SAT: Improving Semi-Supervised Text Classification with Simple Instance-Adaptive Self-Training

Hui Chen, Wei Han, Soujanya Poria


Abstract
Self-training methods have been explored in recent years and have exhibited great performance in improving semi-supervised learning. This work presents a simple instance-adaptive self-training method (SAT) for semi-supervised text classification. SAT first generates two augmented views for each unlabeled data, and then trains a meta learner to automatically identify the relative strength of augmentations based on the similarity between the original view and the augmented views. The weakly-augmented view is fed to the model to produce a pseudo-label and the strongly-augmented view is used to train the model to predict the same pseudo-label. We conducted extensive experiments and analyses on three text classification datasets and found that with varying sizes of labeled training data, SAT consistently shows competitive performance compared to existing semi-supervised learning methods.
Anthology ID:
2022.findings-emnlp.456
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2022
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates
Editors:
Yoav Goldberg, Zornitsa Kozareva, Yue Zhang
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
6141–6146
Language:
URL:
https://aclanthology.org/2022.findings-emnlp.456
DOI:
10.18653/v1/2022.findings-emnlp.456
Bibkey:
Cite (ACL):
Hui Chen, Wei Han, and Soujanya Poria. 2022. SAT: Improving Semi-Supervised Text Classification with Simple Instance-Adaptive Self-Training. In Findings of the Association for Computational Linguistics: EMNLP 2022, pages 6141–6146, Abu Dhabi, United Arab Emirates. Association for Computational Linguistics.
Cite (Informal):
SAT: Improving Semi-Supervised Text Classification with Simple Instance-Adaptive Self-Training (Chen et al., Findings 2022)
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PDF:
https://aclanthology.org/2022.findings-emnlp.456.pdf