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Computing trust from revision history
Abstract A new model of distributed, collaborative A new model of distributed, collaborative information evolution is emerging. As exemplified in Wikipedia, online collaborative information repositories are being generated, updated, and maintained by a large and diverse community of users. Issues concerning trust arise when content is generated and updated by diverse populations. Since these information repositories are constantly under revision, trust determination is not simply a static process. In this paper, we explore ways of utilizing the revision history of an article to assess the trustworthiness of the article. We then present an experiment where we used this revision history-based trust model to assess the trustworthiness of a chain of successive versions of articles in Wikipedia and evaluated the assessments produced by the model.ted the assessments produced by the model.
Added by wikilit team Added on initial load  +
Collected data time dimension Cross-sectional  +
Comments WIkipedia is generally trustworthy and visWIkipedia is generally trustworthy and visualization of the computed trust values may give users the option to view the most trustworthy version of an article, which can improve Wikipedia’s quality control process; by providing timely notifications of vandalism and other forms of malicious content modifications. forms of malicious content modifications.
Conclusion We introduced the concept of revision histWe introduced the concept of revision historybased trust and developed a dynamic Bayesian network trust model that utilized rich revision information in Wikipedia. Our experiments showed promising results, even though we made several simplifying assumptions in this work. We showed an evaluation method inWikipedia based on its feature articles, clean-up articles and the levels of author editing privileges. Our work provided a methodology for comparing and evaluating future computational trust algorithms. Based on our DBN model, we believe the reasons for Wikipedia being generally trustworthy are: (1) most Wikipedia authors seem to have good intentions (there are only 1:3% blocked authors); (2) Wikipedia administrators have the responsibility and authority to settle disputes, prevent vandalism, and block inappropriate authors. While there are a small number of administrators (0:09%), they have made much larger contributions to Wikipedia, for example, 29:4% revisions of featured articles were made by administrators in our experiments, according to Table 1; (3) Wikipedia maintains a complete revision history of articles from which a previous content modification can be easily reverted. The benefits of revision trust to Wikipedia users are significant. Visualization of the computed trust values may help users to decide what information they should trust. Users may also have the option to view the most trustworthy version of an article, in addition to the most recent one. Furthermore, revision trust can improve Wikipedia’s quality control process; for example, our model provides an appealing approach to monitoring changes in trustworthiness and thereby providing timely notifications of vandalism and other forms of malicious content modifications. forms of malicious content modifications.
Data source Experiment responses  + , Wikipedia pages  +
Doi 10.1145/1501434.1501445 +
Google scholar url http://scholar.google.com/scholar?ie=UTF-8&q=%22Computing%2Btrust%2Bfrom%2Brevision%2Bhistory%22  +
Has author Honglei Zeng + , Maher A. Alhossaini + , Li Ding + , Richard Fikes + , Deborah L. McGuinness +
Has domain Computer science +
Has topic Featured articles + , Vandalism + , Reader perceptions of credibility + , Computational estimation of trustworthiness +
Peer reviewed Yes  +
Publication type Conference paper  +
Published in Proceedings of the 2006 International Conference on Privacy, Security and Trust: Bridge the Gap Between PST Technologies and Business Services +
Research design Experiment  +
Research questions In the work reported in this paper, we haIn the work reported in this paper, we have explored the hypothesis that revision information can be used to compute a 1www.wikipedia.com measure of trustworthiness of revised documents. Based on that hypothesis, we developed a revision history-based trust model for computing and tracking the trustworthiness of the documents in collaborative information repositories. We represent our trust model in a dynamic Bayesian network (DBN) because a DBN is a powerful framework for modeling processes that evolve dynamically over time, which in our case, are ever changing articles.h in our case, are ever changing articles.
Revid 10,710  +
Theories Undetermined
Theory type Design and action  +
Title Computing trust from revision history
Unit of analysis Article  +
Url http://dl.acm.org/citation.cfm?id=1501445  +
Wikipedia coverage Main topic  +
Wikipedia data extraction Dump  +
Wikipedia language English  +
Wikipedia page type Article  +
Year 2006  +
Creation dateThis property is a special property in this wiki. 15 March 2012 20:25:37  +
Categories Featured articles  + , Vandalism  + , Reader perceptions of credibility  + , Computational estimation of trustworthiness  + , Computer science  + , Publications  +
Modification dateThis property is a special property in this wiki. 30 January 2014 20:21:56  +
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