Dejan Salch

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Recent activity by Dejan Salch Recent activity Votes

  • How to model a piecewise linear function?

    Answered

    Hello, I am currently trying to implement the following in Gurobi. I currently have a cosntraint that looks like this: \(A_i\cdot x_{it}\leq Para \cdot \sum_j y_{jit}\). Here, \(x_{it},y_{ijt}\in \...

    Dejan Salch Edited 2 followers 3 comments 0 votes

  • Questions concering Gap in Output

    Hello, I am currently comparing the results of my compact model with those of my column generation heuristics for a final thesis. To do this, I solve the compact model with a time limit of 7200 sec...

    Dejan Salch 1 follower 0 comments 1 vote

  • How to use a dict for .start?

    Answered

    Hello, I have the following dict, which I would like to use as a start solution for my MIP. Unfortunately, I haven't quite figured out what the correct code for this would be. The dict reflects the...

    Dejan Salch 2 followers 1 comment 0 votes

  • Compute Lagranigan Bound

    Answered

    Hello, I asked this question today on Operations Research Stack Exchange about how to determine whether a found solution of a Column Generation approach is optimal for a MIP. The answer was that I ...

    Dejan Salch 2 followers 1 comment 0 votes