1. College of Computer Science, Sichuan Normal University, Chengdu, China
2. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, China
3. Department of Electrical and Computer Engineering, University of Windsor, ON, Canada
4. Department of Sciences and Informatics, Muroran Institute of Technology, Muroran, Japan
5. School of Computer Science and Engineering, Nanyang Technological University, Singapore
6. School of Artificial Intelligence, Guilin University of Electronic Technology, Guilin, China
7. College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China