TNT: Text Normalization based Pre-training of Transformers for Content Moderation

Fei Tan, Yifan Hu, Changwei Hu, Keqian Li, Kevin Yen


Abstract
In this work, we present a new language pre-training model TNT (Text Normalization based pre-training of Transformers) for content moderation. Inspired by the masking strategy and text normalization, TNT is developed to learn language representation by training transformers to reconstruct text from four operation types typically seen in text manipulation: substitution, transposition, deletion, and insertion. Furthermore, the normalization involves the prediction of both operation types and token labels, enabling TNT to learn from more challenging tasks than the standard task of masked word recovery. As a result, the experiments demonstrate that TNT outperforms strong baselines on the hate speech classification task. Additional text normalization experiments and case studies show that TNT is a new potential approach to misspelling correction.
Anthology ID:
2020.emnlp-main.383
Volume:
Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)
Month:
November
Year:
2020
Address:
Online
Editors:
Bonnie Webber, Trevor Cohn, Yulan He, Yang Liu
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4735–4741
Language:
URL:
https://aclanthology.org/2020.emnlp-main.383
DOI:
10.18653/v1/2020.emnlp-main.383
Bibkey:
Cite (ACL):
Fei Tan, Yifan Hu, Changwei Hu, Keqian Li, and Kevin Yen. 2020. TNT: Text Normalization based Pre-training of Transformers for Content Moderation. In Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), pages 4735–4741, Online. Association for Computational Linguistics.
Cite (Informal):
TNT: Text Normalization based Pre-training of Transformers for Content Moderation (Tan et al., EMNLP 2020)
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PDF:
https://aclanthology.org/2020.emnlp-main.383.pdf
Video:
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