Metacost cost matrix optimize

Hilal

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?

MartinLiebig

Hi,

i would recommend to use breakpoints to figure out at what stage the examples are missing.

Best,

Martin

Hilal

thank u @mschmitz and How is metacost- cost matrix optimize?