www.emgu.com/wiki
Get the 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

Declaration Syntax
public int[] Subset { get; }Public ReadOnly Property Subset As Integer()
public:
property array<int>^ Subset {
array<int>^ get ();
}Assembly:
Emgu.CV.ML (Module: Emgu.CV.ML) Version: 1.0.0.0 (1.0.0.0)