Nan D
- Total activity 23
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Activity overview
Latest activity by Nan D-
Nan D commented,
Hi Riley Thank you for your reply! So, if I understand you correctly, sadly the Gurobi log tools does not provide a timeline data frame for multi-objective problems?Do you have advice for logging d...
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Nan D created a post,
Gurobi logtools Python package
AnsweredHi!I just came across the open-source package “gurobi-logtools” that was made by the Gurobi support team. It seems like it’s the exact thing I am looking for. However, in the tech talk a question i...
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Nan D commented,
Hi Jaromil, thank you for the explanation! I indeed see in the log that the model is solved as a MIP (Continuous model is non-convex — solving as a MIP). However, when I was solving different model...
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Nan D commented,
Hi Mario, thank you for your answer! It has gotten much clearer now what to do. I do wonder: why do we need a Gurobi Env for this use case? It’s the first time I see it, although I have solved othe...
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Nan D created a post,
Running multiple (unrelated) LP models
AnsweredHi, I would like to run multiple LP models automatically one after the other in Python (so not parallel). I will use a for loop for this and thus create a new LP model and solve it in each iteratio...
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Nan D commented,
Hi, Thank you for your quick reply. It’s clear! kind regards
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Nan D created a post,
Gurobi Python lower bound not printed
AnsweredHi! I’m using Gurobi in combination with Python. My model contains several variables that have a lower bound of zero. I added these by using the lb=0 parameter to the addVars() method (although I k...
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Nan D created a post,
Worst-case complexity non-convex model
AnsweredHi, I’m solving a non-convex quadratic problem with Gurobi and I was wondering what the worst-case complexity is. Is it exponential (i.e. O(2^n))? Thank you!
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Nan D commented,
Thank you Jonasz Staszek and Jaromił Najman. It’s clear!
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Nan D created a post,
Python quicksum() versus sum()
AnsweredHi! I have a question about the Gurobi documentation of Pythons quicksum(). It says: “a version of the Python sum function that is much more efficient for building large Gurobi expressions”. Does t...