请教高手，下面是R中的help 文档：
## First the user defined functions
cv.rpartXse <- function(form, train, test, ...) {
require(DMwR)
t <- rpartXse(form, train, ...)
p <- predict(t, test)
mse <- mean((p - resp(form, test))^2)
c(nmse = mse/mean((mean(resp(form, train)) - resp(form, test))^2),
mse = mse)
}
results <- experimentalComparison(
c(dataset(Infant.Mortality ~ ., swiss),
dataset(mpg ~ ., mtcars)),
c(variants('cv.rpartXse',se=c(0,0.5,1))),
cvSettings(1,10,1234)
)
我的问题是：results中的dataset是函数吗？我怎么在R的help里面找不到这个函数？非常感谢！
