Weighting Efficient Accuracy and Minimum Sensitivity for Evolving Multi-Class Classifiers

Authors:
Javier Sánchez-Monedero;Pedro A. Gutiérrez;F. Fernández-Navarro;C. Hervás-Martínez
Affiliations:
Department of Computer Science and Numerical Analysis, University of Córdoba, Córdoba, Spain 14071;Department of Computer Science and Numerical Analysis, University of Córdoba, Córdoba, Spain 14071;Department of Computer Science and Numerical Analysis, University of Córdoba, Córdoba, Spain 14071;Department of Computer Science and Numerical Analysis, University of Córdoba, Córdoba, Spain 14071
Venue:
Neural Processing Letters
Year:
2011

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Abstract

Recently, a multi-objective Sensitivity---Accuracy based methodology has been proposed for building classifiers for multi-class problems. This technique is especially suitable for imbalanced and multi-class datasets. Moreover, the high computational cost of multi-objective approaches is well known so more efficient alternatives must be explored. This paper presents an efficient alternative to the Pareto based solution when considering both Minimum Sensitivity and Accuracy in multi-class classifiers. Alternatives are implemented by extending the Evolutionary Extreme Learning Machine algorithm for training artificial neural networks. Experiments were performed to select the best option after considering alternative proposals and related methods. Based on the experiments, this methodology is competitive in Accuracy, Minimum Sensitivity and efficiency.