1. College of Mathematics and Information Technology, XingTai University , XingTai , 054001 , China
2. Department of Computer Science, Karpagam Academy of Higher Education , Coimbatore , Tamilnadu , India
3. Electronics & Communication Engineering Department, National Institute of Technology , Hamirpur , India
4. Department of Computing, Mathematics and Physics, Høgskulen på Vestlandet , Bergen , Norway