Dejan Salch
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Activity overview
Latest activity by Dejan Salch-
Dejan Salch commented,
Dear Jaromił Najman. Thank you for your anwser. Sadly i cannot reproduce the error i was facing. Now it work. Cann i also model functions such a power or a sigmoid function without using addGenCons...
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Dejan Salch created a post,
How to model a piecewise linear function?
AnsweredHello, 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 \...
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Dejan Salch created a post,
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...
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Dejan Salch created a post,
How to use a dict for .start?
AnsweredHello, 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...
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Dejan Salch created a post,
Compute Lagranigan Bound
AnsweredHello, 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 ...