1. Tokushima University,Graduate School of Advanced Technology and Science,Tokushima,Japan
2. University of Tsukuba,Faculty of Library Information and Media Science,Tsukuba,Japan
3. Dataa Robotics,Chengdu,China
4. The University of Tokyo,Graduate School of Information Science & Technology,Tokyo,Japan
5. University of Electronic Science and Technology of China,School of Computer Science and Engineering,Chengdu,China