The hesitant fuzzy linguistic term set (HFLTS) is a new and flexible tool in representing
hesitant qualitative information in decision making. Correlation measures and correlation …

Ignorance and Uncertainty overviews a variety of approaches to the problem of
indeterminacies in human thought and behavior. This book examines, in depth, trends in the …

Many measures of similarity among fuzzy sets have been proposed in the literature, and
some have been incorporated into linguistic approximation procedures. The motivations …

This paper proposes two new similarity measures to represent the similarity measure
between fuzzy sets and between elements, respectively. These similarity measures can be …

Intuitionistic fuzzy set is a significance soft computing tool for curbing fuzziness embedded in
decision‐making processes. To enhance the applicability of intuitionistic fuzzy sets in …

Hesitant fuzzy set (HFS) is now attracting more and more scholars' attention due to its
efficiency in representing comprehensively uncertain and vague information. Considering …

This chapter is an overview of past and present works dealing with fuzzy intervals and their
operations. A fuzzy interval is a fuzzy set in the real line whose level-cuts are intervals …

In this paper, we propose a method to calculate the correlation coefficient of intuitionistic
fuzzy sets by means of “centroid”. This value obtained from our formula tell us not only the …

This paper is an introduction to fuzzy set theory. It has several purposes. First, it tries to
explain the emergence of fuzzy sets from an historical perspective. Looking back to the …

Fuzzy data such as marks, scores, verbal evaluations, imprecise observations, experts'
opinions and grey tone pictures, are quite common. In Fuzzy Data Analysis the authors …