1. School of Information and Software Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
2. Raptor Interactive (Pty) Ltd., Eco Boulevard, Witch Hazel Ave, Centurion 0157, South Africa
3. Department of CS&IT, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan
4. Department of Electronics, University of Buner, Buner, Pakistan
5. Department of Computer Engineering, Kangwon National University, Samcheok 25806, Republic of Korea