Generating hierarchical fuzzy concepts from large databases. - Been-Chian Chien; Chih-Hung Hu; Steen J. Hsu (SMC (4), 2004)

Learning fuzzy concept hierarchy and measurement with node labeling. - Been-Chian Chien; Chih-Hung Hu; Ming-Yi Ju (Inf. Syst. Frontiers, 2009)

Ontology-Based Information Retrieval Using Fuzzy Concept Documentation. - Been-Chian Chien; Chih-Hung Hu; Ming-Yi Ju (Cybern. Syst., 2010)