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On oversampling imbalanced data with deep conditional generative models
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DOI：10.1016/j.eswa.2020.114463.png)
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摘要
En 中文
Class imbalanced datasets are common in real-world applications ranging from credit card fraud detection to rare disease diagnosis. Recently, deep generative models have proved successful for an array of machine learning problems such as semi-supervised learning, transfer learning, and recommender systems. However their application to class imbalance situations is limited. In this paper, we consider class conditional variants of generative adversarial networks and variational autoencoders and apply them to the imbalance problem. The main question we seek to answer is whether or not deep conditional generative models can effectively learn the distributions of minority classes so as to produce synthetic observations that ultimately lead to improvements in the performance of a downstream classifier. The numerical results show that this is indeed true and that deep generative models outperform traditional oversampling methods in many circumstances, especially in cases of severe imbalance.
Keyword:
Deep generative models
Conditional variational autoencoders
Class imbalance
Oversampling
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期刊
IF:
7.5
论文数:
2.9W
被引数:
10.2W
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