Department of Computer Science and Engineering, Chinese University of Hong Kong, Hong Kong, China. jackyleehongjian@gmail.com.|Department of Computer Science and Engineering, Chinese University of Hong Kong, Hong Kong, China. jackyleehongjian@gmail.com.|Department of Computer Science and Engineering, Chinese University of Hong Kong, Hong Kong, China. jackyleehongjian@gmail.com.|Department of Computer Science and Engineering, Chinese University of Hong Kong, Hong Kong, China. jackyleehongjian@gmail.com.|Advanced Analytics Institute and Center for Health Technologies, Faculty of Engineering and IT, University of Technology, Sydney, Australia. jinyan.li@uts.edu.au.