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The CLEF-2021 CheckThat!
Subtitle
Lab on Detecting Check-Worthy Claims, Previously Fact-Checked Claims, and Fake News
Abstract
We describe the fourth edition of the CheckThat! Lab, part of the 2021 Cross-Language Evaluation Forum (CLEF). The lab evaluates technology supporting various tasks related to factuality, and it is offered in Arabic, Bulgarian, English, and Spanish. Task 1 asks to predict which tweets in a Twitter stream are worth fact-checking (focusing on COVID-19). Task 2 asks to determine whether a claim in a tweet can be verified using a set of previously fact-checked claims. Task 3 asks to predict the veracity of a target news article and its topical domain. The evaluation is carried out using mean average precision or precision at rank k for the ranking tasks, and F for the classification tasks.
Publication Type
ConferencePaper
Author
Nakov, Preslav
Da San Martino, Giovanni
Elsayed, Tamer
Barrón-Cedeño, Alberto
Míguez, Rubén
Shaar, Shaden
Alam, Firoj
Haouari, Fatima
Hasanain, Maram
Babulkov, Nikolay
Nikolov, Alex
Shahi, Gautam Kishore
Struß, Julia Maria
Editor
Hiemstra, Djoerd
Moens, Marie-Francine
Mothe, Josiane
Perego, Raffaele
Potthast, Martin
Sebastiani, Fabrizio
Date Issued
2021
Faculty
Institute / Institution
Published in
Advances in information retrieval: Proceedings - Part II
Conference
43rd European Conference on Information Retrieval, online, 28.03.-04.01.2021
Publisher
Springer
Publisher Place
Cham
Page Start
639
Page End
649
Series Name
Lecture Notes in Computer Science
Issue Number
12657
ISBN
978-3-030-72239-5
978-3-030-72240-1
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