※ 引述《wazowski (ludan)》之铭言：
: ※ 引述《Yyh (我爱批踢踢)》之铭言：
: By the way,
: is anybody running into the same problem that
: construction of decision tree with the 40-value attribute takes an
: incredibly large amount of CPU time? (I'm using rpart)
: It's been several hours and my machine is still desperately
: building the tree :(
I'm using tree.
The running time seems ok?
system.time( tree(V55 ~., covtype.train.frame));
[1] 0.32 0.07 0.38 0.00 0.00