
Xianbang Chen
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Activity overview
Latest activity by Xianbang Chen-
Xianbang Chen commented,
Hi Riley, I’m using a Julia package where JuMP handles the modeling. It seems JuMP doesn’t support SolutionNumber, but it’s helpful to know that Gurobi does—I’ll try using that feature when I work ...
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Xianbang Chen commented,
Hi Riley, Thank you for your help. Yes, I read the files and tried a few things. Based on my experience, SolutionNumber doesn’t seem to work in JuMP. If I set SolutionNumber before optimize!, the m...
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Xianbang Chen commented,
Below is a demo code. How to make ``value.(x)`` always output ``sol3``? using JuMP, Gurobi, MathOptInterfaceconst MOI = MathOptInterfacen = 5;capacity = 10.0;profit = [5.0, 3.0, 3.0, 7.0, 4.0];we...
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Xianbang Chen created a post,
How can I select the candidate interested in the solution pool?
AnsweredHi Gurobi guys, I am using Gurobi + JuMP to handle a MILP model. Below is my setting: set_optimizer_attribute(jump_model, "PoolSearchMode", 2) set_optimizer_attribute(jump_model, "PoolGap", 0.01) ...
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Xianbang Chen commented,
Since you are already using version 9.x.x, this means that your license is valid for all 9.x.x versions. There is no need to update your license unless it is expired. Thank you very much. I love ...
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Xianbang Chen commented,
Thanks for your suggestions! You should also think about the MIPGap you want to achieve. Are you really looking for the perfect solution or would a MIPGap of, e.g., 1% be already enough? Yes, I s...
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Xianbang Chen commented,
If you let the tuning tool run for, e.g., 1-2 days, then it should be enough and it is very likely possible that no further fine tuning is required. If you have only a limited amount of time, th...
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Xianbang Chen commented,
BTW, I tried to use a MathJax rather than image to represent the model. But the Latex code for the model is somehow complicated. So I merely replace it with a clearer image. I hope this could impro...
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Xianbang Chen commented,
Yes, please have a look at Posting to the Community Forum. Thanks for this. I will adjust my way for posting a good question. Did you try Gurobi's parameter tuning tool? Not yet, but I just rea...
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Xianbang Chen commented,
Hi Jaromił, I have attached the mps file on https://www.filemail.com/d/kluiopckxswcvir Could you share any suggestions with me?