Evolving Fuzzy Rules with UCS: Preliminary Results

  • Authors:
  • Albert Orriols-Puig;Jorge Casillas;Ester Bernadó-Mansilla

  • Affiliations:
  • Grup de Recerca en Sistemes Intel.ligents Enginyeria i Arquitectura La Salle, Universitat Ramon Llull, Barcelona, Spain 08022;Dept. Computer Science and Artificial Intelligence, University of Granada, Granada, Spain 18071;Grup de Recerca en Sistemes Intel.ligents Enginyeria i Arquitectura La Salle, Universitat Ramon Llull, Barcelona, Spain 08022

  • Venue:
  • Learning Classifier Systems
  • Year:
  • 2008

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Abstract

This paper presents Fuzzy-UCS, a Michigan-style Learning Fuzzy-Classifier System designed for supervised learning tasks. Fuzzy-UCS combines the generalization capabilities of UCS with the good interpretability of fuzzy rules to evolve highly accurate and understandable rule sets. Fuzzy-UCS is tested on a large collection of real-world problems, and compared to UCS and three highly-used machine learning techniques: the decision tree C4.5, the support vector machine SMO, and the fuzzy boosting algorithm Fuzzy LogitBoost. The results show that Fuzzy-UCS is highly competitive with respect to the four learners in terms of performance, and that the fuzzy representation permits a much better understandability of the evolved knowledge. These promising results of the online architecture of Fuzzy-UCS allow for further research and application of the system to new challenging problems.