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Metacost cost matrix optimize

HilalHilal Member Posts: 2 Learner I
Hello, I want to optimize the cost matrix parameter of the metacost operator, my process is as follows:
Dataset-Optimize Grid- Validation- Meta cost- logistic regression

However, I get an error like "the examples set empty" in the logistic regression operator. How should my process be for cost matrix optimization?

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    MartinLiebigMartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,507 RM Data Scientist
    Hi,
    i would recommend to use breakpoints to figure out at what stage the examples are missing.

    Best,
    Martin
    - Sr. Director Data Solutions, Altair RapidMiner -
    Dortmund, Germany
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    HilalHilal Member Posts: 2 Learner I
    thank u @mschmitz and How is metacost- cost matrix optimize?
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