1. School of Transportation and Logistics, Southwest Jiaotong University, National United Engineering Laboratory of Integrated and Intelligent Transportation, Chengdu, China
2. College of Mathematics, Southwest Jiaotong University, Chengdu, China
3. MOE Key Laboratory of High-speed Railway Engineering, College of Civil Engineering, Southwest Jiaotong University, Chengdu, China
4. College of Transportation and Logistics, Southwest Jiaotong University, Chengdu, China