1. Intelligent Game and Decision Lab (IGDL), Beijing, China
2. National Key Laboratory of Parallel and Distributed Computing, College of Computer, National University of Defense Technology, Hunan, China
3. College of Computer, National University of Defense Technology, Hunan, China
4. School of Computer Science and Technology, Harbin Institute of Technology (Shenzhen), Guangdong, China
5. School of Computing and Information Systems, Singapore Management University Singapore, Singapore