D
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Recent activity by D-
Catastrophic Forgetting
AnsweredDoes gurobi suffer from catastrophic forgetting?
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Could different hardware give different results?
AnsweredI am running the same model on two different PCs, and given the same parameters and time limit, one is giving about 0.055% optimality gap, while the other is giving 85% optimality gap and way lower...
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Issue with Scaling the model
AnsweredWhat could be the issue and how can I solve it, when I am having successful matches (solutions) for a small number of input dataset, however when I input a larger dataset that includes the smaller ...
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Presolve
AnsweredWhat does Presolve exactly do?
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Continuing optimization...
AnsweredWhat does it mean when I see this in the log for a while "Continuing optimization... ", even though I used the parameter: model.Params.OutputFlag = 1, to get detailed information during the optimzi...
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Running consecutive optimizations on the same model
AnsweredWhat exactly happens when I construct a model, run an optimization, then change the parameters, and run the optimization again? Does the second run learn from the first run and start where it left ...
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quicksum() and sum()
AnsweredIs there a difference between suing quicksum() and sum()? would it affect the results? or computational time? or intermediate results if a time limit was added?
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Local optima
AnsweredI am running a MIP problem. I am using a set of inputs and the code converges and I get 27 feasible solutions (which are optimal matches) that would reduce the objective function, although I was ex...
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How to print solution with variable names
Awaiting user inputI used model.x, to save the variables and print them, but this doesn't include variable names. Also, I need to only print variables>0. And I have too many variables in the magnitude of 100K, so I...
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deleting variables - example
Awaiting user inputThe example in the documentation that is used for deleting variables, doesn't make a lot of sense to me. What are we saving in error? Does it update the model automatically Example usage:int first...