1. School of Computer Science and Technology, Shandong Technology and Business University, Shandong, People’s Republic of China
2. Shandong Intelligent Financial Engineering Laboratory, Shandong Technology and Business University, Shandong, People’s Republic of China
3. School of Economics, Nankai Univeristy, Tianjin, People’s Republic of China
4. National Academy of Innovation Strategy, Beijing, People’s Republic of China