1. School of Transportation and Logistics, Southwest Jiaotong University, Chengdu 610031, China
2. National and Local Joint Engineering Laboratory of Comprehensive Intelligent Transportation, Southwest Jiaotong University, Chengdu 610031, China
3. National Engineering Laboratory of Integrated Transportation Big Data Application Technology, Chengdu 610031, China
4. State Laboratory of Rail Transit (Under Preparation), Beijing, China
5. School of Data Science, City University of Hong Kong, Kowloon Tong, Hong Kong