A Variable Step Size LMS Algorithm Using Fuzzy Logic. - Chul-Heui Lee; Ronald R. Yager (J. Intell. Fuzzy Syst., 1996)

Efficient Extraction of Hierarchically Structured Rules Using Rough Sets. - Chul-Heui Lee; Seon-Hak Seo (Int. J. Fuzzy Log. Intell. Syst., 2004)

Optimization of multiple model fuzzy systems using RCGKA and their application. - Young-Keun Bang; Chul-Heui Lee (FUZZ-IEEE, 2009)

Fuzzy time series prediction using hierarchical clustering algorithms. - Young-Keun Bang; Chul-Heui Lee (Expert Syst. Appl., 2011)