1. Department of E-Commerce, Nanjing Audit University, Nanjing 211815, China
2. Collaborative Systems Laboratory, Nipissing University, North Bay, ON P1B 8L7, Canada
3. School of Business, Nanjing Audit University, Nanjing 211815, China
4. School of Computer Science, Nanjing Audit University, Nanjing 211815, China