Dissemin is shutting down on January 1st, 2025

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EDP Sciences, The European Physical Journal B, 2(77), p. 265-272

DOI: 10.1140/epjb/e2010-00261-8

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Line Graphs of Weighted Networks for Overlapping Communities

Journal article published in 2009 by Ts S. Evans, R. Lambiotte ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

In this paper, we develop the idea to partition the edges of a weighted graph in order to uncover overlapping communities of its nodes. Our approach is based on the construction of different types of weighted line graphs, i.e. graphs whose nodes are the links of the original graph, that encapsulate differently the relations between the edges. Weighted line graphs are argued to provide an alternative, valuable representation of the system's topology, and are shown to have important applications in community detection, as the usual node partition of a line graph naturally leads to an edge partition of the original graph. This identification allows us to use traditional partitioning methods in order to address the long-standing problem of the detection of overlapping communities. We apply it to the analysis of different social and geographical networks. ; Comment: 8 Pages. New title and text revisions to emphasise differences from earlier papers