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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence / EAAI-20

Combining Fact Extraction and Verification with Neural Semantic Matching Networks

February 1, 2023

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Authors

Yixin Nie

University of North Carolina at Chapel Hill


Haonan Chen

University of North Carolina at Chapel Hill


Mohit Bansal

University of North Carolina at Chapel Hill


DOI:

10.1609/aaai.v33i01.33016859


Abstract:

The increasing concern with misinformation has stimulated research efforts on automatic fact checking. The recentlyreleased FEVER dataset introduced a benchmark factverification task in which a system is asked to verify a claim using evidential sentences from Wikipedia documents. In this paper, we present a connected system consisting of three homogeneous neural semantic matching models that conduct document retrieval, sentence selection, and claim verification jointly for fact extraction and verification. For evidence retrieval (document retrieval and sentence selection), unlike traditional vector space IR models in which queries and sources are matched in some pre-designed term vector space, we develop neural models to perform deep semantic matching from raw textual input, assuming no intermediate term representation and no access to structured external knowledge bases. We also show that Pageview frequency can also help improve the performance of evidence retrieval results, that later can be matched by using our neural semantic matching network. For claim verification, unlike previous approaches that simply feed upstream retrieved evidence and the claim to a natural language inference (NLI) model, we further enhance the NLI model by providing it with internal semantic relatedness scores (hence integrating it with the evidence retrieval modules) and ontological WordNet features. Experiments on the FEVER dataset indicate that (1) our neural semantic matching method outperforms popular TF-IDF and encoder models, by significant margins on all evidence retrieval metrics, (2) the additional relatedness score and WordNet features improve the NLI model via better semantic awareness, and (3) by formalizing all three subtasks as a similar semantic matching problem and improving on all three stages, the complete model is able to achieve the state-of-the-art results on the FEVER test set (two times greater than baseline results).1

Topics: AAAI

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HOW TO CITE:

Yixin Nie||Haonan Chen||Mohit Bansal Combining Fact Extraction and Verification with Neural Semantic Matching Networks Proceedings of the AAAI Conference on Artificial Intelligence (2019) 6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal Combining Fact Extraction and Verification with Neural Semantic Matching Networks AAAI 2019, 6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal (2019). Combining Fact Extraction and Verification with Neural Semantic Matching Networks. Proceedings of the AAAI Conference on Artificial Intelligence, 6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal. Combining Fact Extraction and Verification with Neural Semantic Matching Networks. Proceedings of the AAAI Conference on Artificial Intelligence 2019 p.6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal. 2019. Combining Fact Extraction and Verification with Neural Semantic Matching Networks. "Proceedings of the AAAI Conference on Artificial Intelligence". 6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal. (2019) "Combining Fact Extraction and Verification with Neural Semantic Matching Networks", Proceedings of the AAAI Conference on Artificial Intelligence, p.6859-6866

Yixin Nie||Haonan Chen||Mohit Bansal, "Combining Fact Extraction and Verification with Neural Semantic Matching Networks", AAAI, p.6859-6866, 2019.

Yixin Nie||Haonan Chen||Mohit Bansal. "Combining Fact Extraction and Verification with Neural Semantic Matching Networks". Proceedings of the AAAI Conference on Artificial Intelligence, 2019, p.6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal. "Combining Fact Extraction and Verification with Neural Semantic Matching Networks". Proceedings of the AAAI Conference on Artificial Intelligence, (2019): 6859-6866.

Yixin Nie||Haonan Chen||Mohit Bansal. Combining Fact Extraction and Verification with Neural Semantic Matching Networks. AAAI[Internet]. 2019[cited 2023]; 6859-6866.


ISSN: 2374-3468


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