An Adaptive Prefix-Assignment Technique for Symmetry Reduction

  title={An Adaptive Prefix-Assignment Technique for Symmetry Reduction},
  author={Tommi A. Junttila and Matti Karppa and Petteri Kaski and Jukka Kohonen},
  journal={J. Symb. Comput.},
This paper presents a technique for symmetry reduction that adaptively assigns a prefix of variables in a system of constraints so that the generated prefix-assignments are pairwise nonisomorphic under the action of the symmetry group of the system. The technique is based on McKay's canonical extension framework [J.~Algorithms 26 (1998), no.~2, 306--324]. Among key features of the technique are (i) adaptability---the prefix sequence can be user-prescribed and truncated for compatibility with… 

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  • Computer Science
    Handbook of Satisfiability
  • 2009
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