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        <title>Claim Check-Worthiness Detection as Positive Unlabelled Learning</title>
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        <namePart type="given">Dustin</namePart>
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    <abstract>As the first step of automatic fact checking, claim check-worthiness detection is a critical component of fact checking systems. There are multiple lines of research which study this problem: check-worthiness ranking from political speeches and debates, rumour detection on Twitter, and citation needed detection from Wikipedia. To date, there has been no structured comparison of these various tasks to understand their relatedness, and no investigation into whether or not a unified approach to all of them is achievable. In this work, we illuminate a central challenge in claim check-worthiness detection underlying all of these tasks, being that they hinge upon detecting both how factual a sentence is, as well as how likely a sentence is to be believed without verification. As such, annotators only mark those instances they judge to be clear-cut check-worthy. Our best performing method is a unified approach which automatically corrects for this using a variant of positive unlabelled learning that finds instances which were incorrectly labelled as not check-worthy. In applying this, we out-perform the state of the art in two of the three tasks studied for claim check-worthiness detection in English.</abstract>
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    <identifier type="doi">10.18653/v1/2020.findings-emnlp.43</identifier>
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        <url>https://aclanthology.org/2020.findings-emnlp.43</url>
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%0 Conference Proceedings
%T Claim Check-Worthiness Detection as Positive Unlabelled Learning
%A Wright, Dustin
%A Augenstein, Isabelle
%Y Cohn, Trevor
%Y He, Yulan
%Y Liu, Yang
%S Findings of the Association for Computational Linguistics: EMNLP 2020
%D 2020
%8 November
%I Association for Computational Linguistics
%C Online
%F wright-augenstein-2020-claim
%X As the first step of automatic fact checking, claim check-worthiness detection is a critical component of fact checking systems. There are multiple lines of research which study this problem: check-worthiness ranking from political speeches and debates, rumour detection on Twitter, and citation needed detection from Wikipedia. To date, there has been no structured comparison of these various tasks to understand their relatedness, and no investigation into whether or not a unified approach to all of them is achievable. In this work, we illuminate a central challenge in claim check-worthiness detection underlying all of these tasks, being that they hinge upon detecting both how factual a sentence is, as well as how likely a sentence is to be believed without verification. As such, annotators only mark those instances they judge to be clear-cut check-worthy. Our best performing method is a unified approach which automatically corrects for this using a variant of positive unlabelled learning that finds instances which were incorrectly labelled as not check-worthy. In applying this, we out-perform the state of the art in two of the three tasks studied for claim check-worthiness detection in English.
%R 10.18653/v1/2020.findings-emnlp.43
%U https://aclanthology.org/2020.findings-emnlp.43
%U https://doi.org/10.18653/v1/2020.findings-emnlp.43
%P 476-488

Markdown (Informal)

[Claim Check-Worthiness Detection as Positive Unlabelled Learning](https://aclanthology.org/2020.findings-emnlp.43) (Wright & Augenstein, Findings 2020)

• Claim Check-Worthiness Detection as Positive Unlabelled Learning (Wright & Augenstein, Findings 2020)

ACL

• Dustin Wright and Isabelle Augenstein. 2020. Claim Check-Worthiness Detection as Positive Unlabelled Learning. In Findings of the Association for Computational Linguistics: EMNLP 2020, pages 476–488, Online. Association for Computational Linguistics.