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= WikiTrust: Real-time text trust analysis for wikis! = '''WikiTrust''' implements an author reputation system, and a text trust system, for wikis. WikiTrust adds to a wiki a '''trust tab''' that enables any visitor to check the reliability of wiki text, and easily spot spam, surreptitious changes, and information tampering. * '''[http://wiki-trust.cse.ucsc.edu/ The Wikipedia, colored by WikiTrust].''' This is a 2007 snapshot of the Wikipedia, and it is not interactive; author information and text origin are also missing. Nevertheless, this gives you a good idea of how the system performs on a large wiki. * '''[http://redherring.cse.ucsc.edu/WikiTrust Demo of WikiTrust, on what will become the new WikiTrust wiki!]''' * '''[http://www.cookiwiki.org/ CookiWiki]''' - a wiki on cooking! WikiTrust can be installed as a [http://www.mediawiki.org MediaWiki] extension; it can be deployed on a new wiki, or on a wiki with existing content. The tool analyzes edits in real-time, as they are entered by users, and it computes author reputation, text trust, and text origin: * '''Text author:''' WikiTrust computes the author of every word of text, using an algorithm that is robust to cut-and-pase, delete-and-reinsert, and most type of attacks (we claim, all attacks -- try your hand at it and let us know!). If you click on the '''check text''' tab, when the mouse pointer hovers over a word, the author of the word is displayed in a small pop-up next to the word. * '''Text origin:''' WikiTrust keeps track of the revision in which every word was inserted. In the ''check text'' tab, clicking on a word redirects to the diff showing the the edit where the word was introduced. You can examine the edit, as well as access information on the author of the edit. As for author tracking, WikiTrust uses algorithms that are robust to attacks. * '''Author reputation''' is computed from content evolution: authors who provide lasting contributions gain reputation, while authors whose contributions are reverted in short order lose reputation. Thus, the reputation system provides an incentive towards constructive behavior. * '''Text trust:''' The trust of a portion of text is computed according to the reputation of its author, as well as the reputation of all users who have subsequently revised the text and the article where the text appears. Text trust is displayed via text background colors in the ''check text'' tab: the background is white for high-trust text, and shades of orange that are the stronger, the lower the text trust. The tool has two main modes of operation: * '''[:WikiTrust Online Mode:The online mode]''' is what you need if you want to add a ''trust'' tab to your wiki, and make information on text trust available to all visitors. The tool analyzes edits, and displays trust information, in real-time; it can be deployed both on new, and existing, wikis. The tool can be installed as a [http://www.mediawiki.org MediaWiki] extension. * '''[:WikiTrust Batch Mode:The batch mode]''' is what you need to perform batch statistical and trust/reputation analysis of wiki dump files. == Getting the Code == The code of WikiTrust is released as open source. The core of the code is released under the BSD license; some [http://www.mediawiki.org Mediawiki] plugins are distributed under the GPL. Here are detailed instructions on ["Contributing to WikiTrust"], for people who are interested in developing it. There are two ways to download WikiTrust: * '''[http://code.google.com/p/wikitrust/downloads/list Download a tarball.]''' * '''[:WikiTrust via Git: Download Wikitrust using Git.]''' This makes it easy to update to the last version of the code. The ["WikiTrust Release History"] summarizes the changes across releases. Please look at the README file in the wikitrust directory for installation instructions; we prefer to keep the installation instructions in README files, rather than in a wiki, to ensure that they stay in synch with the code. == People == [http://www.soe.ucsc.edu/~luca Luca de Alfaro], [http://www.soe.ucsc.edu/~ipye Ian Pye], [http://www.soe.ucsc.edu/~thumper Bo Adler], Chrishnendu Chatterjee. == Resources == * The ["WikiTrust Blog"] contains the latest news. * [http://code.google.com/p/wikitrust/issues/list Bug tracking system]: here you can view or submit bugs. * [http://groups.google.com/group/wikitrust WikiTrust discussion group], where you can discuss the tool and its code, and give us feedback and suggestions. Subscribe to this list if you want to be notified of new releases. == Author Reputation and Text Trust == [[Include(Trust_Computation)]] [[Include(Publications_and_Talks)]] |
The main page for [http://wikitrust.soe.ucsc.edu/ WikiTrust] has moved, please follow [http://wikitrust.soe.ucsc.edu/ this link]. |