Affiliation: | 1. College of Computer and Information, Hohai University, Nanjing 210098, China;Department of Computer Science and Engineering, Huaian College of Information Technology, Huaian 223003, China;2. College of Computer and Information, Hohai University, Nanjing 210098, China;3. School of Business, Nanjing Normal University, Nanjing 210046, China |