
Angelos Georghiou
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Activity overview
Latest activity by Angelos Georghiou-
Angelos Georghiou created a post,
different versions of Gurobi give different results
AnsweredHi, We are solving a mixed-integer linear problem using Gurobi 9.5.1 on a personal computer and using Gurobi 9.0.1 on the university's HPC. We use a c++ interface to interact with Gurobi. The two ...
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Angelos Georghiou commented,
Thanks a lot Jaromił! best wishes, Angelos
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Angelos Georghiou created a post,
maximizing the sum of max functions
AnsweredHi, I would like to solve the following problem max_{x \in X} sum_{i=1}^N max{ a_i^T x, b_i^T x} where X is a polyhedral set in R^n, and a_i, b_i are given vectors. Essentially I am maximizing t...
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Angelos Georghiou commented,
Thanks a lot Daniel best wishes, Angelos
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Angelos Georghiou commented,
Dear Daniel, Thank you for your suggestion. For now, using Fourier Motzkin elimination is not an option as I need to add many variables and this will be nearly impossible to do. Let me ask a small ...
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Angelos Georghiou created a post,
Using Callbacks for Column-and-constraint generation algorithm
AnsweredHi, I am implementing a column-and-constraint generation algorithm. The problem is solved as follows: A relaxed master MILP problem is solved. Using the optimal solution of the master problem, we s...