Riley Clement
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Activity overview
Latest activity by Riley Clement-
Riley Clement commented,
Hi Yanda, Can you take a look at the following article and try to generate a MPS file? How do I write an MPS model file from a third-party API? There aren't many of us familiar with GAMS. - Riley
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Riley Clement commented,
Hi Yutian, If you're not creating constraints using matrix multiplication, then you're better off not using MVars (because using MVars in this way is very slow). Just use ordinary variables: x = m...
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Riley Clement commented,
Hi Yin Can, This may only be an issue if the end result is different - is it different? If the two approaches do end up with different results then I would try writing the models to LP files then...
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Riley Clement commented,
Hi Ashish, Unfortunately a standard Benders implementation just typically doesn't work that well without various problem specific improvements to the algorithms - especially if there is only a sing...
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Riley Clement commented,
Hi Yin Can, Then when I tried to reset the model objective function in 2nd iteration without rebuilding it, The variable wasn't saved and thus can not refer to it. Yes, you are correct. does it...
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Riley Clement commented,
Hi Ashish, In the .dlp file I get variables like C1, C2 , C3, etc. but I also observed C2(120) or C6 (20). What is the meaning of value inside the bracket? It is the number of variables in the c...
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Riley Clement commented,
Hi Yin Can, Would it be possible to rerun the subproblem with a different objective coefficient without reconstructing the model? Yes, typically this is the way you would do it. I guess you're c...
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Riley Clement commented,
Hi Yilu, The mechanisms behind cuts and lazy constraints are almost identical so the explanations in that post and others linked from it generalize to user cuts: user cuts are not necessarily adde...
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Riley Clement commented,
Also some resources here for case studies and jupyter notebooks: https://www.gurobi.com/resource-center/ - Riley
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Riley Clement commented,
Hi Ravi, In Lecture 2 of Section 1, the instructor mentioned an advanced course on optimization. However, I couldn't find that course. Could you please provide the link to the course lectures? I'...