1. School of Computer Science and Engineering, Nanyang Technological University, Singapore
2. Department of Information Systems, Faculty of Industrial Engineering and Innovation Sciences, Eindhoven University of Technology, Eindhoven, Netherlands
3. School of Computing and Information Systems, Singapore Management University, Singapore
4. Institute of Marine Science and Technology, Shandong University, Jinan, China
5. Institute for Infocomm Research (I2R), Agency for Science Technology and Research (A*STAR), Singapore