Abstract
Using a longitudinal network analysis approach, we investigate the structural development of the knowledge base of Wikipedia in order to explain the appearance of new knowledge. The data consists of the articles in two adjacent knowledge domains: psychology and education. We analyze the development of networks of knowledge consisting of interlinked articles at seven snapshots from 2006 to 2012 with an interval of one year between them. Longitudinal data on the topological position of each article in the networks is used to model the appearance of new knowledge over time. Thus, the structural dimension of knowledge is related to its dynamics. Using multilevel modeling as well as eigenvector and betweenness measures, we explain the significance of pivotal articles that are either central within one of the knowledge domains or boundary-crossing between the two domains at a given point in time for the future development of new knowledge in the knowledge base.
Highlights
The social web affords natural interaction dynamics among a large number of participants
As new knowledge in the form of concepts, connections and facts is introduced to the knowledge base, the collective knowledge of the community develops in a continuous process
Data We investigated the relevant factors for development of new knowledge in Wikipedia, focusing on the two related knowledge domains psychology and education
Summary
The social web affords natural interaction dynamics among a large number of participants. The interplay between the individual and the social in a selforganizing system of mass collaboration is based on the creation and use of shared digital artifacts that is enabled by Web 2.0 technologies (cf [4], [5]). Individuals externalize their knowledge into artifacts [6], building a digital knowledge base with a network structure of interlinked contributions. As new knowledge in the form of concepts, connections and facts is introduced to the knowledge base, the collective knowledge of the community develops in a continuous process (cf. [9])
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