Text Augmentation in a Multi-Task View (2021.eacl-main)

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Challenge: a multi-task view of data augmentation allows for a more robust performance than traditional augmentation.
Approach: They propose a multi-task view of data augmentation where original and augmented samples are weighted substantively during training.
Outcome: The proposed model improves on three benchmark text classification datasets.

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Challenge: Existing approaches to generating additional parallel sentences are aimed at expanding the support of the empirical data distribution by generating new sentence pairs that contain infrequent words.
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Challenge: Meta-Learning requires a large number of training tasks to learn representations that transfer well to unseen tasks.
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Data Augmentation for Text Generation Without Any Augmented Data (2021.acl-long)

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Challenge: Existing methods for data augmentation need to define or choose proper data mapping functions to create augmented samples.
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MetaWeighting: Learning to Weight Tasks in Multi-Task Learning (2022.findings-acl)

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Challenge: Existing task weighting methods assign weights only based on training losses, while ignoring the gap between the training loss and generalization loss.
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Challenge: Existing methods for text data augmentation are limited to simple tasks and weak baselines.
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Empowering Large Language Models for Textual Data Augmentation (2024.findings-acl)

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Challenge: True. True. False
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Rethinking Data Augmentation in Text-to-text Paradigm (2022.coling-1)

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Challenge: Existing approaches to augment training data are limited or marginal, or even diminishing or adverse especially given original training corpus is relatively sufficient or the backbone classifiers are PLM based.
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Text AutoAugment: Learning Compositional Augmentation Policy for Text Classification (2021.emnlp-main)

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Challenge: Data augmentation aims to alleviate the overfitting issue in low-resource or class-imbalanced situations.
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