Sven Rahmann
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Activity overview
Latest activity by Sven Rahmann-
Sven Rahmann created a post,
Best settings for set cover problems
AnsweredHi, I have a typical set cover problem with a few hundreds of variables. Are there any recommended parameter settings that work well with set cover constraints? While Gurobi finds optimal solutions...
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Sven Rahmann commented,
Hello Robert, that is excellent news; thank you. Sven
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Sven Rahmann commented,
Dear Robert, probably you're right. I thought that v would be something like an Mvar populated with the values in attribute x, but I suppose cbGet NodeRel gives you directly the ndarray? In any cas...
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Sven Rahmann created a post,
Reading matrix variables in in callback / Python matrix API
AnsweredI'm attempting to solve a MIP with a 1-dimensional matrix variable "visitors" (integer), using the new Python matrix API. In a user callback, I want to read out the optimal fractional solution in t...
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Sven Rahmann commented,
So I'm experimenting with the matrix API in a model. While it looks helpful, a downside is that an MLinExpr is something completely different from a LinExpr and the two cannot be combined. Concrete...