(apologies for cross-posting) Dear colleague,
We invite you to participate in the 2025 edition of the CheckThat! Lab at CLEF 2025. This year, we feature four tasks ---one follow-up and three new--- that correspond to important components within and around the full fact-checking pipeline in multiple languages: Task 1 Subjectivity in news articles. to spot text that should be processed with specific strategies; benefiting the fact-checking pipeline. Available in Arabic, English, Bulgarian, German, Italian, and Multilingual. Task 2 Claim Normalization. to simplify the primary claim made in the social media post into a concise form. This task is offered in 20 languages: English, Arabic, Bengali, Czech, German, Greek, French, Hindi, Korean, Marathi, Indonesian, Dutch, Punjabi, Polish, Portuguese, Romanian, Spanish, Tamil, Telugu, Thai. Task 3 Fact-Checking Numerical Claims. to verify claims with numerical quantities and temporal expressions. Available in Arabic, English and Spanish. Task 4 Scientific Web Discourse Processing (SciWeb). to (a) classify different forms of science-related online discourse and (b) retrieve the scientific paper that serves as the source for the claim from a given pool of candidate scientific papers. Available in English. Register and participate: https://clef2025-labs-registration.dei.unipd.it/registrationForm.php Further information: https://checkthat.gitlab.io/ Datasets: https://gitlab.com/checkthat_lab/clef2025-checkthat-lab Important Dates --------------------- - November 2024: Lab registration opens - December 2024: Release of the training materials - 25 April 2025: Lab registration closes - 30 April 2025: Beginning of the evaluation cycle (test sets release) - 10 May 2025 (23:59 AOE): End of the evaluation cycle (run submission) - 30 May 2025: Deadline for the submission of working notes [CEUR-WS] - 30 May – 27 June 2025: Review process of participant papers - 9 June 2025: Submission of Condensed Lab Overviews [LNCS] - 16 June 2025: Notification of Acceptance for Condensed Lab Overviews [LNCS] - 23 June 2025: Camera Ready Copy of Condensed Lab Overviews [LNCS] due - 27 June 2025: Notification of Acceptance for Participant Papers [CEUR-WS] - 7 July 2025: Camera Ready Copy of Participant Papers and Extended Lab Overviews [CEUR-WS] due - 21-25 July 2025: CEUR-WS Working Notes Preview for Checking by Authors and Lab Organizers - 9-12 September 2025: CLEF 2025 Conference in Madrid, Spain Best regards, The CLEF-2025 CheckThat! Lab Shared Task Organizers ---- Wajdi Zaghouani, Ph.D. Associate Professor, Communication Program Northwestern Qatar | Education City T +974 4454 5232 | M +974 3345 4992
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