A class-modular GLVQ ensemble with outlier learning for handwritten digit recognition

  • Authors:
  • Katsuhiko Takahashi;Daisuke Nishiwaki

  • Affiliations:
  • -;-

  • Venue:
  • ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 1
  • Year:
  • 2003

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Abstract

A class-modular generalized learning vector quantization(GLVQ) ensemble method with outlier learning forhandwritten digit recognition is proposed. A GLVQ classifieris one of discriminative methods. Though discriminativeclassifiers have remarkable ability to solve characterrecognition problems, they are poor at outlier resistance. Toovercome this problem, a GLVQ classifier trained with bothdigit images and outlier images is introduced. Moreover,the original 10-classification problem is separated into ten2-classification problems using ten GLVQ classifiers, eachof which recognizes its corresponding digit class. Experimentalresults of handwritten digit recognition and outlierrejection reveal that our method is far more superior at outlierresistance than a conventional GLVQ classifier, whilemaintaining its digit recognition performance.