Dual hesitant fuzzy sets (DHFSs), originally introduced by Zhu et al.[23], are a new tool to
handle fuzziness considering the membership and nonmembership degrees by a set of …

Hesitant fuzzy sets (HFSs), interval-valued hesitant fuzzy sets (IVHFSs) and typical dual
hesitant fuzzy sets (T-DHFSs) are new extensions of classical fuzzy sets (FSs) that have …

Hesitant fuzzy set (HFS), which permits the membership having a set of possible values, has
turned out to be a powerful structure in expressing uncertainty and vagueness. In this paper …

Typical hesitant fuzzy sets (THFSs), possessing a finite-set-valued fuzzy membership
degrees called typical hesitant fuzzy elements (THFEs), is a special kind of hesitant fuzzy …

In this study, we extend the hesitant fuzzy set (HFS) to its higher order type and refer to it as
the higher order hesitant fuzzy set (HOHFS). HOHFS is the actual extension of HFS that …

Hesitant fuzzy sets (HFSs) are a useful tool to manage situations in which the decision
makers (DMs) hesitate about several possible values for the membership to assess a …

Hesitant fuzzy sets are very useful to deal with group decision making problems when
experts have a hesitation among several possible memberships for an element to a set …

Dual hesitant fuzzy set, first proposed by Zhu et al.(Dual hesitant fuzzy sets, J Appl Math, 1–
13, 2012) as an extension of hesitant fuzzy sets, which encompass fuzzy sets, intuitionistic …

Dual hesitant fuzzy sets (DHFSs), which consist of the membership and the nonmembership
hesitancy function, offer a flexible tool when decision makers give their opinions. The main …

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 …