Native pointer of OpenCV structure

When true, the inverse split rule is used (i.e. left and right branches are exchanged in the expressions below)

Pointer to the next split in the node split list.

The threshold value in case of split on an ordered variable. The rule is: if var_value < c then next_node<-left else next_node<-right

Used internally by the training algorithm.

The split quality, a positive number. It is used to choose the best primary split, then to choose and sort the surrogate splits. After the tree is constructed, it is also used to compute variable importance.

Bit array indicating the value subset in case of split on a categorical variable. The rule is: if var_value in subset then next_node<-left else next_node<-right

Index of the variable used in the split