1. School of Management and Engineering, Nanjing University, Nanjing 210093, China
2. School of Economics and Management, University of Chinese Academy of Sciences, Beijing 100190, China
3. Key Laboratory of Big Data Mining and Knowledge Management, Chinese Academy of Sciences, Beijing 100190, China
4. MOE Social Science Laboratory of Digital Economic Forecasts and Policy Simulation, University of Chinese Academy of Sciences, Beijing 100190, China