1. Faculty of Engineering and Information Technology, Quang Binh University, Dong Hoi, Vietnam
2. Department of Computer Engineering, Yeungnam University, Gyeongsan, South Korea
3. Division of Knowledge and System Engineering for ICT, Faculty of Information Technology, Ton Duc Thang University, Ho Chi Minh, Vietnam
4. Faculty of Computer Science and Management, Wroclaw University of Science and Technology, Wroclaw, Poland