1. Department of Information Technology, School of Informatics, Walailak University, Thasala, Nakhon Si Thammarat 80160, Thailand
2. Faculty of Engineering, Cambodia University of Technology and Science, CamTech Street, Sangkat Prek Tasek, Khan Chroy Chongvar Phnom Penh, Phnom Penh 121003, Cambodia
3. Informatics Innovative Center of Excellence (IICE), School of Informatics, Walailak University, Thasala, Nakhon Si Thammarat 80160, Thailand