Recent years have witnessed a widespread in the use of interval type-2 fuzzy logic systems
(IT2 FLSs) in real-world applications. It has been shown recently that interval type-2 fuzzy …

This letter makes some observations about “Interval type-2 fuzzy sets are generalization of
interval-valued fuzzy sets: Towards a wide view on their relationship,” IEEE Trans. Fuzzy …

This tutorial illustrates the basic ideas of interval type-2 (IT2) fuzzy sets and systems, and
provides a Matlab implementation of IT2 fuzzy logic system (FLS). One obstacle in learning …

To date, because of the computational complexity of using a general type-2 fuzzy set (T2 FS)
in a T2 fuzzy logic system (FLS), most people only use an interval T2 FS, the result being an …

In 1975, Zadeh proposed Type-2 Fuzzy Sets (T2 FS) as an extension to the previously
introduced ordinary fuzzy sets (now called type-1 fuzzy sets). Type-2 fuzzy sets have the …

This paper provides an answer to the question that the type-2 fuzzy logic community is now
asking:“What comes after interval type-2 fuzzy logic systems (TT2 FLSs)?” It demonstrates …

This paper provides an introduction to and an overview of type-2 fuzzy sets (T2 FS) and
systems. It does this by answering the following questions: What is a T2 FS and how is it …

The purpose of this tutorial paper is to make general type-2 fuzzy logic systems (GT2 FLSs)
more accessible to fuzzy logic researchers and practitioners, and to expedite their research …

This standard consists of background material about interval type-2 fuzzy sets, interval type-
2 fuzzy logic systems (IT2 FLSs), type-reduction and defuzzification in an IT2 FLS, and an …

In this paper, we will present two theorems for the join and meet operations for general type-
2 fuzzy sets with arbitrary secondary memberships, which can be nonconvex and/or …