Benchmarking the Generation of Fact Checking Explanations
Fighting misinformation is a challenging, yet crucial, task. Despite the growing number of experts being involved in manual fact-checking, this activity is time-consuming and cannot keep up with the ever-increasing amount of fake news produced daily. Hence, automating this process is necessary to he...
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Published in | Transactions of the Association for Computational Linguistics Vol. 11; pp. 1250 - 1264 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
One Broadway, 12th Floor, Cambridge, Massachusetts 02142, USA
MIT Press
20.10.2023
MIT Press Journals, The |
Subjects | |
Online Access | Get full text |
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Summary: | Fighting misinformation is a challenging, yet crucial, task. Despite the growing number of experts being involved in manual fact-checking, this activity is time-consuming and cannot keep up with the ever-increasing amount of fake news produced daily. Hence, automating this process is necessary to help curb misinformation. Thus far, researchers have mainly focused on claim veracity classification. In this paper, instead, we address the generation of justifications (textual explanation of
a claim is classified as either true or false) and benchmark it with novel datasets and advanced baselines. In particular, we focus on summarization approaches over unstructured knowledge (i.e., news articles) and we experiment with several extractive and abstractive strategies. We employed two datasets with different styles and structures, in order to assess the generalizability of our findings. Results show that in justification production summarization benefits from the claim information, and, in particular, that a claim-driven extractive step improves abstractive summarization performances. Finally, we show that although cross-dataset experiments suffer from performance degradation, a unique model trained on a combination of the two datasets is able to retain style information in an efficient manner. |
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Bibliography: | 2023 |
ISSN: | 2307-387X 2307-387X |
DOI: | 10.1162/tacl_a_00601 |