Adaptive Documents Classification System Based on Ontology Constructed by Fuzzy Function and Fuzzy Relations. - Ju-In Youn; He-Jue Eun; Cheol-Jung Yoo; Yong-Sung Kim (CW, 2004)

Fuzzy Clustering for Documents Based on Optimization of Classifier Using the Genetic Algorithm. - Ju-In Youn; He-Jue Eun; Yong-Sung Kim (ICCSA (2), 2005)