1. School of Statistics and Mathematics, Zhejiang Gongshang University, Hangzhou, China
2. Academy of Zhejiang Culture Industry Innovation & Development, Zhejiang Gongshang University, Hangzhou, China
3. Department of Computer Science and Information Systems, University of North Georgia, Oakwood, Georgia
4. School of Business Administration, Zhejiang Gongshang University, Hangzhou, China