Rule Extraction from Radial Basis Function Networks by Using Support Vectors

  • Authors:
  • Haydemar Núñez;Cecilio Angulo;Andreu Català

  • Affiliations:
  • -;-;-

  • Venue:
  • IBERAMIA 2002 Proceedings of the 8th Ibero-American Conference on AI: Advances in Artificial Intelligence
  • Year:
  • 2002

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Abstract

In this paper, a procedure for rule extraction from radial basis function networks (RBFNs) is proposed. The algorithm is based on the use of a support vector machine (SVM) as a frontier pattern selector. By using geometric methods, centers of the RBF units are combined with support vectors in order to construct regions (ellipsoids or hyper-rectangles) in the input space, which are later translated to if-then rules. Additionally, the support vectors are used to determine overlapping between classes and to refine the rule base. The experimental results indicate that a very high fidelity between RBF network and the extracted set of rules can be achieved with low overlapping between classes.