Seminar & conference presentations ¼Ò°³    
2006.9. "What is a Recommender System?", The Present and Future of Recommend Systems, SPRI, Bilbao, Spain.
2002.9. "WordNet-based Collaborative Weighting for Ranking Web Pages", ACI 2002, Tokyo Institute of Technology, Tokyo.
2002.2. "The Effect of Dimensionality Reduction in Recommendation Systems", AI Workshop, Soongsil University, Seoul.
2001.10. "An Adaptive Recommendation System with a Coordinate Agent", WI 2001, Maebashi Convention Center, Maebashi.
2000.7. "e-CRMÀ» À§ÇÑ Next Generation Techniques, one to one Web Marketing Àü·«¼¼¹Ì³ª", Àü°æ·Ã ȸ°ü