1. Institute of Software, Chinese Academy of Sciences, China and College of Computer Science and Technology, University of Chinese Academy of Sciences, China
2. Capital Normal University, College of Information Engineering, China
3. State Key Laboratory of Media Convergence and Communication, Communication University of China, China
4. Capital Normal University, China
5. School of Artificial Intelligence, Beijing Normal University, China
6. Institute of Software, Chinese Academy of Sciences, China
7. Department of Computer Science and Technology, Tsinghua University, China