Nazmi Sener
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Activity overview
Latest activity by Nazmi Sener-
Nazmi Sener commented,
Hi Ryuta, I don't understand but this problem is vanished after adding print(z_dual.keys()) command. However, after get rid of this warning from the first iteration it again appears in the second i...
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Nazmi Sener created a post,
An error from the dynamic set
AnsweredI want to apply dynamically add decision variables and constraints to my model. But I get a key error from static set. I don't understand what is the problem. Any help will be appreciated. Error: T...
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Nazmi Sener commented,
Hi Jaromil, Thank you for your quick response. i is not equal to k also. I will try to rewrite this constraint. Another question: How can I change coefficient of any parameter in python? I cannot f...
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Nazmi Sener created a post,
Changing coefficients in the constraint
AnsweredDear all, I try to change coefficients of decision variable z for each scenario s. However z is used with two different coefficients. The constraint is given below. How can I do it? Thanks in adva...
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Nazmi Sener commented,
Dear Eli, Thank you for your quick responses. Since it is not easy to get the same error via a minimal example, I tried running a basic model from Gurobi online example library. The problem I tried...
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Nazmi Sener commented,
I use Gurobi 9.1.2 with Conda environment (Python 3.8).
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Nazmi Sener created a post,
gurobipy.GurobiError: Unknown attribute 'DualVio'
AnsweredWhen I run my python code with gurobipy I get the following error message can someone please help. Academic license - for non-commercial use only - expires 2021-06-29Using license file /home/ogr5/g...
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Nazmi Sener commented,
Thank you for your quick response, For second question, I guess "detmas.setAttr("RHS",covcon[athu,k], A[athu,k]*d[k]*hopen[athu] ) " line causes error. I want to do in both codes that: There is a m...
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Nazmi Sener created a post,
Copying Model and Revising Basis Questions
Dear Community Members, 1-) I want to keep my basis of the model. After changing rhs of the model and solve the model again, I want to back old basis(before change) of the model. I tried to apply o...