1. Hubei Key Lab of Transportation Internet of Things, School of Computer Science and Artificial Intelligence, Wuhan University of Technology, Wuhan, China
2. School of Computer Science and Engineering, Nanyang Technological University, Singapore
3. School of Computer Science and Information Engineering, Hubei University, Wuhan, China
4. Institute for Artificial Intelligence, Peking University, Beijing, China
5. School of Computer Science and the Institute for Artifical Intelligence, Peking University, Beijing, China