Uncertain Fuzzy Clustering: Interval Type-2 Fuzzy Approach to $C$-Means.

Cheul Hwang Frank Chung-Hoon Rhee Uncertain Fuzzy Clustering: Interval Type-2 Fuzzy Approach to $C$-Means. 107-120 2007 15 IEEE T. Fuzzy Systems 1 http://dx.doi.org/10.1109/TFUZZ.2006.889763 db/journals/tfs/tfs15.html#HwangR07