Taihao Zhang
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Taihao Zhangさんの最近のアクティビティ-
Taihao Zhangさんがコメントを作成しました:
Hi Jaromił, thank you for your explanation. I tried adding all indicator variables in the beginning, which however messed up my initial heuristic for MIPStart, and as you said, them being exponenti...
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Taihao Zhangさんがコメントを作成しました:
Hi Jaromił, I stumbled upon this post while searching for general constraints. In my case I actually try to do the latter of the options you gave: I have a general constraint (indicator constrain...
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Taihao Zhangさんがコメントを作成しました:
Hi Riley, you are right that a larger instance works as expected. Meanwhile, I have worked out a workaround where I use a strategy pattern to retrieve fractional solutions in MIPNODE and integer so...
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Taihao Zhangさんがコメントを作成しました:
Hi Riley, I'm afraid that doesn't change much. This is a fairly small instance, so I guess the model is solved before diverting to cutting planes (?). Of course, this process should (in theory) yie...
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Taihao Zhangさんがコメントを作成しました:
Hi Riley, thanks for your quick response. It appears so that MIPNODE callback is not reached. I put a print statement at the beginning of the callback: (my code is in Kotlin, it's using entirely ...
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Taihao Zhangさんがコメントを作成しました:
Hi, I'm working on a similar problem. Thank you for the detailed clarification of MIPSOL/MIPNODE in your first response. In my case, I wish to do subtour elimination on fractional solutions (via a ...