Murilo Machado

Gurobi-versary
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Activity overview

Latest activity by Murilo Machado

  • Murilo Machado created a post,

    Start MIP

    Answered
    1. Community
    2. Modeling

    good morning community, I'm a beginner with gurobi and C++, and I'm having some basic difficulties on how to start a MIP solution, either via (.mst) or (.sol). I've read the documentation a lot, bu...

    • Murilo Machado
    • Edited
    • 3 followers
    • 2 comments
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Algorithms
    3. insert heuristic into CallBack

    Hi Maliheh,   Thanks for the answers,   was very clear.

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    • Murilo Machado
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Algorithms
    3. insert heuristic into CallBack

    Hi Maliheh Aramon,   When I say an unfeasible solution, I mean that the solution does not respect all restrictions.   Example: a TSP solution repeating cities.   Another question arose,   model...

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    • Murilo Machado
    • 0 votes

  • Murilo Machado created a post,

    insert heuristic into CallBack

    Answered
    1. Community
    2. Algorithms

    Good morning, I would like to insert heuristics in Gurobi to solve a certain problem. I'm using the callback function. However I have a doubt at the moment that I'm giving a solution. I use the con...

    • Murilo Machado
    • 3 followers
    • 5 comments
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Programming
    3. Is there a limit to the declaration of Gurobi variables?

    OI Eli Towle ,   Thank you very much for the information   att. Murilo O. MACHADO    

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    • Murilo Machado
    • Edited
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Programming
    3. Is there a limit to the declaration of Gurobi variables?

    I'm not very experienced in C++, but I've implemented 3D matrix in C++ and I didn't have any problems. What intrigues me in this case is that Ex1 works and Ex2 doesn't. Ex1: GRBVar vv[6][50][45][45...

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    • Murilo Machado
    • 0 votes

  • Murilo Machado created a post,

    Is there a limit to the declaration of Gurobi variables?

    Answered
    1. Community
    2. Programming

    Good morning, Is there a limit to the declaration of Gurobi variables? I am declaring it as follows: GRBVar vv[6][133][45][45]; and I'm having segmentation error. When I have smaller values I don't...

    • Murilo Machado
    • 3 followers
    • 5 comments
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Other
    3. Gurobi stop criteria

    Hi Jaromił Najman , thank you for the informations. Hi Jennifer Locke, I understand that time is a common criterion of para in exact solvers, but I'm creating a matheuristic and I want to compare i...

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    • Murilo Machado
    • 0 votes

  • Murilo Machado commented,

    1. Community
    2. Other
    3. Gurobi stop criteria

    Hi Jaromił Najman, I would like to terminate Gurobi after it has performed X amount of objective function evaluations. I'm trying to compare the results with an algorithm where the stopping criteri...

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    • Murilo Machado
    • Edited
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  • Murilo Machado created a post,

    Gurobi stop criteria

    Answered
    1. Community
    2. Other

    how to close the gurobi with objective function evaluation amount

    • Murilo Machado
    • 4 followers
    • 6 comments
    • 0 votes