Distance function learning in error-correcting output coding framework

  • Authors:
  • Dijun Luo;Rong Xiong

  • Affiliations:
  • National Lab of Industrial Control Technology, Zhejiang University, China;National Lab of Industrial Control Technology, Zhejiang University, China

  • Venue:
  • ICONIP'06 Proceedings of the 13th international conference on Neural Information Processing - Volume Part II
  • Year:
  • 2006

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Abstract

This paper presents a novel framework of error-correcting output coding (ECOC) addressing the problem of multi-class classification. By weighting the output space of each base classifier which is trained independently, the distance function of decoding is adapted so that the samples are more discriminative. A criterion generated over the Extended Pair Samples (EPS) is proposed to train the weights of output space. Some properties still hold in the new framework: any classifier, as well as distance function, is still applicable. We first conduct empirical studies on UCI datasets to verify the presented framework with four frequently used coding matrixes and then apply it in RoboCup domain to enhance the performance of agent control. Experimental results show that our supervised learned decoding scheme improves the accuracy of classification significantly and betters the ball control of agents in a soccer game after learning from experience.