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Wikipedias: collaborative web-based encyclopedias as complex networks
Abstract Wikipedia is a popular web-based encyclopeWikipedia is a popular web-based encyclopedia edited freely and collaboratively by its users. In this paper we present an analysis of Wikipedias in several languages as complex networks. The hyperlinks pointing from one Wikipedia article to another are treated as directed links while the articles represent the nodes of the network. We show that many network characteristics are common to different language versions of Wikipedia, such as their degree distributions, growth, topology, reciprocity, clustering, assortativity, path lengths, and triad significance profiles. These regularities, found in the ensemble of Wikipedias in different languages and of different sizes, point to the existence of a unique growth process. We also compare Wikipedias to other previously studied networks.dias to other previously studied networks.
Added by wikilit team Added on initial load  +
Collected data time dimension Cross-sectional  +
Comments The article network characteristics accross multiple Wikipedias showed "that the growth process of Wikipedias is universal" p.8
Conclusion Based on our results, it is very likely thBased on our results, it is very likely that the growth process of Wikipedias is universal. The similarities between Wikipedias in all the measured characteristics suggest that we have observed the same kind of a complex network in different stages of development. We have also found that certain individual Wikipedias, such as Polish or Italian, significantly differ from the other members of the observed set. This difference can be seen most easily in their degree distributions, but also shows in assortativity, clustering and the triad significance profile. In the case of the Polish Wikipedia, where the discrepancies are the greatest, we have found that they were caused by an editorial decision involving calendar pages. This shows that the common growth process we have observed is very sensitive to community-driven decisions. We have shown further that Wikipedia article networks on the whole resemble the WWW networks. Specifically, they belong to the TSP superfamily described in Ref. 24 that includes WWW and social networks, and exhibit smallworld behavior, with average shortest path lengths close to those of a random network. In some characteristics, however, large Wikipedias seem to diverge from the WWW. Their reciprocity is lower than that of the WWW reported in Ref. 22 , and their average shortest path lengths seem to tend to a stable value. It is possible that the specific properties of Wikipedias are related to the underlying structure of knowledge, but also that their shared features stem from growth dynamics driven by free contributions, common policies, and community decision making. Whichever the case, the regularities we have found point to the existence of a unique growth process. These findings in turn support the method of using statistical ensembles in network research, and, finally, affirm the role of statistical physics in modeling complex social interaction systems such as Wikipedia.ial interaction systems such as Wikipedia.
Data source Experiment responses  + , Websites  + , Wikipedia pages  +
Doi 10.1103/PhysRevE.74.016115 +
Google scholar url http://scholar.google.com/scholar?ie=UTF-8&q=%22Wikipedias%3A%2Bcollaborative%2Bweb-based%2Bencyclopedias%2Bas%2Bcomplex%2Bnetworks%22  +
Has author Vinko Zlatić + , Miran Božičević + , Hrvoje Štefančić + , Mladen Domazet +
Has domain Physics +
Has topic Size of Wikipedia +
Issue 1  +
Peer reviewed Yes  +
Publication type Journal article  +
Published in Physical Review E - Statistical, Nonlinear, and Soft Matter Physics +
Research design Statistical analysis  +
Research questions Wikipedia is a popular web-based encyclopeWikipedia is a popular web-based encyclopedia edited freely and collaboratively by its users. In this paper we present an analysis of Wikipedias in several languages as complex networks. The hyperlinks pointing from one Wikipedia article to another are treated as directed links while the articles represent the nodes of the network.ticles represent the nodes of the network.
Revid 11,103  +
Theories In the last few years the physics communitIn the last few years the physics community has paid a lot of attention to the field of complex networks. A considerable amount of research has been done on different real world networks, complex network theory, and mathematical models 1–4 . Many real world systems can be described as complex networks:WWW 5 , internet routers 6–8 , proteins 9 , and scientific collaborations 10 , among others. Complex network theory benefitted from the study of such networks both from the motivational aspect as well as from the new problems that arise with every newly analyzed system.at arise with every newly analyzed system.
Theory type Analysis  +
Title Wikipedias: collaborative web-based encyclopedias as complex networks
Unit of analysis Language  +
Url http://dx.doi.org/10.1103/PhysRevE.74.016115  +
Volume 74  +
Wikipedia coverage Main topic  +
Wikipedia data extraction Dump  +
Wikipedia language Multiple  +
Wikipedia page type Article  + , Information categorization and navigation  +
Year 2006  +
Creation dateThis property is a special property in this wiki. 15 March 2012 20:36:42  +
Categories Size of Wikipedia  + , Physics  + , Publications  +
Modification dateThis property is a special property in this wiki. 30 January 2014 20:33:05  +
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