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Monotonic Fuzzy Systems With Goniometric Membership Functions

Abstract

Fuzzy logic-based systems are nowadays commonly used in nonlinear function approximation when incoming data are available. Their main advantage is that the resulting rules can be interpreted understandably. Nevertheless, when the data are noisy an overfitting may occur which leads to poor accuracy and generalization ability. Prior information about the nonlinear function may improve fuzzy system performance. In this paper the case when the function is monotonic with respect to some or all variables is considered. Sufficient conditions for the monotonicity of first-order Takagi-Sugeno fuzzy systems with raised cosine membership functions are derived. Performance of the proposed fuzzy system is tested on two benchmark datasets

article Article; Early Access
date_range 2024
language English
link Link of the paper
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Featured Keywords

Monotonic fuzzy system
Smooth membership functions
Nonlinear regression
Prior knowledge
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