Lorenzo Moreschini
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Lorenzo Moreschiniさんの最近のアクティビティ-
Lorenzo Moreschiniさんがコメントを作成しました:
Thank you, I will try to experiment with those parameters.
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Lorenzo Moreschiniさんが投稿を作成しました:
Iteratively apply user cuts before leaving root node
回答済みI need to solve a MILP model that is essentially a Travelling Salesman Problem with additional constraints.As the core model is a TSP, most of the complexity is related to tightening the initial re...
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Lorenzo Moreschiniさんがコメントを作成しました:
In that way I still have to compute the obj function value, is there any shortcut? (a workaround could be to assign the obj function to a single variable and then read its relaxed value...)
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Lorenzo Moreschiniさんが投稿を作成しました:
Get relaxed solution value in callback MIPNODE
回答済みHow do I retrieve the value of the relaxed solution using the Java API when my callback is called in a MIPNODE and CB_MIPNODE_STATUS is OPTIMAL? In the documentation page I see: MIPNODE_OBJBST MI...
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Lorenzo Moreschiniさんがコメントを作成しました:
Found the issue: it seems that Gurobi does not always emit a message in Case B, even if the solution I load is not feasible. I found a bug in the heuristic procedure I use and now Gurobi immediatly...
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Lorenzo Moreschiniさんがコメントを作成しました:
Thank you Jaromił, I still have to try changing the settings you suggested, but there is something not clear to me: suppose that I am setting a MIPStart value for each variable in my the model (I s...
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Lorenzo Moreschiniさんが投稿を作成しました:
User MIP start in Gurobi logs
回答済みWhen I set an initial solution before solving a Gurobi model, I see one of the following three different kind of output inside Gurobi logs. Case A Warning: Completing partial solution with 30107 un...
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Lorenzo Moreschiniさんが投稿を作成しました:
Lazy constraints and cuts in the same model callback
回答済みLet M be the integer programming model I need to implement using Gurobi and let C be a family of cuts I am willing to add dynamically during the resolution.Also, the model M contains an exponential...
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Lorenzo Moreschiniさんがコメントを作成しました:
Hi Jaromił,reading the release notes of version 11.0 it seems that this feature has been added, right? Change the Threads parameter when resuming optimization If an optimization is interrupted (e....
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Lorenzo Moreschiniさんがコメントを作成しました:
Very helpful, thank you!