|This article needs to be updated. (July 2014)|
An example of a WikiTrust screenshot
|Developer(s)||UCSC Online Collaboration Lab|
v2.12 / November 19, 2008 
v3.0.pre1 / August 21, 2009 
|Written in||PHP, OCaml |
|License||BSD, GPL |
WikiTrust is a software product that assesses the credibility of content and author reputation of wiki articles using an automated algorithm. WikiTrust is a plug-in for servers using the MediaWiki platform, such as Wikipedia. When installed on a MediaWiki website it is designed to enable users of that website to obtain information about the author, origin, and reliability of that website's wiki text. Content that is stable, based on an analysis of article history, should be displayed in normal black-on-white type, and content that is not stable is highlighted in varying shades of yellow or orange.
WikiTrust on Wikipedia was a project undertaken by the Online Collaboration Lab at the University of California, Santa Cruz, in response to a Wikipedia:Meta quality initiative sponsored by the Wikimedia Foundation. The project, discussed at Wikimania 2009, was one of a number of quality/rating tools for Wikipedia content that the Wikimedia Foundation was considering. Communications of the ACM (August 2011) had an article on it. WikiTrust is designed for English and German use via the Wiki-Watch pagedetails for Wikipedia articles, in several languages via a Firefox plugin or it can be installed in any MediaWiki configuration. As of 2012, WikiTrust appears to be an inactive project.
WikiTrust computes, for each word, three pieces of information:
- The author of the word.
- The revision where the word (and the immediately surrounding text) was inserted. By clicking on a word, visitors are sent to the revision where the word originated.
- The "trust" of the word, indicated by the word background coloring (orange for "untrusted" text, white for "trusted" text).
The trust of the word is computed according to how much the word, and the surrounding text, have been revised by users that WikiTrust considers of "high authority." This project is still in a beta test stage.
The criticism has been raised that "the software doesn’t really measure trustworthiness, and the danger is that people will trust the software to measure something that it does not." Generally, users whose content persists for a long time without being "reverted" by other editors are deemed more trustworthy by the software. This may mean that users who edit controversial articles subject to frequent reversion may be found to be less trustworthy than others. The software uses a variation of Levenshtein distance to measure how much of user's edit is kept or rearranged, so that users can receive "partial credit" for their work.
The software has also been described as measuring the amount of consensus in an article. The community of editors collaborate on articles and revise each other until agreement is reached. Users who make edits which are more similar to the final agreement will receive more reputation. The point is also made that consensus revolves around the beliefs of the community, so that the reputation computed is also a reflection of the community.
- WikiTrust Release History from the UCSC Online Collaboration Lab
- Browse Files for WikiTrust on GitHub
- Installation Advice from the UCSC Online Collaboration Lab
- WikiTrust on GitHub
- Main Page from the UCSC Online Collaboration Lab
- Wikipedia Considers Coloring Untested Text, an August 31, 2009 article from Information Week
- CACM 54 No. 8 Reputation Systems for Open Collaboration Luca De Alfaro, Ashutosh Kulshreshtha, Ian Pye, B. Thomas Adler pp 81-7
- Wiki-Watch.org: Wiki-Watch.org: a new tool to evaluate the quality of Wikipedia’s articles January 13, 2011.
- WikiTrust: Wikitrust.soe.ucsc.edu
- Andrew G. West (25 November 2012). "WikiTrust" Wikipedia:Village pump (technical).
- "Computing Wikipedia's Authority". ACRLog. Association of College & Research Libraries.
- See "UCSC Wiki Lab".
- "Software tests accuracy of Wikipedia entries". Canadian Broadcasting Corporation. September 6, 2007.
- B. Adler and L. de Alfaro. A Content-Driven Reputation System for the Wikipedia. In WWW 2007, Proceedings of the 16th International World Wide Web Conference, ACM Press, 2007.
- Wikipedia to Color Code Untrustworthy Text, an August 30, 2009 article from Wired News