Inhibits the growth of the decision tree. Decreasing the value increases the likelihood of a split, while increasing the ...

Inhibits the growth of the decision tree. Decreasing the value increases the likelihood of a split, while increasing the value decreases the likelihood. The default value is based on the number of attributes for a given model: the default is 0.5 if there is 1 to 9 attributes: the default is 0.9 if there are 10 to 99 attributes; and the default is 0.99 if there are 100 or more attributes.