Interval sets and hesitant fuzzy sets capture two types of hesitant situations and provide
novel expression formats for decision makers. The authors propose a new hesitant fuzzy …

For decision makers, expressing their opinions through subintervals of [0, 1] is sometimes
easier than using crisp numbers. This study defines some outranking relations derived by …

Hesitant interval-valued fuzzy set, which allows decision makers to use several interval
numbers to assess a variable, is a useful tool to deal with situations in which people are …

To cope with the hesitancy and uncertainty of the decision makers' cognitions to decision-
making problems, this paper introduces a new type of fuzzy sets called linguistic interval …

Against existing literature about decision-making methods having deficiencies in flexible
and lacking of original information, this paper presents some priority degree formulas in …

Hesitant interval-valued fuzzy set is an extension of hesitant fuzzy set. It permits the
membership degree of an element to a set to be represented as several possible interval …

Interval-valued hesitant fuzzy sets (IVHFSs), as an extension of hesitant fuzzy sets, can
account for the membership degrees of an element to a given set having a few different …

This paper proposes the concept of interval type-2 hesitant fuzzy set (IT2HFS), which is a
generalization of interval type-2 fuzzy set and hesitant fuzzy set. Firstly, IT2HFS is defined …

As a powerful and efficient tool in expressing the indeterminate and fuzzy information, the
hesitant fuzzy set (HFS) has shown its increasing importance. It was first proposed by Torra …

Ordering sets is a long-standing open problem due to its remarkable importance in many
areas such as decision making, image processing or human reliability. This work is focused …