Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets

In support of reasoning with sparse rule bases, fuzzy rule interpolation (FRI) offers a helpful inference mechanism for deriving an approximate conclusion when a given observation has no overlap with any rule in the existing rule base. One of the recent and popular FRI approaches is the scale and mo...

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Main Authors: Chengyuan Chen, Qiang Shen
Format: Article
Language:English
Published: MDPI AG 2017-08-01
Series:Algorithms
Subjects:
Online Access:https://www.mdpi.com/1999-4893/10/3/91
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author Chengyuan Chen
Qiang Shen
author_facet Chengyuan Chen
Qiang Shen
author_sort Chengyuan Chen
collection DOAJ
description In support of reasoning with sparse rule bases, fuzzy rule interpolation (FRI) offers a helpful inference mechanism for deriving an approximate conclusion when a given observation has no overlap with any rule in the existing rule base. One of the recent and popular FRI approaches is the scale and move transformation-based rule interpolation, known as T-FRI in the literature. It supports both interpolation and extrapolation with multiple multi-antecedent rules. However, the difficult problem of defining the precise-valued membership functions required in the representation of fuzzy rules, or of the observations, restricts its applications. Fortunately, this problem can be alleviated through the use of type-2 fuzzy sets, owing to the fact that the membership functions of such fuzzy sets are themselves fuzzy, providing a more flexible means of modelling. This paper therefore, extends the existing T-FRI approach using interval type-2 fuzzy sets, which covers the original T-FRI as its specific instance. The effectiveness of this extension is demonstrated by experimental investigations and, also, by a practical application in comparison to the state-of-the-art alternative approach developed using rough-fuzzy sets.
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spelling doaj.art-eb00f0d402754b6bb8a809955a66c8e22022-12-22T01:21:52ZengMDPI AGAlgorithms1999-48932017-08-011039110.3390/a10030091a10030091Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy SetsChengyuan Chen0Qiang Shen1School of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing 401331, ChinaDepartment of Computer Science, Institute of Mathematics, Physics and Computer Science, Aberystwyth University, Aberystwyth SY23 3DB, UKIn support of reasoning with sparse rule bases, fuzzy rule interpolation (FRI) offers a helpful inference mechanism for deriving an approximate conclusion when a given observation has no overlap with any rule in the existing rule base. One of the recent and popular FRI approaches is the scale and move transformation-based rule interpolation, known as T-FRI in the literature. It supports both interpolation and extrapolation with multiple multi-antecedent rules. However, the difficult problem of defining the precise-valued membership functions required in the representation of fuzzy rules, or of the observations, restricts its applications. Fortunately, this problem can be alleviated through the use of type-2 fuzzy sets, owing to the fact that the membership functions of such fuzzy sets are themselves fuzzy, providing a more flexible means of modelling. This paper therefore, extends the existing T-FRI approach using interval type-2 fuzzy sets, which covers the original T-FRI as its specific instance. The effectiveness of this extension is demonstrated by experimental investigations and, also, by a practical application in comparison to the state-of-the-art alternative approach developed using rough-fuzzy sets.https://www.mdpi.com/1999-4893/10/3/91fuzzy rule interpolationinterval type-2 fuzzy setstransformation-based interpolation
spellingShingle Chengyuan Chen
Qiang Shen
Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
Algorithms
fuzzy rule interpolation
interval type-2 fuzzy sets
transformation-based interpolation
title Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
title_full Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
title_fullStr Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
title_full_unstemmed Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
title_short Transformation-Based Fuzzy Rule Interpolation Using Interval Type-2 Fuzzy Sets
title_sort transformation based fuzzy rule interpolation using interval type 2 fuzzy sets
topic fuzzy rule interpolation
interval type-2 fuzzy sets
transformation-based interpolation
url https://www.mdpi.com/1999-4893/10/3/91
work_keys_str_mv AT chengyuanchen transformationbasedfuzzyruleinterpolationusingintervaltype2fuzzysets
AT qiangshen transformationbasedfuzzyruleinterpolationusingintervaltype2fuzzysets