Two information-theoretic tools to assess the performance of multi-class classifiers

  • Authors:
  • Francisco J. Valverde-Albacete;Carmen Peláez-Moreno

  • Affiliations:
  • Departamento de Teoría de la Señal y de las Comunicaciones, Universidad Carlos III de Madrid, Avda de la Universidad, 30, 28911 Leganés, Spain;Departamento de Teoría de la Señal y de las Comunicaciones, Universidad Carlos III de Madrid, Avda de la Universidad, 30, 28911 Leganés, Spain

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2010

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Abstract

We develop two tools to analyze the behavior of multiple-class, or multi-class, classifiers by means of entropic measures on their confusion matrix or contingency table. First we obtain a balance equation on the entropies that captures interesting properties of the classifier. Second, by normalizing this balance equation we first obtain a 2-simplex in a three-dimensional entropy space and then the de Finetti entropy diagram or entropy triangle. We also give examples of the assessment of classifiers with these tools.