1. Data Science Laboratory, Hanyang University, Korea;
2. Department of Interaction Science, Sungkyunkwan University, Korea;
3. Graduate School of Innovation and Technology Management, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea;
4. College of Computing, Hanyang University, Ansan, Korea;
5. Department of Business Administration, Dongguk University, Gyeongju Campus, Gyeongju, Korea