A WikiProject, or Wikiproject, is the organization of a group of participants in a wiki established in order to achieve specific editing goals, or to achieve goals relating to a specific field of knowledge.[1][2][3] WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration.

On Wikipedia

Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For example, in 2014 the Cochrane Collaboration announced that it had entered into a partnership with Wikipedia's WikiProject Medicine, "to support sharing relevant Cochrane Evidence in Wikipedia’s health articles and to develop strategies to keep Wikipedia’s health-related content up to date, unbiased, and of high quality."[4]

Wikipedia has thousands of WikiProjects, primarily divided between specific topical areas and performing specific maintenance tasks.[1][3] One task commonly performed by topical WikiProjects in Wikipedia is the assessment of the quality of articles that fall within that topic area.[5] In Wikipedia and sister projects, WikiProject pages are located in project space,[1] and the meta information regarding the association between the article and the WikiProject is usually included on the talk page of the article.[5] WikiProjects provide an additional avenue for engagement between editors with similar interests, and have thereby been found to increase the productivity of such editors.[2] In order to spur participation and concentrate effectiveness, WikiProjects in Wikipedia may engage in activities like having a "collaboration of the week",[6] or designating one article to be improved to the point of achieving "featured" status.[7] The WikiProject Council is a group of editors that assists with the development of active WikiProjects, and acts as a central point for inter-WikiProject discussion and collaboration.

A 2008 academic study of Wikipedia concluded that participation in WikiProjects substantially improved the chances of an editor becoming an administrator, finding that one Wikipedia policy edit or WikiProject edit is worth ten article edits,[8] and concluding:

Merely performing a lot of production work is insufficient for "promotion" in Wikipedia. Candidates’ article edits were

weak predictors of success. They also have to demonstrate more managerial behavior. Diverse experience and contributions to the development of policies and WikiProjects were stronger predictors of RfA success. This is consistent with the findings that Wikipedia is a bureaucracy[9] and that coordination work has increased substantially.[10][11] [...] Participation in Wikipedia policy and WikiProjects was not predictive of adminship prior to 2006, suggesting the community as a whole is beginning to prioritize policymaking and organization experience over simple article-level coordination.

WikiProjects and assessments of article importance and quality

The English Wikipedia currently has over 2,000 WikiProjects, with varying degrees of activity.[12][13]

In 2007 the English Wikipedia introduced an assessment scale of the quality of articles.[14] Articles are rated by WikiProjects. The range of quality classes begins with "Stub" (very short pages), followed by "Start", "C" and "B" (in increasing order of quality). Community peer review is needed for the article to enter one of the highest quality classes: either "A", "good article" or the highest, "featured article". Of the about 4.4 million articles and lists assessed as of March 2015, about 7000 (0.16%) are a featured article or a featured list. One featured article per day, as selected by editors, appears on the main page of Wikipedia.[15][16]

The articles can also be rated for importance by WikiProjects. Currently, there are 5 importance categories: "low", "mid", "high", "top", and "???" for unclassified/unsure level. For a particular article, different WikiProjects may assign different importance levels.

The Wikipedia Version 1.0 Editorial Team has developed a table (shown below) that displays data of all rated articles by quality and importance, on the English Wikipedia. If an article or list receives different ratings by two or more WikiProjects, then the highest rating is used in the table and bar-chart.

Researcher Giacomo Poderi found that articles tend to reach featured status via the intensive work of a few editors.[17] A 2010 study found unevenness in quality among featured articles and concluded that the community process is ineffective in assessing the quality of articles.[18]

All rated articles by quality and importance
Quality Importance
Top High Mid Low ??? Total
FA 1,316 2,025 1,979 1,318 196 6,834
FL 148 566 626 534 117 1,991
A 263 551 733 453 98 2,098
GA 2,459 5,520 10,954 12,463 1,861 33,257
B 13,292 25,422 39,657 35,765 16,273 130,409
C 12,503 37,565 86,620 132,693 59,167 328,548
Start 18,048 82,997 343,209 1,011,651 360,164 1,816,069
Stub 4,332 32,053 248,002 2,206,570 886,757 3,377,714
List 3,665 13,439 40,720 119,796 74,573 252,193
Assessed 56,026 200,138 772,500 3,521,243 1,399,206 5,949,113
Unassessed 125 536 1,770 16,583 478,388 497,402
Total 56,151 200,674 774,270 3,537,826 1,877,594 6,446,515
  •   Featured articles
  •   Featured lists
  •   A-class articles
  •   Good articles
  •   B-class articles
  •   C-class articles
  •   Start-class articles
  •   Stub articles
  •   Lists
  •   Unassessed articles and lists


  1. Phoebe Ayers, Charles Matthews, Ben Yates, How Wikipedia Works: And how You Can be a Part of it (2008), p. 213.
  2. Robert E. Kraut, Paul Resnick, Sara Kiesler, Building Successful Online Communities (2012), p. 207, "WikiProjects are groups of editors who work together on articles within a domain, like military history, sports, or medicine".
  3. Broughton, John (2008). Wikipedia – The Missing Manual. O'Reilly Media. pp. 165–175.
  4. "Improving the quality of Wikipedia articles using Cochrane evidence". Cochrane. Retrieved November 19, 2019.
  5. Huijing Deng, Bernadetta Tarigan, Mihai Grigore, Juliana Sutanto, "Understanding the ‘Quality Motion’ of Wikipedia Articles Through Semantic Convergence Analysis", HCI in Business: Lecture Notes in Computer Science, Vol. 9191 (July 21, 2015), p. 64-75.
  6. Robert E. Kraut, Paul Resnick, Sara Kiesler, Building Successful Online Communities (2012), p. 38, "WikiProjects are groups of editors who work together on articles within a domain, like military history, sports, or medicine".
  7. Robert E. Kraut, Paul Resnick, Sara Kiesler, Building Successful Online Communities (2012), p. 85, "WikiProjects are groups of editors who work together on articles within a domain, like military history, sports, or medicine".
  8. Burke, Moira; Kraut, Robert (2008). "Taking up the mop". Proceedings of the Twenty-sixth Annual CHI Conference Extended Abstracts on Human Factors in Computing Systems - CHI '08. p. 3441. doi:10.1145/1358628.1358871. ISBN 978-1-60558-012-8.
  9. Butler, Brian; Joyce, Elisabeth; Pike, Jacqueline (2008). "Don't look now, but we've created a bureaucracy". Proceedings of the Twenty-sixth Annual CHI Conference on Human Factors in Computing Systems - CHI '08. p. 1101. doi:10.1145/1357054.1357227. ISBN 9781605580111.
  10. Kittur, Aniket; Suh, Bongwon; Pendleton, Bryan A.; and Chi, Ed H. (2007). "He says, she says: conflict and coordination in Wikipedia". Proceedings of the SIGCHI Conference on Human Factors in Computing. Association for Computing Machinery. pp. 453–462. doi:10.1145/1240624.1240698. ISBN 978-1-59593-593-9.CS1 maint: multiple names: authors list (link)
  11. Viegas, Fernanda B.; Wattenberg, Martin; Kriss, Jesse; van Ham, Frank (2007). "Talk Before You Type: Coordination in Wikipedia". 40th Annual Hawaii International Conference on System Sciences: 575–582. CiteSeerX doi:10.1109/HICSS.2007.511.
  12. Wikipedia:Wikiprojects
  13. Wikipedia:Database reports/WikiProjects by changes
  14. Wikipedia:Version 1.0 Editorial Team/Assessment
  15. "Comparing featured article groups and revision patterns correlations in Wikipedia". First Monday. Retrieved July 13, 2010.
  16. Fernanda B. Viégas; Martin Wattenberg & Matthew M. McKeon (July 22, 2007). "The Hidden Order of Wikipedia" (PDF). Visual Communication Lab, IBM Research. Retrieved October 30, 2007. Cite journal requires |journal= (help)
  17. Poderi, Giacomo, Wikipedia and the Featured Articles: How a Technological System Can Produce Best Quality Articles, Master thesis, University of Maastricht, October 2008.
  18. Lindsey, David (April 5, 2010). "Evaluating quality control of Wikipedia's featured articles". First Monday. 15 (4). Retrieved January 29, 2017.
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