1. Faculty of Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8512
2. System Engineering Research Laboratory, Central Research Institute of Electric Power Industry, 2-11-1 Iwadokita, Komae, Tokyo 201-8511
3. Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562
4. Laboratory for Mathematical Neuroscience, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198
5. “Intelligent Cooperation and Control,” PRESTO, JST