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Improving Evidence Retrieval with Claim-Evidence Entailment

تحسين استرجاع الأدلة مع استلام أدلة المطالبة

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 Publication date 2021
and research's language is English
 Created by Shamra Editor




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Claim verification is challenging because it requires first to find textual evidence and then apply claim-evidence entailment to verify a claim. Previous works evaluate the entailment step based on the retrieved evidence, whereas we hypothesize that the entailment prediction can provide useful signals for evidence retrieval, in the sense that if a sentence supports or refutes a claim, the sentence must be relevant. We propose a novel model that uses the entailment score to express the relevancy. Our experiments verify that leveraging entailment prediction improves ranking multiple pieces of evidence.



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