Alessandra Vieira
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Activity overview
Latest activity by Alessandra Vieira-
Alessandra Vieira commented,
Hi Riley, Hi Simran, long story short: I can't use callback in my case because the expressions and constraints inserted into the model are quadratic! Multi-scenario is also not an answer, because ...
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Alessandra Vieira commented,
Hallo David, Thanks for your answer! What I need is exactly what stays at your first question "expr1==value implies that binvar[len]=1", the vice versa would be a problem since I don't know to tur...
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Alessandra Vieira commented,
Hi David! Thanks for the answer ! The problem is that I need a constraint to generate a condition for another constraint and not a variable, so would be GenConstrIndicator( expr1== value, *binv...
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Alessandra Vieira commented,
Hi David, I had tried to follow the documentation examples but I am still getting the same error. Could you give an example of using C++ / VS? , previous settings: for ( gen = 0; gen <N_GEN ; ...
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Alessandra Vieira created a post,
GenConstrIndicator
AnsweredHi Guys, the first post was supposed empty, so sorrow if I am repeating the question. I need some help here. I am using C++/VS and my Gurobi version is 9.1, and I think I can not install an update...
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Alessandra Vieira created a post,
Re-optimization updating the model X Callback Code
Hi Folks, I trying to solve a two decisions problem with Gurobi C++ API, the first decision is after minimizing one variable with cost as coefficients, the decision to use the machine on the lis...
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Alessandra Vieira commented,
Hi Matthias, Thanks for your answer! What I want now is that the expression that will be minimized besides the coefficient ( C_), also be multiplied for two variables Gurobi, integer P_, and other ...
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Alessandra Vieira commented,
Hi Matthias, I want to get a sum of two variables multiplied over many elements in a loop, it seems that I am just getting one single element of this multiplication. GRBVar P_[T][N_GEN] ; // (i...
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Alessandra Vieira created a post,
Create a array of binaries variables should I use Gurobi C++
AnsweredHi, I am using Gurobi C++, and I m trying to introduce binaries variables as elements of a vector to 1 the machine is on,0 otherwise. How could I do it? Also is it possible to create a vector of...