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bethatkinson / rpart

Recursive Partitioning and Regression Trees
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Is there something wrong？--The last split adds little improvement to the apparent error, and increases the cross-validated error. #57

Open A-Pai opened 7 months ago

A-Pai commented 7 months ago

pages 34 of the rpart vignette covers this topic. https://cran.r-project.org/web/packages/rpart/vignettes/longintro.pdf

The last split decreases the cross-validated error. image