1. Department of Computer Science, Tokyo Institute of Technology, 4259-J3-23, Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
2. Academy for Convergence of Materials and Informatics (TAC-MI), Tokyo Institute of Technology, S6-23, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
3. Department of Life Science and Technology, Tokyo Institute of Technology, 4259-J3-23, Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan