Elisabeth

Gurobi-versary
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  • Total activity 9
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Activity overview

Latest activity by Elisabeth

  • Elisabeth created a post,

    Column Generation - Large Dual Prices

    Awaiting user input
    1. Community
    2. Modeling

    Hi,  I'm trying to solve a graph colouring problem with CG, in which I assign the sets to specific colours. This is a minimisation problem, of which the objective function value cannot be negative....

    • Elisabeth
    • 2 followers
    • 1 comment
    • 1 vote

  • Elisabeth commented,

    1. Community
    2. Programming
    3. Multiple subproblems

    Hi Elisabeth, Subproblems in the sense of Column Generation. The subproblems indeed have the same structure, the only way in which they differ is by the number of decision variables (so it's one co...

  • Elisabeth created a post,

    Multiple subproblems

    Answered
    1. Community
    2. Programming

    Hi,  Just a generic question: how to program multiple subproblems in Gurobi C++? Is this possible without hard coding each and every subproblem?

    • Elisabeth
    • 2 followers
    • 3 comments
    • 1 vote

  • Elisabeth created a post,

    Inconsistent performance

    Awaiting user input
    1. Community
    2. Algorithms

    Hi, My MILP takes about 3 seconds to arrive at a solution most times. When other data with the same "size" and characteristics is used, it can sometimes take more than an hour.  What could be the p...

    • Elisabeth
    • 2 followers
    • 1 comment
    • 0 votes