Abstract
Performance of classifier ensembles depends on the precision and on the diversity of the members of the ensemble. In this paper we present an experimental study in which the relationship between the accuracy of the ensemble and both the diversity and the accuracy of base learners is analyzed. We conduct experiments on 8 different ANN ensembles and on 5 multiclass data sets. Experimental results show that a high diversity degree among the base learners does not always imply a high accuracy in the ensemble.
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Notes
- 1.
Note than, by definition, BCE is built using a feature selection process. Nevertheless, in this work BCE, as the other classification models, is built using both, the full feature space (removing the feature selection step) and the feature subsets obtained by applying BF + CFS.
- 2.
Enlarged figures are available at [26].
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Acknowledgments
This research was supported by the Spanish MINECO under projects TRA2016-78886-C3-1-R and TRA2015-63708-R, and by CAM under project S2013/MIT-3024.
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Sesmero, M.P., Alonso-Weber, J.M., Giuliani, A., Armano, G., Sanchis, A. (2018). Measuring Diversity and Accuracy in ANN Ensembles. In: Herrera, F., et al. Advances in Artificial Intelligence. CAEPIA 2018. Lecture Notes in Computer Science(), vol 11160. Springer, Cham. https://doi.org/10.1007/978-3-030-00374-6_11
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