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how to get the improve value？ #59

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A-Pai opened this issue Feb 23, 2024 · 1 comment
Open

how to get the improve value？ #59

A-Pai opened this issue Feb 23, 2024 · 1 comment
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@A-Pai
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A-Pai commented Feb 23, 2024

https://cran.r-project.org/web/packages/rpart/vignettes/longintro.pdf

p20：
image

it is said in p22：
image

I know the default impurity index is gini，but I can not get to know exactly how to calculate it
@A-Pai
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A-Pai commented Feb 23, 2024

See p58

image

@bethatkinson bethatkinson added the help wanted Extra attention is needed label Jul 12, 2024
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@A-Pai @bethatkinson