Graph matching and clustering using spectral partitions

  • Authors:
  • Huaijun Qiu;Edwin R. Hancock

  • Affiliations:
  • Department of Computer Science, University of York, York Y010 5DD, UK;Department of Computer Science, University of York, York Y010 5DD, UK

  • Venue:
  • Pattern Recognition
  • Year:
  • 2006

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Abstract

Although inexact graph-matching is a problem of potentially exponential complexity, the problem may be simplified by decomposing the graphs to be matched into smaller subgraphs. If this is done, then the process may cast into a hierarchical framework and hence rendered suitable for parallel computation. In this paper we describe a spectral method which can be used to partition graphs into non-overlapping subgraphs. In particular, we demonstrate how the Fiedler-vector of the Laplacian matrix can be used to decompose graphs into non-overlapping neighbourhoods that can be used for the purposes of both matching and clustering.