1. Big Data Development and Research Center, Guangzhou College of Technology and Business, Guangzhou, People's Republic of China
2. College of Computer Science and Electronic Engineering, Hunan University, Changsha, People's Republic of China
3. College of Information Engineering, Shanghai Maritime University, Shanghai, People's Republic of China
4. QuanZhou University of Information Engineering Software College, QuanZhou, People's Republic of China
5. Department of Computer Science and Information Engineering, Providence University, Taichung, Taiwan