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2019 | OriginalPaper | Buchkapitel

ClaimsKG: A Knowledge Graph of Fact-Checked Claims

verfasst von : Andon Tchechmedjiev, Pavlos Fafalios, Katarina Boland, Malo Gasquet, Matthäus Zloch, Benjamin Zapilko, Stefan Dietze, Konstantin Todorov

Erschienen in: The Semantic Web – ISWC 2019

Verlag: Springer International Publishing

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Abstract

Various research areas at the intersection of computer and social sciences require a ground truth of contextualized claims labelled with their truth values in order to facilitate supervision, validation or reproducibility of approaches dealing, for example, with fact-checking or analysis of societal debates. So far, no reasonably large, up-to-date and queryable corpus of structured information about claims and related metadata is publicly available. In an attempt to fill this gap, we introduce ClaimsKG, a knowledge graph of fact-checked claims, which facilitates structured queries about their truth values, authors, dates, journalistic reviews and other kinds of metadata. ClaimsKG is generated through a semi-automated pipeline, which harvests data from popular fact-checking websites on a regular basis, annotates claims with related entities from DBpedia, and lifts the data to RDF using an RDF/S model that makes use of established vocabularies. In order to harmonise data originating from diverse fact-checking sites, we introduce normalised ratings as well as a simple claims coreference resolution strategy. The current knowledge graph, extensible to new information, consists of 28,383 claims published since 1996, amounting to 6,606,032 triples.

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Titel: ClaimsKG: A Knowledge Graph of Fact-Checked Claims
verfasst von: Andon Tchechmedjiev
Pavlos Fafalios
Katarina Boland
Malo Gasquet
Matthäus Zloch
Benjamin Zapilko
Stefan Dietze
Konstantin Todorov
Verlag: Springer International Publishing
Buch: The Semantic Web – ISWC 2019
Print ISBN: 978-3-030-30795-0

Electronic ISBN: 978-3-030-30796-7

Copyright-Jahr: 2019
DOI: https://doi.org/10.1007/978-3-030-30796-7_20

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