PAN @ CLEF 2025: Shared Tasks on Authorship Analysis, Computational Ethics, and 
Originality
Call for Participation

We'd like to invite you to participate in the following shared tasks at PAN 
2025 held in conjunction with the CLEF conference in Madrid, Spain.

1. Voight-Kampff Generative AI Detection.
Subtask 1: Given a (potentially obfuscated) text, decide whether it was written 
by a human or an AI.
Subtask 2: Given a document collaboratively authored by human and AI, classify 
the extent to which the model assisted.
https://pan.webis.de/clef25/pan25-web/generated-content-analysis.html

2. Multilingual Text Detoxification.
Given a toxic piece of text, re-write it in a non-toxic way while saving the 
main content as much as possible.
https://pan.webis.de/clef25/pan25-web/text-detoxification.html

3. Multi-Author Writing Style Analysis.
Given a document, determine at which positions the author changes.
https://pan.webis.de/clef25/pan25-web/style-change-detection.html

4. Generative Plagiarism Detection.
Given a pair of documents, your task is to identify all contiguous 
maximal-length passages of reused text between them.
https://pan.webis.de/clef25/pan25-web/generated-plagiarism-detection

Find out more at https://pan.webis.de/clef25/pan25-web


Important Dates
--------------------------
now      Training Data Released
May      23, 2025 Software submission
May      30, 2025 Participant paper submission
June     27, 2025 Peer review notification
July      07, 2025 Camera-ready participant papers submission
Sep      09-12, 2025 Conference


Links
--------------------------
PAN:     https://pan.webis.de
Contact: [email protected]

We are looking forward to your submission!
The PAN team

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