1. School of Information and Control Engineering, China
2. School of Information Science and Technology, Qingdao University of Science and Technology, Qingdao, Shandong, China
3. School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China
4. School of Mathematics, China University of Mining and Technology, Xuzhou, Jiangsu, China
5. School of Computer Science and Technology, Shandong Jianzhu University, Jinan, Shandong, China