1. School of Computer Science & Technology, Beijing Institute of Technology, Beijing, China
2. School of Computer Science, University of Auckland, Auckland, New Zealand
3. School of Computer Science & Technology, Xi’an Jiaotong University, Xi’an, China
4. The State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Science, Beijing, China
5. Fujian Provincial Key Laboratory of Information Processing and Intelligent Control, Minjiang University, Fuzhou, China