1. School of Computer Science and Technology and the Collaborative Innovation Center of Railway Traffic Safety, Beijing Jiaotong University, Beijing, China
2. State Key Laboratory of Rail Traffic Control and Safety and the School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing, China
3. Faculty of Engineering and Applied Science, Memorial University, St. John’s, NL, Canada
4. Department of Electrical Engineering and Computer Science, Khalifa University, Abu Dhabi, United Arab Emirates
5. School of Computer Science and Engineering, Nanyang Technological University, Jurong West, Singapore