Lorenz Wagner
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Activity overview
Latest activity by Lorenz Wagner-
Lorenz Wagner commented,
Riley Clement Thank you for your anwser. What is the difference between the linear approximation and the dynamic outer approximation? And is it also possible, assuming I approximate \( y=0.5+0.5(1-...
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Lorenz Wagner created a post,
Obtain linear approximation
AnsweredHello, I have the following question. I use addGenConstrExp and addGenConstrLogistic to linearly approximate an exponential and a logarithmic function. Is it possible that I can somehow output the ...
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Lorenz Wagner created a post,
Solve scheduling model using a greedy heurisitc
AnsweredI have the following scheduling problem. Relatively simple and not very complex (only serves as an example). The indexes are \(I\) worker, \(T\) days and \(J\) shift. The decision variable is \(x_{...
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Lorenz Wagner created a post,
Technical questions regarding binary variables
AnsweredHello, I have a purely technical question about Gurobi. Suppose I have the variable \(y_{ijk} \in [0;1]\) . Now I want to define a binary variable \(x_{ijk}\) that takes the value 1 if \(y_{ijk}=1...
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Lorenz Wagner created a post,
Weird incumbent behavior
AnsweredHello, I have the following problem. I am trying to evaluate the lowe bound and the incumbent via the log of my model and use the glt.get_dataframe() command to create a DataFrame. Unfortunately I ...
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Lorenz Wagner commented,
Thank you so much!
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Lorenz Wagner commented,
Riley Clement That would be perfect, as I prefer matplotlib too. Thank you so much
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Lorenz Wagner commented,
Hi Riley Clement , thank you. It works now. The plot can be output. But unfortunately, the scales are wrong. In the initial plot above, the values of the objective function are shown on the left, b...
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Lorenz Wagner commented,
Hi Riley Clement, thanks. Did the trick. I have now used your MIP example and tried to create the plot for it (even though you probably won't see anything there). I have followed this video. I ende...
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Lorenz Wagner commented,
Hi Riley Clement. Thank you for your answer. I tried using gurobi-logtools, but i always get this error: Traceback (most recent call last): File "G:\M..\Model.py", line 502, in <module> summary...