1. Department of Computer Science, Faculty of Applied Sciences, Taiz University, Taiz, Yemen
2. Center for Artificial Intelligent Technology, Faculty of Information Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
3. Software Engineering Department, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
4. Department of Computer Science, College of Engineering and IT, Amran University, Amran, Yemen