Get Your Vitamin C! Robust Fact Verification with Contrastive Evidence
Open accessAbstract
Typical fact verification models use retrieved written evidence to verify claims.Evidence sources, however, often change over time as more information is gathered and revised.In order to adapt, models must be sensitive to subtle differences in supporting evidence.We present VITAMINC, a benchmark infused with challenging cases that require fact verification models to discern and adjust to slight factual changes.We collect over 100,000 Wikipedia revisions that modify an underlying fact, and leverage these revisions, together with additional synthetically constructed ones, to create a total of over 400,000 claim-evidence pairs.Unlike previous resources, the examples in VITAMINC are contrastive, i.e., they contain evidence pairs that are nearly identical in language and content, with the exception that one supports a given claim while the other does not.We show that training using this design increases robustness-improving accuracy by 10% on adversarial fact verification and 6% on adversarial natural language inference (NLI).Moreover, the structure of VITAMINC leads us to define additional tasks for fact-checking resources: tagging relevant words in the evidence for verifying the claim, identifying factual revisions, and providing automatic edits via factually consistent text generation. 1
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The approach is inspired by works on fact-checking where simple research-and-revise workflows are effective at attributing or correcting unattributed claims made by humans.
“The approach is inspired by works on fact-checking 2 where simple research-and-revise workflows are effective at attributing or correcting unattributed claims made by humans (Thorne et al., 2018;Schuster et al., 2021;Thorne and Vlachos, 2021).”
From RARR: Researching and revising what language models say, using language models (2023) · cites this paper as Schuster et al., 2021
Section 4.1 (page unavailable) says Wikipedia users verify and correct others’ revisions, and §3.1 describes collecting factual edits. The paper does not establish that simple research-and-revise workflows are effective, or address attributing previously unattributed human claims. (LLM, conf=0.82)
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- Authors
- Schuster, T., Fisch, A., & Barzilay, R.
- Affiliations
- MIT Computer Science and Artificial Intelligence Laboratory (US)
- Venue
- Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies
- Published
- 2021
- Pages
- 624-643
- OpenAlex
- W3136303386
- Cited by
- 126
- References
- 31
- Citations by year
- 2026: 11 · 2025: 16 · 2024: 19 · 2023: 42 · 2022: 25 · 2021: 12 · 2020: 1
- FWCI
- 65.32
- Type
- conference paper
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL-HLT) (publishedVersion, cc-by)
- arXiv (Cornell University) (submittedVersion)
- DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation
- Topics
- Social Sciences › Sociology and Political Science › Misinformation and Its Impacts
- Physical Sciences › Computer Science › Artificial Intelligence › Topic Modeling
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Multimodal Machine Learning Applications
- Keywords
- fact-checking, natural language inference
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