Dependent variables

Answered

Sander Mertens

December 21, 2022 11:43

• 
• 
• 

Hi,

I was wondering how dependent variables should be handled within Gurobi. For instance, the decision variable in the model is X_{t}. Another variable, S_{t} is dependent on the value of the decision variable:

S_{t+1} = S_{t} - X_{t}

Should the variable be added with model.addVars() like the decision variable, or should this be handled in a different matter?

Related to

• Python

0

• 

  Maliheh Aramon

  • Gurobi Staff

  December 24, 2022 03:38

  Hi Sander, 

  • You need to define both \(X\) and \(S\) as decision variables using the Model.addVars() method.
  • You can then enforce the relationship between \(X\) and \(S\) variables by adding the constraints \(S_{t+1} = S_t - X_t\) using the Model.addConstrs() method.

  Best regards,

  Maliheh

  0
• 

  Sander Mertens

  December 28, 2022 15:47

  • 
  • 
  • 

  Thank you!

  0

Please sign in to leave a comment.