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- W4366202088 abstract "In the domain of text classification, imbalanced datasets are a common occurrence. The skewed distribution of the labels of these datasets poses a great challenge to the performance of text classifiers. One popular way to mitigate this challenge is to augment underwhelmingly represented labels with synthesized items. The synthesized items are generated by data augmentation methods that can typically generate an unbounded number of items. To select the synthesized items that maximize the performance of text classifiers, we introduce a novel method that selects items that jointly maximize the likelihood of the items belonging to their respective labels and the diversity of the selected items. Our proposed method formulates the joint maximization as a monotone submodular objective function, whose solution can be approximated by a tractable and efficient greedy algorithm. We evaluated our method on multiple real-world datasets with different data augmentation techniques and text classifiers and compared results with several baselines. The experimental results demonstrate the effectiveness and efficiency of the proposed method." @default.
- W4366202088 created "2023-04-19" @default.
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- W4366202088 date "2023-01-01" @default.
- W4366202088 modified "2023-10-05" @default.
- W4366202088 title "A Submodular Optimization Framework for Imbalanced Text Classification With Data Augmentation" @default.
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- W4366202088 doi "https://doi.org/10.1109/access.2023.3267669" @default.
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