Runfeng Yu
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Activity overview
Latest activity by Runfeng Yu-
Runfeng Yu commented,
Hi Jaromił, I’m very pleased to hear your good news. As a Gurobi user, it’s an honor to have identified such an issue, and I’m delighted that it will be resolved in the next version. Gurobi is the ...
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Runfeng Yu commented,
Hi Jaromił, It’s great to hear from you. I know that you have all been working. Identifying problems is often simple or happens by chance, but solving them is indeed a complex task. I look forward ...
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Runfeng Yu commented,
Hi Jaromił, Deeply thank you for your help. Looking forward to your good news.
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Runfeng Yu commented,
Hi Jaromił, Here are the two models in .lp format. https://1drv.ms/f/c/5fddeb3c4240ada2/EgjCx6zP4ShJn4K8aHhuiqcBunzcGxQLliQDHvG5ejcGUA?e=rpVtU3 These files are a bit large. I hope they will be h...
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Runfeng Yu commented,
Hello Jaromił Najman！Nice to meet you again and sorry for reply you so late because of busy days. Yes, I use the latest version 11.0.3.
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Runfeng Yu created a post,
Add additional constraints but the objective decreased in minimize problem
AnsweredRecently, I encountered an issue with Gurobi, which I suspect is related to precision. Here are the details: If I don’t add these additional constraints, Gurobi returns an optimal solution of 1.187...
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Runfeng Yu commented,
Hi Elisabeth, Thank for your reply! And it really helps. Best regards,Runfeng
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Runfeng Yu commented,
Hi Jonasz, Thank you for your plain explanation and timely reply!And I will try this method to recreate my codes. Best regards,Runfeng
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Runfeng Yu created a post,
Why Variable is not in model after model.copy()
AnsweredI have built a model called m and a linear expression lin_exp with variables x.And I used the function m.copy() to create another model n. Now, I want to modify the objective function of n. I tried...
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Runfeng Yu commented,
Hi Jaromił, Thanks for your patient answer, now I finally understand how it works！ Best regards, Runfeng