1. Hiroshima University,Graduate School of Advanced Science and Engineering,Kagamiyama 1-4-1,Higashihiroshima,Japan,739-8527
2. NTT DATA Group Corporation Toyosu Center Bldg, Annex, 3-9, Toyosu 3-chome,Research and Development Headquarters,Koto-ku,Tokyo,Japan,135-8671