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5
votes
1answer
128 views

What fraction of the search space has been searched for ILP?

Is there a way to make Gurobi output (an estimate of) how much of the search space has already been cut off as infeasible? If not with Gurobi are you aware of any binary only (912 of them) ILP solver ...
3
votes
1answer
83 views

A tricky Bi-Level Location Problem using VISUM

I'm writing my thesis on the optimal location of Air-Taxi Stations. I'm using PTV VISUM for the transport model where I'll inherit the Origin-Destination demand matrix. I come from transportation ...
1
vote
0answers
78 views

Binary variable with two criteria in Gurobi (Java)

I have the following problem in Gurobi (Java). I have a binary variable $b$ that is supposed to be $1$ or $0$ depending on my optimisation variable $x$. It should be true that $b = 1$ if $c_1 \le x \...
3
votes
2answers
287 views

How to get an extreme ray of an LP from Gurobi

I am working on a problem of form \begin{equation} \begin{array}{l @{\quad} l} \mathrm{max}_{x, u} & p^{\top} u \\ \text{st.} & A u + a x \leq 0 \\ & x \in \{0, 1\...