1. School of Traffic and Transportation Engineering, Central South University, Changsha, China
2. Department of Industrial Engineering and Innovation Sciences, Eindhoven University of Technology, Eindhoven, The Netherlands
3. School of Computing and Information Systems, Singapore Management University, Singapore, Singapore
4. Institute of Marine Science and Technology, Shandong University, Jinan, China
5. Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore