1. Department of Artificial Intelligence Convergence, Kwangwoon University, Seoul, South Korea
2. Department of Artificial Intelligence Applications, Kwangwoon University, Seoul, South Korea
3. Department of Management Information Systems, Jeju National University, Jeju, South Korea
4. Smart Data Research Section, Electronics and Telecommunications Research Institute, Daejeon, South Korea
5. School of Information Convergence, Kwangwoon University, Seoul, South Korea