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

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力 杨

2024年04月12日 05:16 編集済み

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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

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  Simranjit Kaur

  • Gurobi Staff

  2026年11月13日 01:26

  This post is more than two years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.
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  Jaromił Najman

  • Gurobi Staff

  2024年04月12日 09:55 編集済み

  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.

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  力 杨

  2024年04月12日 10:21

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  Thank you very much and have a great weekend.

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