*CheckThat! Lab at CLEF 2023* We invite you to participate in the 2023 edition of the CheckThat! Lab at CLEF 2023. This year, we feature five tasks ---one follow-up and four new--- that correspond to important components within and around the full fact-checking pipeline in multiple languages:
*Task 1 Check-worthiness in tweets*: This is the sixth round of the check-worthiness task. It allows us to reduce the workload of listening to social media for tweets and claims that would require the attention of a journalist. We offer two task modalities. Subtask 1A: Multimodal tweets including text and picture (for the first time!). Available in *Arabic *and English. Subtask 1B: Unimodal tweets and claims. Available in *Arabic*, English and Spanish. Subtask 1C: US political debates, text only. Available in English *Task 2 Subjectivity in news articles*: Distinguish whether a sentence from a news article expresses the subjective view of the author behind it or presents an objective view on the covered topic instead. Available in *Arabic*, Dutch, English, Italian, German, and Turkish. *Task 3 Political bias of news articles and news media:* Detect political bias of news reporting at the article and at the media level. It includes two subtasks: Subtask 3A: Given an article, classify its political leaning as left, center or right. Subtask 3B: Given the URL to a news outlet (e.g., www.cnn.com), predict the overall political bias of that news outlet as left, center or right leaning. Available in English. *Task 4 Factuality of reporting of news media:* Identify the factuality of reporting at the media level. Given the URL to a news outlet the task asks to predict the factuality of reporting of that news outlet: low, mixed, and high. Available in English. *Task 5 Authority finding on twitter: *Given a tweet stating a rumor, a model has to retrieve a ranked list of authority Twitter accounts that can help verify the rumor; i.e. they may tweet evidence that supports or denies the rumor. Available in Arabic. Further information: https://checkthat.gitlab.io/ Datasets: https://gitlab.com/checkthat_lab/clef2023-checkthat-lab Register and participate: https://clef2023-labs-registration.dei.unipd.it/registrationForm.php Important Dates --------------------- November 2022: Lab registration opens December 2022: Release of the training materials April 2023: Lab registration closes May 2023: Beginning of the evaluation cycle May 2023: End of the evaluation cycle (run submission) May 2023: Deadline for the submission of working notes June 2023: Notification of acceptance of working notes July 2023: Deadline for submission of camera-ready working notes July 2023: Preview of working notes 18-21 September: CLEF 2023 Conference in Thessaloniki, Greece *Best,* The CLEF-2023 CheckThat! Lab Shared Task Organizers ---- *Wajdi Zaghouani, Ph.D.* *Assistant Professor* College of Humanities and Social Sciences P.O. Box 34110 | Education City | Doha, Qatar tel: +974 4454 5601 | mob: +974 33454992 wzaghou...@hbku.edu.qa| Office A141, LAS Building
