Comparing multi-class classifiers: on the similarity of confusion matrices for predictive toxicology applications

  • Authors:
  • Mokhairi Makhtar;Daniel C. Neagu;Mick J. Ridley

  • Affiliations:
  • School of Computing, Informatics and Media, University of Bradford, Bradford, UK;School of Computing, Informatics and Media, University of Bradford, Bradford, UK;School of Computing, Informatics and Media, University of Bradford, Bradford, UK

  • Venue:
  • IDEAL'11 Proceedings of the 12th international conference on Intelligent data engineering and automated learning
  • Year:
  • 2011

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Abstract

Calculating the similarity of predictive models helps to characterize the models diversity and to identify relevant models from a collection of models. The relevant models are considered based on their performance, calculated using their confusion matrix. In this paper, we propose a methodology to measure the similarity for predictive models performances by comparing their confusion matrices. In this research, we focus on multi-class classifiers for toxicology applications. The performance measures of confusion matrices of multi-class classifiers are regrouped into a binary classification problem. Such approach may result in selecting multi-class classifiers with lower False Negative Rate (FNR) for example. Consequently, the methodology for model comparison based on the similarity of confusion matrices provides a working way to select models from a collection of classifiers.