rss

Calculate the RSS of a decision tree model.

rss(x, ...)

Arguments

x

A fitted rpart, gbm, or randomForest model

...

extra arguments

Value

The Residuals Sums of Squares (RSS) for the models `rpart`, `gbm.step`, and `randomForest`.

Note

when using the `caret` package, be sure to select `model$finalModel` when entering it into the `rss` function. Also note that the RSS only makes sense for continuous outcomes.

Examples

## Not run: ------------------------------------
# library(rpart)
# 
# fit.rpart <- rpart(Kyphosis ~ Age + Number + Start, data = kyphosis)
# 
# rss(fit.rpart)
## ---------------------------------------------