Lab Division at DENTSU INC. He is responsible for media research and the development of media planning tools. He developed the DENTSU proprietary multimedia optimizer 'DiaLog' in 1998 and value–based strategic supporter 'DVAST' in 2000. Prior to joining the Media Lab Division, he was attached to the marketing division where he mastered survey techniques. He received his B.E. and M.S. from Waseda University in Tokyo.