1. Guangzhou Institute of Technology, Xidian University, Guangzhou, China
2. College of Computer and Data Science, Fuzhou University, Fuzhou, China
3. Department of Information Technology, GF Securities Company Ltd, Guangzhou, China
4. School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
5. Department of Business Administration, Chaoyang University of Technology, Taichung, Taiwan
6. Department of Electrical and Electronic Engineering, Hanyang University, Ansan, South Korea
7. School of Computing and Information Systems, Singapore Management University, Singapore, Singapore