Indicator constraints with arbitrary right-hand-side (Python)

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Tobias Völk

2022年05月26日 17:22

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model.addGenConstrIndicator(...)

As far as I can see (though that does not mean much of course), there is no reason why the right-hand-side has to be a float. Neither Math nor Python should pose a problem here and it would make life easier for us users, because we could just write down constraints in the order in which we wrote them down on paper. May I therefore suggest adding this feature?

Best regards,

Tobi

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  Simranjit Kaur

  • Gurobi Staff

  2025年11月16日 23:36

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  Jaromił Najman

  • Gurobi Staff

  2022年05月30日 08:22 編集済み

  Hi Tobi,

  Could you please elaborate more on what exactly the feature should be? A pseudo-code example or similar would be helpful.

  If you think about replacing the rhs argument to be, e.g., a TempConstr, then you might want to use the alternative or overloaded form

  # alternative form
  model.addGenConstrIndicator(x7, True, x1 + 2*x2 + x4 == 1.0 + x5)
  
  # overloaded form
  model.addConstr((x7 == 1) >> (x1 + 2*x2 + x4 == 1.0 + x5))

  Best regards, 
  Jaromił

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  Tobias Völk

  2022年07月16日 22:58

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  The alternative form is what I was looking for, thanks :)

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