Multilayer Feedforward Ensembles for Classification Problems

  • Mercedes Fernández-Redondo
  • Carlos Hernández-Espinosa
  • Joaquín Torres-Sospedra
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3316)

Abstract

As shown in the bibliography, training an ensemble of networks is an interesting way to improve the performance with respect to a single network. However there are several methods to construct the ensemble and there are no complete results showing which one could be the most appropriate. In this paper we present a comparison of eleven different methods. We have trained ensembles of 3, 9, 20 and 40 networks to show results in a wide spectrum of values. The results show that the improvement in performance above 9 networks in the ensemble depends on the method but it is usually marginal. Also, the best method is called “Decorrelated” and uses a penalty term in the usual Backpropagation function to decorrelate the network outputs in the ensemble.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Mercedes Fernández-Redondo
    • 1
  • Carlos Hernández-Espinosa
    • 1
  • Joaquín Torres-Sospedra
    • 1
  1. 1.Dept. de Ingeniería y Ciencia de los ComputadoresUniversidad Jaume I.CastellonSpain

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