1. College of Network Security, Chengdu University of Technology, Chengdu 610059, China
2. Key Laboratory of Pattern Recognition and Intelligent Information Processing, Institutions of Higher Education of Sichuan Province, Chengdu University, Chengdu 610106, China
3. Department of Mathematics, Iran University of Science and Technology (IUST), Narmak, Tehran 16844, Iran
4. University of Education, Lahore Vehari Campus, Vehari, Pakistan