Eliass Fennich
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Activity overview
Latest activity by Eliass Fennich-
Eliass Fennich commented,
Hi Riley,Thanks for the reply. I’ve created a small, self-contained example that reproduces the issue. Since the code is part of an unpublished research project, I’d prefer to share it privately. C...
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Eliass Fennich created a post,
addCut ignored despite PreCrush=1 in Branch-and-Cut implementation
AnsweredHello,I'm implementing a Branch-and-Cut algorithm for my problem using Gurobi, and I'm trying to add problem-specific user cuts through the callback. I have set the following parameters: PreCrush =...
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Eliass Fennich commented,
A likely explanation could be that multiple heuristics applied to the same LP relaxation solution found solutions that violate the same lazy constraint. Does this mean that disabling the Gurobi h...
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Eliass Fennich commented,
Thank you Maliheh for your quick answer. I understand your point. Due to multi-threading and the time it takes for newly added lazy constraints to sync among all threads, you might encounter solut...
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Eliass Fennich created a post,
Redundant Cuts using Lazy
AnsweredHello, I'm working on a branch-and-cut algorithm. Through my analysis of the algorithm's efficiency, I noticed that many of the lazy constraints are redundant. Specifically, even after cutting a so...