Result analysis of a MIP Problem

Answered

wentao zou

October 07, 2022 03:29

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Hello everyone,

I have a large-scale MIP proble which can have 300 thousand interger variables, 400 thousand continous variables and 200 thousand constraints. it runs well and i can get the result. However, I want to figure out why the result acts like this. For example, some interger variables are 1 and some are 0. I want to know what constraints affect this interger variables. I can do it myself if it is a small MIP proble. For a large one, is there an efficient way?

I will appreciate if there is any idea.

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  Maliheh Aramon

  • Gurobi Staff

  October 08, 2022 01:07

  Hi Wentao,

  You can use the method Model.getCol(var) to get a Column object capturing the constraints that the variable \(\texttt{var}\) participates in.

  Hope this helps.

  Best regards,

  Maliheh

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