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Authors: Vicente García ; J. Salvador Sánchez and Ramón A. Mollineda

Affiliation: Universitat Jaume I, Spain

Keyword(s): Performance measure, Class imbalance problem, Classification.

Related Ontology Subjects/Areas/Topics: Classification ; Model Selection ; Pattern Recognition ; Theory and Methods

Abstract: The class imbalance problem has been reported as an important challenge in various fields such as Pattern Recognition, Data Mining and Machine Learning. A less explored research area is related to how to evaluate classifiers on imbalanced data sets. This work analyzes the behaviour of performance measures widely used on imbalanced problems, as well as other metrics recently proposed in the literature. We perform two theoretical analysis based on Pearson correlation and operations for a 2×2 confusion matrix with the aim to show the strengths and weaknesses of those performance metrics in the presence of skewed distributions.

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Paper citation in several formats:
García, V.; Salvador Sánchez, J. and A. Mollineda, R. (2012). ON THE SUITABILITY OF NUMERICAL PERFORMANCE MEASURES FOR CLASS IMBALANCE PROBLEMS. In Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM; ISBN 978-989-8425-98-0; ISSN 2184-4313, SciTePress, pages 310-313. DOI: 10.5220/0003783303100313

@conference{icpram12,
author={Vicente García. and J. {Salvador Sánchez}. and Ramón {A. Mollineda}.},
title={ON THE SUITABILITY OF NUMERICAL PERFORMANCE MEASURES FOR CLASS IMBALANCE PROBLEMS},
booktitle={Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM},
year={2012},
pages={310-313},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003783303100313},
isbn={978-989-8425-98-0},
issn={2184-4313},
}

TY - CONF

JO - Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 2: ICPRAM
TI - ON THE SUITABILITY OF NUMERICAL PERFORMANCE MEASURES FOR CLASS IMBALANCE PROBLEMS
SN - 978-989-8425-98-0
IS - 2184-4313
AU - García, V.
AU - Salvador Sánchez, J.
AU - A. Mollineda, R.
PY - 2012
SP - 310
EP - 313
DO - 10.5220/0003783303100313
PB - SciTePress