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

Answered

Tobias Völk

• May 26, 2022 17:22

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

0

• 

  Jaromił Najman

  Gurobi Staff

  • May 30, 2022 08:22
  • Edited

  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

  0
• 

  Tobias Völk

  • July 16, 2022 22:58

  

  

  

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

  0

Please sign in to leave a comment.