%A Dmitry Lizorkin %A Olena Medelyan %A Maria Grineva %T Analysis of Community Structure in Wikipedia %X We present the results of a community detection analysis of the Wikipedia graph. Distinct communities in Wikipedia contain semantically closely related articles. The central topic of a community can be identi?ed using PageRank. Extracted communities can be organized hierarchically similar to manually created Wikipedia category structure. %C Madrid, Spain %D 2009 %P 1221-1221 %L www2009191