Inconsistencies in the rpart.object help file?
splits, a matrix of split labels
This is a mistake in the help file.
I'm also not sure I understand what the yval2 columns signify (even
that I read what it says in the help). For the kyphosis data set y is a factor with two levels. For the first split yval2 contains (1, 64, 17, .7901235, .2098765); this node is classified into group 1, it contains 64 group 1 and 17 group 2 observations, pr(group 1) = .79 and pr(group 2) = .21. Note that if the model specifies priors that the last two values will not be 64/81 and 17/81. Terry T.