Visualizing large and clustered networks

  • Authors:
  • Katharina A. Lehmann;Stephan Kottler

  • Affiliations:
  • University of Tübingen, Wilhelm-Schickard-Institute, Tübingen, Germany;University of Tübingen, Wilhelm-Schickard-Institute, Tübingen, Germany

  • Venue:
  • GD'06 Proceedings of the 14th international conference on Graph drawing
  • Year:
  • 2006

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Abstract

The need to visualize large and complex networks has strongly increased in the last decade. Although networks with more than 1000 vertices seem to be prohibitive for a comprehensive layout, real-world networks exhibit a very inhomogenous edge density that can be harnessed to derive an aesthetic and structured layout. Here, we will present a heuristic that finds a spanning tree with a very low average spanner property for the non-tree edges, the so-called backbone of a network. This backbone can then be used to apply a modified tree-layout algorithm to draw the whole graph in a way that highlights dense parts of the graph, so-called clusters, and their inter-connections.