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On the Design of Low Redundancy Error-Correcting Output Codes

Chapter
Part of the Studies in Computational Intelligence book series (SCI, volume 373)

Abstract

The classification of large number of object categories is a challenging trend in the Pattern Recognition field. In the literature, this is often addressed using an ensemble of classifiers . In this scope, the Error-Correcting Output Codes framework has demonstrated to be a powerful tool for combining classifiers. However, most of the state-of-the-art ECOC approaches use a linear or exponential number of classifiers, making the discrimination of a large number of classes unfeasible. In this paper, we explore and propose a compact design of ECOC in terms of the number of classifiers. Evolutionary computation is used for tuning the parameters of the classifiers and looking for the best compact ECOC code configuration. The results over several public UCI data sets and different multi-class Computer Vision problems show that the proposed methodology obtains comparable (even better) results than the state-of-the-art ECOC methodologies with far less number of dichotomizers.

Keywords

Machine Learn Research Binary Problem Multiclass Problem Codeword Length Face Category 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Applied Math and Analysis DepartmentUniversity of BarcelonaBarcelonaSpain
  2. 2.Computer Vision CenterAutonomous University of BarcelonaCerdanyolaSpain
  3. 3.Universitat Oberta de CatalunyaBarcelonaSpain

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