He received his B.Sc. and M.Sc. from the University of Tokyo in 2000 and in 2002, respectively. He received his Ph.D. in Computer Science and Technology from the University of Tokyo in 2005. After working at the Institute of Industrial Science at the University of Tokyo as an research associate, he joined the Graduate School of Informatics and Engineering at the University of Electro-Communications in 2010. His research interests span both intelligent robotics and analysis of human motion. In intelligent robotics area, he worked on learning from observation, skill full manipulation and entertainment robots. In human motion analysis area, he worked on recognition of human motion and understanding of human intention.