1. College of Mathematics and Computer Science, Zhejiang Normal University, Jinhua, Chinay
2. Key Laboratory of Intelligent Education Technology and Application of Zhejiang Province, College of Mathematics and Computer Science, Zhejiang Normal University, Jinhua, China
3. School of Automation and Electrical Engineering, Key Laboratory of Complex Systems and Intelligent Computing in Universities of Shandong, Linyi University, Linyi, Shandong, China
4. School of Mathematics and the Jiangsu Provincial Key Laboratory of Networked Collective Intelligence, Southeast University, Nanjing, China