1. School of Computer Science, Northwestern Polytechnical University, Xi'an, China
2. State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, China
3. State Key Laboratory of Multimodal Artificial Intelligence Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, China
4. Fowler College of Business (FCB)
5. College of Arts and Letters, San Diego State University (SDSU), USA