Vol. 1, Issue 11, Part H (2015)

Abstract
Similarity measure plays a vital role in pattern recognition and medical diagnosis. In this paper, a new rough fuzzy cotangent similarity measure between two rough fuzzy sets is formulated. Moreover, considering the importance of each element, the weighted rough fuzzy cotangent similarity (WRFS) is proposed. We also provide a numerical example to show the effectiveness and the flexibility of the proposed method.