Kun Zhang
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Latest activity by Kun Zhang-
Kun Zhang commented,
Exactly, thank you very much!
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Kun Zhang commented,
Thank you very much, Tobias. You provide me with very important information. I also notice that Gurobi provides the Presolve method by default so that it's possible no further to use the simplex me...
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Kun Zhang commented,
Gurobi Optimizer version 9.0.1 build v9.0.1rc0 (win64)Optimize a model with 106 rows, 65 columns and 135 nonzerosModel fingerprint: 0x12f24080Coefficient statistics:Matrix range [1e+00, 7e+00]Objec...
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Kun Zhang created a post,
Why gurobi report negative reduced cost for some variables in optimal solution?
AnsweredI solve the relaxation of the above MIP problem. The model.status is 2, however, the y variables return negative reduced costs. What went wrong?