1. School of Information and Electronics, Beijing Institute of Technology, Beijing, China
2. State Key Laboratory of Multimodal Artificial Intelligence Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, China
3. School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
4. School of Creative Technologies, University of Portsmouth, Portsmouth, U.K.
5. Department of Civil and Environmental Engineering, University of California, Los Angeles, CA, USA
6. State Key Laboratory for Management and Control of Complex Systems, Chinese Academy of Sciences, Beijing, China