Fuzzy interpolative reasoning via scale and move transformation

Qiang Shen, Zhiheng Huang

Research output: Contribution to journalArticlepeer-review

207 Citations (SciVal)
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Abstract

Interpolative reasoning does not only help reduce the complexity of fuzzy models but also makes inference in sparse rule-based systems possible. This paper presents an interpolative reasoning method by means of scale and move transformations. It can be used to interpolate fuzzy rules involving complex polygon, Gaussian or other bell-shaped fuzzy membership functions. The method works by first constructing a new inference rule via manipulating two given adjacent rules, and then by using scale and move transformations to convert the intermediate inference results into the final derived conclusions. This method has three advantages thanks to the proposed transformations: 1) it can handle interpolation of multiple antecedent variables with simple computation; 2) it guarantees the uniqueness as well as normality and convexity of the resulting interpolated fuzzy sets; and 3) it suggests a variety of definitions for representative values, providing a degree of freedom to meet different requirements. Comparative experimental studies are provided to demonstrate the potential of this method.
Original languageEnglish
Pages (from-to)340-359
Number of pages20
JournalIEEE Transactions on Fuzzy Systems
Volume14
Issue number2
DOIs
Publication statusPublished - Apr 2006

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