Hidehiko Masuhara is a Professor of Mathematical and Computing Science, Tokyo Institute of Technology since April 2013. He received his B.S., M.S., and Ph.D. in Computer Science from Department of Information Science, University of Tokyo in 1992, 1994, and 1999, respectively, and served as an assistant professor, lecturer, and associate professor at Graphics and Computer Science, Graduate School of Arts and Sciences, University of Tokyo from 1995 until 2013.