1. School of Economics and Management, University of Chinese Academy of Sciences, Beijing, China
2. Research Center on Fictitious Economy and Data Science, Chinese Academy of Sciences, Beijing, China
3. Key Laboratory of Big Data Mining and Knowledge Management, Chinese Academy of Sciences, Beijing, China
4. Lazaridis School of Business and Economics, Wilfrid Laurier University, Waterloo, Ontario, Canada
5. Shanghai WinJoin Information Technology Co., Ltd., Shanghai, China