File Exchange

image thumbnail

Functions for interval type-2 fuzzy logic systems

version 1.3 (2.24 MB) by

Implement interval type-2 fuzzy logic systems and a very efficient type-reduction algorithm.



View License

This package contains the following files:
example.m: Illustrates how to use the function IT2FLS.

IT2FLS.m: Implements an interval type-2 fuzzy logic system.

A Brief Tutorial on Interval Type-2 Fuzzy Sets and Systems.pdf

Designing Practical Interval Type-2 Fuzzy Logic Systems Made Simple.pdf

Approaches for Reducing the Computational Cost of Interval Type-2 Fuzzy Logic Systems Overview and Comparisons.pdf

Representation of an IT2 FS.pdf

All these files, and many other useful papers, can also be downloaded from

Comments and Ratings (9)

Chi Zhang


Vuqar (view profile)

how to download it2fls toolbox not able to do it

Pardon the ignorance, but if I change the model instead of 9 points to less; do I need to change all averages?
Do I need to do so when I only have three critical points or categories?


Nur (view profile)

If we have inputs only then how can we create a matrix for the antecedent and consequent part in a rulebase?

Dongrui Wu

Sorry for the bad link. Updated.


this link is worst!or dameged


chan (view profile)

Like what the author said, the Representation is intuitive to understand. The software is useful!

Tamim Ahmed




New and updated documentaions are added.


Updated the link to many other papers.


Updated the type reduction algorithm.

MATLAB Release
MATLAB 7.8 (R2009a)

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video