Jaromił Najman
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Latest activity by Jaromił Najman
Jaromił Najman commented,
Hi Carl, Did you double check that constraints assuring that \(\lambda = 3\) are indeed in the \(\texttt{master.model}\) object? For this you can use the write method and generate a humanreadable ...

Jaromił Najman commented,
In that way I still have to compute the obj function value, is there any shortcut? (a workaround could be to assign the obj function to a single variable and then read its relaxed value...) Unfor...

Jaromił Najman commented,
To access the node relaxation solution through the JAVA API, you have to use the GRBCallback.getNodeRel() method.

Jaromił Najman commented,
Hi Chenhui, Your model has discrete variables Variable types: 1799 continuous, 8121 integer (8121 binary) In this case, Gurobi does not report secondorder cone constraints but only the number of q...

Jaromił Najman commented,
Hi Chenhui, I want to build this model as a SOCP to solve it, but Gurobi does not indicate "Presolved model has * secondorder cone constraints." Instead, it just says "Presolved model has 372 qua...

Jaromił Najman commented,
Hi Chenhui, Did you solve the linearized model to a 0% MIPGap? If not, then there is still room for improvement of the objective value, i.e., a better feasible point can be found, e.g., by providin...

Jaromił Najman commented,
Hi Xiexin, It looks like YALMIP does not support Gurobi's nonlinear features. If you would like to use Gurobi as a nonlinear solver, I would recommend switching to one of Gurobi's native APIs. I wo...

Jaromił Najman commented,
Hi Xiexin, This function is a part of optimization function. And its constraints are linear with some equality. When I set this into constraints(including vectors),the problem occurred. Could you...

Jaromił Najman commented,
Hi Margi, I haven't seen such a message previously. Could you please explain which message exactly did you not see previously? What you currently posted is the normal output for models with discr...

Jaromił Najman commented,
Gurobi v11 does not directly support terms of this kind. However, you can use Gurobi's general function constraints to model the term you need. In particular, you will need to model each signomial ...