Consistency Training with Virtual Adversarial Discrete Perturbation

Jungsoo Park, Gyuwan Kim, Jaewoo Kang


Abstract
Consistency training regularizes a model by enforcing predictions of original and perturbed inputs to be similar. Previous studies have proposed various augmentation methods for the perturbation but are limited in that they are agnostic to the training model. Thus, the perturbed samples may not aid in regularization due to their ease of classification from the model. In this context, we propose an augmentation method of adding a discrete noise that would incur the highest divergence between predictions. This virtual adversarial discrete noise obtained by replacing a small portion of tokens while keeping original semantics as much as possible efficiently pushes a training model’s decision boundary. Experimental results show that our proposed method outperforms other consistency training baselines with text editing, paraphrasing, or a continuous noise on semi-supervised text classification tasks and a robustness benchmark.
Anthology ID:
2022.naacl-main.414
Volume:
Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies
Month:
July
Year:
2022
Address:
Seattle, United States
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5646–5656
Language:
URL:
https://aclanthology.org/2022.naacl-main.414
DOI:
10.18653/v1/2022.naacl-main.414
Bibkey:
Cite (ACL):
Jungsoo Park, Gyuwan Kim, and Jaewoo Kang. 2022. Consistency Training with Virtual Adversarial Discrete Perturbation. In Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, pages 5646–5656, Seattle, United States. Association for Computational Linguistics.
Cite (Informal):
Consistency Training with Virtual Adversarial Discrete Perturbation (Park et al., NAACL 2022)
Copy Citation:
PDF:
https://aclanthology.org/2022.naacl-main.414.pdf
Software:
 2022.naacl-main.414.software.zip
Code
 clovaai/vat-d
Data
AG NewsANLIFEVERMultiNLISNLI