1. School of Information and Electronics, Beijing Institute of Technology, Beijing, China
2. School of Science, Dalian Minzu University, Dalian, China
3. Department of Civil and Environmental Engineering, University of California, Los Angeles, CA, USA
4. Institute of Automation, Chinese Academy of Sciences, Beijing, China
5. State Key Laboratory for Management and Control of Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, China