1. Department of Systems Engineering and Engineering Management, City University of Hong Kong, Hong Kong, P.R. China.
2. City University of Hong Kong Shenzhen Research Institute, Shenzhen, P.R. China.
3. College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China.
4. School of Statistics, Zhejiang Gongshang University, Hangzhou, P.R. China.