What's the parameter “number of prepruning alternatives”of Random Tree for?
What's the parameter “number of prepruning alternatives”of Random Tree for? the help explained as “ As prepruning runs parallel to the tree generation process, it may prevent splitting at certain nodes when splitting at that node does not add to the discriminative power of the entire tree. In such a case alternative nodes are tried for splitting. This parameter adjusts the number of alternative nodes tried for splitting when split is prevented by prepruning at a certain node. ”，I don't get it，please explain further or give me a example