How to assign other variables based on the range of decision variables

Answered

力 杨

• April 12, 2024 05:16
• Edited

Suppose there is a decision variable time_arrive[i] with value b, I think rate[t,i]=1 when t is at time_arrive[i] and time_arrive[i]+b.

Since time_arrive[i] is a decision variable, it is difficult to implement.

it's like

for t in range(T):
    for i in range(I):
        if time_arrive[i]<=t<=time_arrive[i]+b:
             rate[t,i]=1

0

• 

  Jaromił Najman

  Gurobi Staff

  • April 12, 2024 09:55
  • Edited

  We discuss how to model conditional statements in the Knowledge Base article How do I model conditional statements in Gurobi? Please note that in your case, since you do not need a strict inequality, you do not have to introduce a positive threshold \(\epsilon\).

  In addition to the conditional statements \(ta \leq t\) and \(t \leq ta+b\) you will have to use the addGenConstrAnd method to model the "and" relation.

  0
• 

  力 杨

  • April 12, 2024 10:21

  

  

  Thank you very much and have a great weekend.

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