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This page is part of the Proceedings of Wikimania 2007 (Index of presentations)

A Content-Driven Reputation System for the Wikipedia

Authors Luca De Alfaro (University of California, Santa Cruz, USA), Thomas Adler (University of California, Santa Cruz, USA)
Track Wikimedia Community
License Heckert GNU.png GNU Free Documentation License (details)
About the authors
Luca de Alfaro
Luca de Alfaro is an associate professor of Computer Engineering at the University of California, Santa Cruz, CA, USA. His interests include game theory, reputation systems, on-line interaction, social networks, and the Wikipedia. He is developing a reputation system for the Wikipedia.
Adler ( is a graduate student in the Computer Science Department of the University of California, Santa Cruz, CA, USA. His interests include game theory, software design, and the Wikipedia.
We present a content-driven reputation system for Wikipedia authors: authors gain reputation when their contributions are long-lived, and they lose reputation when their contributions are undone in short order. We have evaluated such a reputation system on the Italian and French Wikipedias: our data shows that author reputation is a good predictor for the quality of future edits by the author. The reputation could be used to flag out recent text from low-reputation authors, thus providing an automated notion of text trust. The reputation could also be used to grant edit access to controversial pages.
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