Mobile SeoulSearch: Automatic Mobile Regional Information Retrieval System Based on Web. - Yongjin Kang; Yong Jin Kwon (ICDE Workshops, 2005)

Method of Collaborative Filtering Based on Uncertain User Interests Cluster. - Xiang Cui; Guisheng Yin; Long Zhang; Yongjin Kang (J. Comput., 2013)