1. Department of Computer Science, Zhongyuan University of Technology, No.41, Zhongyuan Road, Zhongyuan District,
Henan, P.R. China
2. Propaganda Department, Zhengzhou University of Technology, No.108, Yingcai Road, Huiji
District, Henan, P.R. China
3. Department of Computer Science, Henan University of Engineering, No.1, Xianghe Road,
Longhu, Zhengzhou, Henan, P.R. China