Publication
ICDM 2019
Conference paper

Generative oversampling with a contrastive variational autoencoder

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Abstract

Although oversampling methods are widely used to deal with class imbalance problems, most only utilize observed samples in the minority class and ignore the rich information available in the majority class. In this work, we use an oversampling method that leverages information in both the majority and minority classes to mitigate the class imbalance problem. Experimental results on two clinical datasets with highly imbalanced outcomes demonstrate that prediction models can be significantly improved using data obtained from this oversampling method when the number of minority class samples is very small.

Date

01 Nov 2019

Publication

ICDM 2019

Authors

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