Constraints in Gurobi

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Shahrzad Valizadeh

2024年06月30日 10:20

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I have the following constraint:
            model.addConstr(aux1["O+", "1", m, t] == demand - sum(i1["O+", "1", m, t] for m in range(1, m)))
            model.addConstr(aux2["O+", "1", m, t] == gp.max_(0, aux1["O+", "1", m, t]))
            model.addConstr(aux3["O+", "1", m, t] == i1["O+", "1", m, t] - aux2["O+", "1", m, t])
            model.addConstr(I1["O+", "1", m, t] == gp.max_(0, aux3["O+", "1", m, t]))

which is representative of:is there anything wrong with using auxiliary variables?

 

 

 

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• 正式なコメント

  

  Simranjit Kaur

  • Gurobi Staff

  2026年11月13日 01:23

  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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  Riley Clement

  • Gurobi Staff

  2024年06月30日 23:12

  Hi Shahrzad,

  It looks correct.  You would not be able to formulate this using the current Gurobi API without using auxiliary variables.

  - Riley

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  Shahrzad Valizadeh

  2024年06月30日 23:30

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  Thank you Riley for your prompt response.

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