Lucas Pierezan Magalhães

Results 8 comments of Lucas Pierezan Magalhães

Hi @michaelbynum , thanks for your reply. I don't know of any solver that has this behavior. I quickly tested with scip (pyscipopt), gurobi (gurobipy) and highs (highspy): if a...

Hi @alexhoen , thanks for your interest. Sharing some tests I did: 1) Running the original mps with gurobi returns optimal status. But I get a warning about the range...

Thanks for the analysis. I would expect a solution whose violations are within the specified tolerances to be considered feasible. So, in a way, using presolve indirectly implies smaller tolerances....

Hello everyone, especially @alexhoen, sorry for returning to this issue, but I did some more tests and would like to share my context better and ask a question. # Context...

Hi @alexhoen , thank you for this insightful analysis. I don't have the time at the moment to evaluate the proposed solution in depth, but I have already achieved better...

Hi @jajhall , thanks for your time! And what about this model: [model_min_custo_368.txt](https://github.com/ERGO-Code/HiGHS/files/13952299/model_min_custo_368.txt) The matrix coefficients are better. ![image](https://github.com/ERGO-Code/HiGHS/assets/856658/c87a3e8f-79ac-410e-8eeb-e13a5a7857d0) Both Gurobi and SCIP returns optimal status, even with integer tolerance...

> Thanks for the instance. I can probably identify the presolve reduction that causes the problem > > I can believe that SCIP is more robust. If this is more...