DEAR: Disentangled Event-Agnostic Representation Learning for Early Fake News Detection

Xiao Pu, Hao Wu, Xiuli Bi, Yu Wu, Xinbo Gao


Abstract
Detecting fake news early is challenging due to the absence of labeled articles for emerging events in training data. To address this, we propose a Disentangled Event-Agnostic Representation (DEAR) learning approach. Our method begins with a BERT-based adaptive multi-grained semantic encoder that captures hierarchical and comprehensive textual representations of the input news content. To effectively separate latent authenticity-related and event-specific knowledge within the news content, we employ a disentanglement architecture. To further enhance the decoupling effect, we introduce a cross-perturbation mechanism that perturbs authenticity-related representation with the event-specific one, and vice versa, deriving a robust and discerning authenticity-related signal. Additionally, we implement a refinement learning scheme to minimize potential interactions between two decoupled representations, ensuring that the authenticity signal remains strong and unaffected by event-specific details. Experimental results demonstrate that our approach effectively mitigates the impact of event-specific influence, outperforming state-of-the-art methods. In particular, it achieves a 6.0% improvement in accuracy on the PHEME dataset over MDDA, a similar approach that decouples latent content and style knowledge, in scenarios involving articles from unseen events different from the topics of the training set.
Anthology ID:
2025.tacl-1.16
Volume:
Transactions of the Association for Computational Linguistics, Volume 13
Month:
Year:
2025
Address:
Cambridge, MA
Venue:
TACL
SIG:
Publisher:
MIT Press
Note:
Pages:
343–356
Language:
URL:
https://preview.aclanthology.org/corrections-2025-07/2025.tacl-1.16/
DOI:
10.1162/tacl_a_00743
Bibkey:
Cite (ACL):
Xiao Pu, Hao Wu, Xiuli Bi, Yu Wu, and Xinbo Gao. 2025. DEAR: Disentangled Event-Agnostic Representation Learning for Early Fake News Detection. Transactions of the Association for Computational Linguistics, 13:343–356.
Cite (Informal):
DEAR: Disentangled Event-Agnostic Representation Learning for Early Fake News Detection (Pu et al., TACL 2025)
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PDF:
https://preview.aclanthology.org/corrections-2025-07/2025.tacl-1.16.pdf