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Week 4 1 Z514: Social Aspects of IT

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What is Wikipedia? Started in 2001; More than 22 million (10M; 22M) articles in 285 (260; 285) languages The biggest one is the English version, which alone has 4,329381 (2,782,602; 4,054,844) articles as of September 17, 2013 Capitalizes on the wisdom of the crowd (Tapscott & Williams, 2007) Culture of mediocrity (Cult of amateur [Keen, 2007); Everything is miscellaneous [Weinberger, 2007]) Expert vs. laypeople knowledge (Knig, 2013) [The text in italics and blue are stats in March 2009; red are in September, 2012]

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Research on Wikipedia Evaluation of the Wikipedia Accuracy of the content (e.g., Lih, 2004; Giles, 2005; Rosenzweig, 2006) Used by politicians (e.g., Blakely, 2006; Davis, 2006) Growth sustainability (Spinellis & Louridas, 2008) Improvement of the Wikipedia Incorporation of Semantic Web components (Volkel, Krotzsch, Vrandecic, Haller, & Studer, 2006) Tool development to expand the functionality of the Wikipedia (Vigas, Wattenberg, & Dave, 2004) History FlowHistory Flow WikiScanner (e.g., Hafner, 2007)

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Research on Wikipedia Maintenance of the Wikipedia 1,437 system operators (sysops) (1,576; 1463), 648 of them active, and 34 (27; 35)bureaucrats as of September 2013 Major task of sysops is to fight vandalism (Riehle, 2006) and trolls (Shachaf & Hara, 2010) 11% of articles are vandalized at least once; 0.13% of articles are locked (Spinellis & Louridas, 2008) 77,000 active users (English Wikipedia) as of September 2013 Contributions to Wikipedia Contributors desire to identify and publish facts about the world in de facto- collective setting (=~ similar to scientific community) (Forte & Bruckman, 2006) Unbalanced contributions to Wikipedia (Ortega, Gonzalez-Barahona, & Robles, 2008) Free rider and collective goods (Anthony, et al., 2009) Larkers to contributor (Halfaker, Keyes, & Taraborelli, 2013)

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Research on Wikipedia Wikipedia as a Community Collective-sensemaking (Nagar, 2012) Coordination through WikiProject (Forte, et al., 2012) Global Wikipedia Negotiation of cultural values, a case of Muhammad Cartoon (Morgan, Mason, & Nahon, 2012) Chinese copycats of Wikipedia (Zhang, in press) Most controversial pages (Yasseri, et al., in press) CNN.comCNN.com SLIS S514 5