1. Henan Normal University,College of Computer and Information,Henan,China
2. Henan Normal University, Henan Normal University,College of Software,Henan,China
3. Nanjing University of Information Science and Technology,School of Artificial Intelligence,Nanjing,China
4. Guangdong Polytechnic Normal University,School of Computer Science,Guangdong,China
5. Sun Yat-sen University,School of Information Management,Guangdong,China