Large Neighborhood Search Using Constraint Satisfaction Techniques in Vehicle Routing Problem. - Hyun-Jin Lee; Sang-Jin Cha; Young-Hoon Yu; GeunSik Jo (Canadian AI, 2009)

An Effective Learning Method in Art Using Virtual Reality and Ontology. - Sang-Jin Cha; Gahee Kim; Chol-Hee Jang; GeunSik Jo (ICITCS, 2011)