1. Sungkyunkwan University,Dept. of Artificial Intelligence,Suwon,Korea
2. Sungkyunkwan University,Dept. of Electrical and Computer Engineering,Suwon,Korea
3. Sungkyunkwan University,Dept. of Computer Science and Engineering,Suwon,Korea
4. Seoul Theological University,Dept. of IT Convergence Software,Bucheon,Korea