1. School of Computer Science and Engineering, Nanyang Technological University, Jurong West, Singapore
2. Alibaba Group and Alibaba-NTU Joint Research Institute, Nanyang Technological University, Jurong West, Singapore
3. School of Automation, Guangdong University of Technology, Guangzhou, China
4. Pillar of Information Systems Technology and Design, Singapore University of Technology and Design, Tampines, Singapore
5. Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong, China
6. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Canada