Marika Karbstein
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Gurobi Staff
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Marika Karbsteinによる最近のアクティビティ-
Did you check the page for more details? It also links to How do I get support as an Academic user? – Gurobi Help Center which includes this: If you still continue to have a license or installation...
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Thanks for the additional information.Please note that the Matrix Python API is especially for models already given in matrix notation. It is not efficient to use mVars mixed with term-based notati...
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Did you check the article How do I diagnose a wrong result?A common issue is that the default lower bound in Gurobi is 0.0 and not -INF as in other solvers.
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Hi Jesse, In the log file, you can see that the best bound does not improve after the root node is solved; it stays at the value 6812335.05. Only incumbents improve the gap from 73% to 3%.You could...
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I think there is no direct way. You can get the Indicator constraint via GRBModel.GetGenConstrIndicator Optimization then get the value of the linear expression (lhs) with GRBLinExpr.Value and comp...
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One additional remark: 3. Also I don't know why there are 300 binary variables, because I already removed all binary vanribles I added to reduce calculation time Did you remove the variables comp...
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Hi Yuri, To identify the RHS and the LHS of the constraint, you need to reformulate the constraint such that all variables are on the left-hand side and all constants are on the right-hand side. Re...
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The problem is that you want to add a multilinear term.Please have a look How do I model multilinear terms in Gurobi?
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You defined an unbounded model that is detected to be unbounded in the root relaxation.During presolve a solution is checked in your callback for feasibility. That's why you see the output of lazy ...
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Hi Kasoer, Your timeBigM-constraints are also defined if j is the depot, this makes the model infeasible. Cheers, Marika