On graphs with unique node labels

  • Authors:
  • Peter J. Dickinson;Horst Bunke;Arek Dadej;Miro Kraetzl

  • Affiliations:
  • ISR Division, DSTO, Edinburgh, SA, Australia;Institut für Informatik und angewandte Mathematik, Universität Bern, Neubrückstrasse, Bern, Switzerland;ITR, University of South Australia, Mawson Lakes, SA, Australia;ISR Division, DSTO, Edinburgh, SA, Australia

  • Venue:
  • GbRPR'03 Proceedings of the 4th IAPR international conference on Graph based representations in pattern recognition
  • Year:
  • 2003

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Abstract

A special class of graphs is introduced in this paper. The graphs belonging to this class are characterised by the existence of unique node labels. A number of matching algorithms for graphs with unique node labels are developed. It is shown that problems such as graph isomorphism, subgraph isomorphism, maximum common subgraph and others have a computational complexity that is only quadratic in the number of nodes. We also discuss some potential applications of the considered class of graphs.