1. Optimisation Research Group, Faculty of Computing and Informatics, Universiti Malaysia Sabah Labuan International Campus, Labuan, Malaysia
2. Faculty of Computer Science and Information Technology, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia
3. Department of Computer Science and Information Technology, La Trobe University, Melbourne, VIC, Australia
4. Faculty of Information Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
5. School of Computer Science, University of Nottingham, Semenyih, Selangor, Malaysia