Details

Autor(en) / Beteiligte

• Mansour, Watheq
• Elsayed, Tamer
• Al-Ali, Abdulaziz

Titel

This is not new! Spotting previously-verified claims over Twitter

Ist Teil von

• Information processing & management, 2023-07, Vol.60 (4), p.103414, Article 103414

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Several fake claims are commonly repeated over time, especially on social media. To identify such previous claims, the verified claim retrieval task was studied, where, for a given input claim, the goal is to find previously-verified claims that are relevant to it. However, this view assumes that each claim was already verified, which may not be true for all claims in the real-world scenario. In this work, we introduce the Verified Claim Checking problem over Twitter, in which the relevant verified claims are retrieved only if the input claim was indeed previously-verified, thus saving computation time. We address the problem by proposing SpotVC, an end-to-end approach consisting of two stages, namely a filter and a reranker. The proposed filter achieved an average F1 of 0.81 while significantly reducing computation time. Moreover, the proposed reranker outperformed the state-of-the-art models on two public datasets and provided on-par performance on a third one. Overall, our proposed system exhibits an effective operational balance in the trade-off between efficiency and effectiveness for the real-world scenario. •We are the first to introduce the Verified Claim Checking problem.•We propose an effective and efficient system to address a real-world problem.•The filtering phase of our system significantly saves unnecessary computation time.•Our simple reranking phase outperforms the state of the art on two public datasets.