Wikimania 2025

mathias schindler

I joined Wikipedia as an author in 2002/2003. I co-founded Wikimedia Germany in 2004, I served on the board of Wikimedia Germany for a few years and I worked for Wikimedia Germany as a full time employee from 2009 to 2014.

I worked at the German National Library, the European Parliament, the German federal Parliament, a Berlin-based NGO on human rights and civil liberties and I recently started working in the policy team of a company.

My last Wikimania was London, it feels like ages ago.


Sessions

08-06
15:45
25min
Undeclared AI-generated text in Wikipedia: A tale of caution
mathias schindler

🎥 Session recording: https://youtu.be/Dw9o8Lsl974?t=15910 🎥

This lecture explores the emerging challenge of undeclared AI-generated content in Wikipedia. As large language models such as ChatGPT trained on Wikipedia increasingly contribute content back to the platform, we face critical questions about information integrity. The session examines how this practice undermines Wikipedia's reliability and the various motivations that drive such contributions. Through real-world examples and technical analysis, we'll discuss detection methodologies and policy implications. The presentation aims to foster dialogue about necessary disclosure standards and verification methods to maintain Wikipedia's reliability as a knowledge source in an era where distinguishing between human and machine-written content becomes increasingly difficult.

Technology
MOMBASA (🗣️ ar, es, fr, sw)
08-08
17:15
90min
Reflection on 20 years of Wikimania
Andrew Lih, Phoebe Ayers, Lodewijk, Notafish, SJ, Gnangarra, Patricio.lorente, mathias schindler, ProtoplasmaKid, Asaf Bartov, Iolanda Pensa - iopensa, eric luth, islahaddow, Butch Bustria, SGrabarczuk (WMF), Bobbyshabangu, Nina

Reflecting on 20 years of Wikimania with some organizers from many different years!

Village Pump (remote only)
Village Pump (remote only)