Practical graph isomorphism, II

  • Authors:
  • Brendan D. Mckay;Adolfo Piperno

  • Affiliations:
  • Research School of Computer Science, Australian National University, Canberra ACT 0200, Australia;Dipartimento di Informatica, Sapienza Universití di Roma, Via Salaria 113, I-00198 Roma, Italy

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 2014

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Abstract

We report the current state of the graph isomorphism problem from the practical point of view. After describing the general principles of the refinement-individualization paradigm and pro ving its validity, we explain how it is implemented in several of the key implementations. In particular, we bring the description of the best known program nauty up to date and describe an innovative approach called Traces that outperforms the competitors for many difficult graph classes. Detailed comparisons against saucy, Bliss and conauto are presented.