TY - CHAP A1 - Barrón-Cedeño, Alberto A1 - Alam, Firoj A1 - Chakraborty, Tonmoy A1 - Elsayed, Tamer A1 - Nakov, Preslav A1 - Przybyła, Piotr A1 - Struß, Julia Maria A1 - Haouari, Fatima A1 - Hasanain, Maram A1 - Ruggeri, Federico A1 - Song, Xingyi A1 - Suwaileh, Reem ED - Goharian, Nazli ED - Tonellotto, Nicola ED - He, Yulan ED - Lipani, Aldo ED - McDonald, Graham ED - Macdonald, Craig ED - Ounis, Iadh T1 - The CLEF-2024 CheckThat! Lab BT - Check-Worthiness, Subjectivity, Persuasion, Roles, Authorities, and Adversarial Robustness T2 - Advances in Information Retrieval N2 - The first five editions of the CheckThat! lab focused on the main tasks of the information verification pipeline: check-worthiness, evidence retrieval and pairing, and verification. Since the 2023 edition, it has been focusing on new problems that can support the research and decision making during the verification process. In this new edition, we focus on new problems and -for the first time- we propose six tasks in fifteen languages (Arabic, Bulgarian, English, Dutch, French, Georgian, German, Greek, Italian, Polish, Portuguese, Russian, Slovene, Spanish, and code-mixed Hindi-English): Task 1 estimation of check-worthiness (the only task that has been present in all CheckThat! editions), Task 2 identification of subjectivity (a follow up of CheckThat! 2023 edition), Task 3 identification of persuasion (a follow up of SemEval 2023), Task 4 detection of hero, villain, and victim from memes (a follow up of CONSTRAINT 2022), Task 5 Rumor Verification using Evidence from Authorities (a first), and Task 6 robustness of credibility assessment with adversarial examples (a first). These tasks represent challenging classification and retrieval problems at the document and at the span level, including multilingual and multimodal settings. KW - Desinformation KW - Subjektivität KW - Bias KW - Faktizität Y1 - 2024 SN - 978-3-031-56069-9 U6 - https://doi.org/10.1007/978-3-031-56069-9_62 SN - 0302-9743 SP - 449 EP - 458 PB - Springer International Publishing CY - Cham ER -