A Three-Stage Evolutionary Process for Learning Descriptive and Approximate Fuzzy-Logic-Controller Knowledge Bases From Examples
Metadatos
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ELSEVIER
Materia
Fuzzy logic controllers Fuzzy-logic-controller knowledge base Genetic algorithms Evolution strategies Niching Inductive learning
Fecha
1997Referencia bibliográfica
Cordon, O., & Herrera, F. (1997). A three-stage evolutionary process for learning descriptive and approximate fuzzy-logic-controller knowledge bases from examples. International Journal of Approximate Reasoning, 17(4), 369-407. [doi: 10.1016/S0888-613X(96)00133-8]
Resumen
Nowadays fuzzy logic controllers have been successfully applied to a wide range of
engineering control processes. Several tasks have to be performed in order to design an
intelligent control system of this kind for a concrete application. One of the most
important and difficult ones is the extraction of the expert known knowledge of the
controlled system. The aim of this paper is to present an evolutionary process based on
genetic algorithms and evolution strategies for learning the fuzzy-logic-controller knowledge base from examples in three different stages. The process allows us to generate two
different kinds of knowledge bases, descriptive and approximate ones, depending on the
scope of the fuzzy sets giving meaning to the fuzzy-control-rule linguistic terms, taking
preliminary linguistic-variable fuzzy partitions as a base. The performance of the
method proposed is shown by measuring the accuracy of the fuzzy logic controllers
designed in the fuzzy modeling of three three-dimensional surfaces presenting different characteristics, and by comparing them with others generated by means of three
methods based on Wang and Mendel's knowledge-base generation process.