1. School of Information Engineering, China University of Geosciences (Beijing), Beijing, China
2. Faculty of Business and Information Technology, Ontario Tech University, Oshawa, ON, Canada
3. College of Computer Science and Technology, Zhejiang University, Hangzhou, China
4. College of Intelligence and Computing, Tianjin University, Tianjin, China
5. Computer Science Department, TELECOM SudParis, Evry, France