Silke Horn
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Latest activity by Silke Horn
Silke Horn commented,
Thanks! We will consider this.

Silke Horn commented,
Gurobi uses the concurrent optimizer to solve your LP, i.e., it runs multiple algorithms in parallel; the fastest one wins the race. However, to keep the behavior deterministic, it needs to continu...

Silke Horn commented,
Your code looks fine. The output is indeed unexpected (if everything is indeed executed in the right order). What do you get when you print the expressions exprUS and exprNonUS before building the ...

Silke Horn created an article,
KeyError: 'Missing constraint index'
The error message "KeyError: 'Missing constraint index'" appears when you try to add a single constraint using the method Model.addConstrs(). This is used for adding multiple constraints to a model...

Silke Horn commented,
I added another (less general) approach to your other post here.

Silke Horn commented,
Hi, You could add some auxiliary binary variables; some that are 1 if and only if X > 0 and some others that are 1 if and only if X < 1. B0 = m.addVars(M, N, vtype=GRB.BINARY)B1 = m.addVars(M, N, v...

Silke Horn commented,
Hi Prasanna, Counting the total number of feasible solutions is a very difficult problem and this number can easily get gigantic. Gurobi cannot do this since it is not an optimization problem. You ...

Silke Horn commented,
Hi David, The angles should always be in radians. Best regardsSilke

Silke Horn commented,
Hi, What are the types of c and s? Are they scalars or decision variables? If they are decision variables: One cannot use a model's decision variables in ifconditions while building the model (sin...

Silke Horn commented,
Hi, You are right that Gurobi currently does not provide any SDP algorithms. Our development team is considering this feature, but we cannot make any promises. Have you looked at the SDP plugin of ...