1. School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu, China
2. Department of Computer Science, Government College University, Faisalabad, Pakistan
3. Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland 1010, New Zealand
4. Department of Computer Science, Government College Women University, Faisalabad, Pakistan
5. South Eastern Kenya University, Kitui, Kenya