We invite you to participate in the following shared tasks at Touché 2026 held in conjunction with the CLEF conference.

1. Fallacy Detection. Given an argument, determine whether it is fallacious and what type of fallacy it is. https://touche.webis.de/clef26/touche26-web/fallacy-detection.html

2. Causality Extraction. Given a text, determine whether it contains causal information, identify the information in the text, and classify the expressed relationship. https://touche.webis.de/clef26/touche26-web/causality-extraction.html

3. Generalizability of Argument Identification in Context. Given a sentence from some argumentation dataset, determine whether the sentence was annotated as argument (using annotator guidelines etc.). https://touche.webis.de/clef26/touche26-web/generalizable-argument-mining.ht...

4. Advertisement in Retrieval-Augmented Generation (RAG). Given a query and response of an RAG system, determine whether the response contains an ad, identify the ad in the response, and remove the ad. https://touche.webis.de/clef25/touche25-web/advertisement-detection.html

Find out more at https://touche.webis.de/clef26/touche26-web/ and join our mailing list at https://groups.google.com/g/touche-lab for staying up to date.

Awards -------------------------- The best submission for each task will receive an award. In addition, our partners at Methods Hub (https://methodshub.gesis.org/) have agreed to provide priority support to the award-winning teams in developing their submissions into fully reusable software packages to maximize your impact.

Important Dates -------------------------- 2026-05-07: Approaches submission deadline 2026-05-28: Participant paper submission 2026-06-30: Peer review notification 2026-07-06: Camera-ready participant papers submission 2026-09 21-24: CLEF Conference in Jena and Touché Workshop

Links -------------------------- Touché: https://touche.webis.de Contact: touche@webis.de

We are looking forward to your submission! The Touché team