assign and check

Answered

Jason Chan

• June 04, 2019 07:13

Hey,

 

does Gurobi now support solution assign and check. That is I assign a solution to the model and would like to see if it satisfies all the constraints. I think it would be super useful for debugging. Sometimes the model is big and would be really difficult for us to find which one causes the `infeasible or unbound`.

0

• Official comment

  

  Simranjit Kaur

  Gurobi Staff

  • December 06, 2024 00:58

  This post is more than three 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 why not try our AI Gurobot?.
• 

  Sonja Mars

  Gurobi Staff

  • July 30, 2019 06:57

  Hi Jason,

  Gurobi does not support this directly. However, you can easily import a solution as MIP start and see if Gurobi takes it. If it is not feasible Gurobi will let you know in the log file.

  A second way to achieve this is to explicitly fix the bounds of the variables to the values of the solution in one of the APIs and call model.optimize().

  Best,

    Sonja

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