Comparing variables with constants

Answered

Siqi Zhang

May 13, 2023 03:33

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I want to compare variables with constants, like x>p, z=1. x is continuous variables and p is constant, z is binary variable.

I try to solve it with big-M method in Gurobi, I want to know is there any other methods to solve this problem?

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  Jaromił Najman

  • Gurobi Staff

  May 15, 2023 08:34

  There is currently no automatic way in Gurobi to write conditional statements of the form you presented. We discuss a possible solution in How do I model conditional statements in Gurobi?

  If you have additional information that "if \(z=1\) then \(x>p\)" then you could use indicator constraints.

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