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rpart2
2001 Aug 02
1
Missing value in Rpart
Hi, all
Our understanding of how classification trees in Rpart treat missing is
that if the variable is ordinal(continous), Rpart, by default, imputes a
value for missing. How do we do the classification tree and tell Rpart not
to impute. That is, what command is used to turn off the imputation.
Also, if we do get true missing, how does classification tree analysis in
Rpart treat missing when