1. School of Computer Science and Technology, Guangdong University of Technology, Guangzhou, China
2. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
3. School of Computer Science and Technology, Harbin Institute of Technology (Shenzhen), Shenzhen, China
4. School of Computer and Information, Hefei University of Technology, Hefei, China
5. Centre de Recherches de Royallieu, Université de Technologie de Compiègne, Compiègne, France