1. Department of Computer Science and Engineering, Korea University, Seoul, South Korea
2. Faculty of Computer Science and Information Technology, Department of Software Engineering, University of Malaya, Kuala Lumpur, Malaysia
3. Center of Systems and Machines Intelligence, College of Engineering, Universiti Tenaga Nasional, Kajang, Malaysia
4. Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan