The Category Structure in Wikipedia: To Analyze and Know How It Grows.

Wikipedia is a famous encyclopedia and is applied to a lot of famous fields for many years, such as natural language processing. The category structure is used and analyzed in this paper. We take the important topological properties into account, such as the connectivity distribution. What's the most important of all is to analyze the growth of the structure from 2004 to 2012 in detail. In order to tell about the growth, the basic properties and the small-worldness is brought in. Some different edge attachment models based on the properties of nodes are tested in order to study how the properties of nodes influence the creation of edges. We are very interested in the phenomenon that the data in 2011 and 2012 is so strange and study the reason closely. Our results offer useful insights for the structure and the growth of the category structure. © 2013 Springer-Verlag.