1. Faculty of Computer Sciences and Information Technology, Universiti Tun Hussein Onn Malaysia, Batu Pahat 83000, Malaysia
2. Department of Electrical Engineering, Universitas Ahmad Dahlan, Yogyakarta 55166, Indonesia
3. School of Computing, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
4. Department of Computer and Information Sciences, Universiti Teknologi Petronas, Seri Iskandar 32610, Malaysia
5. Faculty of Accounting & Management, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia