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A Survey of Data Augmentation Approaches for NLP

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arxiv 2105.03075 v5 pith:IM6CHVOU submitted 2021-05-07 cs.CL cs.AIcs.LG

Steven Y. Feng , Varun Gangal , Jason Wei , Sarath Chandar , Soroush Vosoughi , Teruko Mitamura , Eduard Hovy This is my paper
classification cs.CLcs.AIcs.LG
keywords dataaugmentationapproachesareachallengesgithubliteraturemotivate
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Data augmentation has recently seen increased interest in NLP due to more work in low-resource domains, new tasks, and the popularity of large-scale neural networks that require large amounts of training data. Despite this recent upsurge, this area is still relatively underexplored, perhaps due to the challenges posed by the discrete nature of language data. In this paper, we present a comprehensive and unifying survey of data augmentation for NLP by summarizing the literature in a structured manner. We first introduce and motivate data augmentation for NLP, and then discuss major methodologically representative approaches. Next, we highlight techniques that are used for popular NLP applications and tasks. We conclude by outlining current challenges and directions for future research. Overall, our paper aims to clarify the landscape of existing literature in data augmentation for NLP and motivate additional work in this area. We also present a GitHub repository with a paper list that will be continuously updated at https://github.com/styfeng/DataAug4NLP

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