1. Ministry of Education Key Lab of Transportation Big Data and Artificial Intelligence, School of Computer and Information Technology, Beijing Jiaotong University, Beijing, China
2. research scientist at Institute for Infocomm Research, A*STAR, Singapore
3. School of Computer Science and Information Technology, Beijing Jiaotong University, Beijing, China
4. School of Economics and Management, Key Laboratory of Trustworthy Distributed Computing and Service, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing, China
5. Institute of Information Science, Beijing Jiaotong University, Beijing, China