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FRIwE: fuzzy rule identification with exceptions

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3 Author(s)
P. Carmona ; Dept. de Informatica, Univ. de Extremadura, Badajoz, Spain ; J. L. Castro ; J. M. Zurita

In this paper, the FRIwE method is proposed to identify fuzzy models from examples. Such a method has been developed trying to achieve a double goal:accuracy and interpretability. In order to do that, maximal structure fuzzy rules are firstly obtained based on a method proposed by Castro et al. In a second stage, the conflicts generated by the maximal rules are solved, thus increasing the model accuracy. The resolution of conflicts are carried out by including exceptions in the rules. This strategy has been identified by psychologists with the learning mechanism employed by the human being, thus improving the model interpretability. Besides, in order to improve the interpretability even more, several methods are presented based on reducing and merging rules and exceptions in the model. The exhaustive use of the training examples gives the method a special suitability for problems with small training sets or high dimensionality. Finally, the method is applied to an example in order to analyze the achievement of the goals.

Published in:

IEEE Transactions on Fuzzy Systems  (Volume:12 ,  Issue: 1 )