
Simon Jantsch
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Latest activity by Simon Jantsch-
Simon Jantsch commented,
If I disable Presolve completely I still observe the same behaviour. I have posted my question on stack overflow, maybe somebody there can help: https://stackoverflow.com/questions/57770333/gurobi-...
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Simon Jantsch commented,
Unfortunately that does not seem to work as if I change the objective function the current basis seems to be gone, it starts again and needs many iterations (>20). But there needs to be a way to ex...
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Simon Jantsch commented,
Thank you for your comment. That clears things up for me a bit. Regarding the gurobi interface: if I use primal simplex and find in the callback that the current value of SPX_OBJVAL is already abov...
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Simon Jantsch created a post,
Checking intermediate solutions against a threshold, Linear programming
I am trying to solve a set of inequalities of the form A x ≤ b together with cx ≥ d. I know that solving the LP max qx. A x ≤ b for any positive q (non-negative in at least one position) gives the ...