※ 引述《wazowski (ludan)》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 :(
Did you use a small subset or the whole covtype set?