WSDMS: Debunk Fake News via Weakly Supervised Detection of Misinforming Sentences with Contextualized Social Wisdom

Ruichao Yang, Wei Gao, Jing Ma, Hongzhan Lin, Zhiwei Yang


Abstract
Fake news debunking primarily focuses on determining the truthfulness of news articles, which oversimplifies the issue as fake news often combines elements of both truth and falsehood. Thus, it becomes crucial to identify specific instances of misinformation within the articles. In this research, we investigate a novel task in the field of fake news debunking, which involves detecting sentence-level misinformation. One of the major challenges in this task is the absence of a training dataset with sentence-level annotations regarding veracity. Inspired by the Multiple Instance Learning (MIL) approach, we propose a model called Weakly Supervised Detection of Misinforming Sentences (WSDMS). This model only requires bag-level labels for training but is capable of inferring both sentence-level misinformation and article-level veracity, aided by relevant social media conversations that are attentively contextualized with news sentences. We evaluate WSDMS on three real-world benchmarks and demonstrate that it outperforms existing state-of-the-art baselines in debunking fake news at both the sentence and article levels.
Anthology ID:
2023.emnlp-main.94
Volume:
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing
Month:
December
Year:
2023
Address:
Singapore
Editors:
Houda Bouamor, Juan Pino, Kalika Bali
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
1525–1538
Language:
URL:
https://aclanthology.org/2023.emnlp-main.94
DOI:
10.18653/v1/2023.emnlp-main.94
Bibkey:
Cite (ACL):
Ruichao Yang, Wei Gao, Jing Ma, Hongzhan Lin, and Zhiwei Yang. 2023. WSDMS: Debunk Fake News via Weakly Supervised Detection of Misinforming Sentences with Contextualized Social Wisdom. In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, pages 1525–1538, Singapore. Association for Computational Linguistics.
Cite (Informal):
WSDMS: Debunk Fake News via Weakly Supervised Detection of Misinforming Sentences with Contextualized Social Wisdom (Yang et al., EMNLP 2023)
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PDF:
https://aclanthology.org/2023.emnlp-main.94.pdf
Video:
 https://aclanthology.org/2023.emnlp-main.94.mp4