Type-2 fuzzy sets and systems: an overview

  • Authors:
  • J. M. Mendel

  • Affiliations:
  • Southern California Univ.

  • Venue:
  • IEEE Computational Intelligence Magazine
  • Year:
  • 2007

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Abstract

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 different from a T1 FS? Is there new terminology for a T2 FS? Are there important representations of a T2 FS and, if so, why are they important? How and why are T2 FSs used in a rule-based system? What are the detailed computations for an interval T2 fuzzy logic system (IT2 FLS) and are they easy to understand? Is it possible to have an IT2 FLS without type reduction? How do we wrap this up and where can we go to learn more?