type2fuzzy 0.1.37

Library for type-2 fuzzy logic research

Project Description : version 0.1.34

A type-2 fuzzy logic library providing:

1. Ways to define and work with general type-2 fuzzy sets
2. Ways to define and work with interval type-2 fuzzy sets
3. Ways to generate z-sliced sets from general type-2 fuzzy sets
4. Functions to perform wavy-slice type-reduction (Mendel-John) on general type-2 fuzzy sets
5. Functions to perform interval type-2 reduction (Karnik-Mendel)
6. Functions to perform partial-centroid type-reduction on general type-2 fuzzy sets
7. Functions to perform defuzzification of type-1 fuzzy sets
8. Tools to measure the performance of algorithms
9. Tools to plot general, interval and z-sliced type-2 fuzzy sets and type-1 fuzzy sets. and more

All type2fuzzy wheels distributed on PyPI are BSD licensed.

Examples of how this library was used to work some famous type-2 fuzzy logic papers can be found here:

https://github.com/carmelgafa/type2fuzzy_examples

Website

http://t2fuzz.com

Change History:

version 0.1.37 - 07.03.2020

1. Fixed bugs in creation of type-1 fuzzy sets
2. Moved project in a virtualenv
3. Added more type-1 fuzzy set unit tests

version 0.1.36 - 18.02.2020

1. Added generation of triangular type-1 sets unit test. Removed extended method

version 0.1.35 - 18.02.2020

1. Fixed bug in generation of triangular type-1 sets

version 0.1.34 - 18.11.2019

1. Ability to create Interval Type-2 fuzzy sets having a gaussian function with fixed mean and fixed standard deviation as per Karnik and Mendel 1996

• Karnik, Nilesh N., and Jerry M. Mendel. "Introduction to type-2 fuzzy logic systems." 1998 IEEE International Conference on Fuzzy Systems Proceedings. IEEE World Congress on Computational Intelligence (Cat. No. 98CH36228). Vol. 2. IEEE, 1998. (http://t2fuzz.com/membership/generate_it2fs.html)

2. An experimental way to define General Type-2 fuzzy sets through horizonal slices (http://t2fuzz.com/membership/generate_gt2mf.html)

version 0.1.33 - 15.11.2019

1. Updated repo information

version 0.1.32 - 15.11.2019

1. Get domain limits for a type-1 fuzzy set (http://t2fuzz.com/membership/type1fuzzyset.html#type2fuzzy.membership.type1fuzzyset.Type1FuzzySet.domain_limits)

version 0.1.31 - 12.11.2019

1. Added library website (http://t2fuzz.com)
2. Convert a gt2fs into an it2fs - An it2fs can be generated form a gt2fs by using from_general_type2_set (http://t2fuzz.com/membership/intervaltype2fuzzyset.html#type2fuzzy.membership.intervaltype2fuzzyset.IntervalType2FuzzySet.from_general_type2_set)
3. Creation of it2fs as found in literature - Creation of it2fs as specified by Karnik and Mendel (http://t2fuzz.com/membership/generate_it2fs.html)