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Interval type-2 fuzzy logic systems: theory and design

Published: 01 October 2000 Publication History

Abstract

We present the theory and design of interval type-2 fuzzy logic systems (FLSs). We propose an efficient and simplified method to compute the input and antecedent operations for interval type-2 FLSs: one that is based on a general inference formula for them. We introduce the concept of upper and lower membership functions (MFs) and illustrate our efficient inference method for the case of Gaussian primary MFs. We also propose a method for designing an interval type-2 FLS in which we tune its parameters. Finally, we design type-2 FLSs to perform time-series forecasting when a nonstationary time-series is corrupted by additive noise where SNR is uncertain and demonstrate an improved performance over type-1 FLSs

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cover image IEEE Transactions on Fuzzy Systems
IEEE Transactions on Fuzzy Systems  Volume 8, Issue 5
October 2000
162 pages

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IEEE Press

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Published: 01 October 2000

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