Breaking Row and Column Symmetries in Matrix Models

  title={Breaking Row and Column Symmetries in Matrix Models},
  author={P. Flener and A. Frisch and Brahim Hnich and Z. Kiziltan and I. Miguel and Justin Pearson and T. Walsh},
  • P. Flener, A. Frisch, +4 authors T. Walsh
  • Published 2002
  • Computer Science, Mathematics
  • ArXiv
  • We identify an important class of symmetries in constraint programming, arising from matrices of decision variables where rows and columns can be swapped. Whilst lexicographically ordering the rows (columns) breaks all the row (column) symmetries, lexicographically ordering both the rows and the columns fails to break all the compositions of the row and column symmetries. Nevertheless, our experimental results show that this is effective at dealing with these compositions of symmetries. We… CONTINUE READING
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