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  • 1
    This would be better posted in Computational Science or Cross Validated (Statistics). Commented Jan 21, 2013 at 21:19
  • 2
    Could you provide more detail/specificity regarding the nature of "hard" and "soft" constraints? Commented Sep 3, 2013 at 14:28
  • What are the row constraints? Commented Oct 21, 2013 at 13:09