question: returns the number of features label attribute excluded . concode_field_sep double[] features concode_elem_sep int classLabel concode_elem_sep Instance inst concode_elem_sep int id concode_elem_sep boolean isOutiler concode_field_sep void setOutiler concode_elem_sep double[] getFeatures concode_elem_sep void setId concode_elem_sep int getId concode_elem_sep String toString concode_elem_sep Instance getInstance concode_elem_sep boolean isOutiler concode_elem_sep int getClassLabel
target: int function ( ) { return this . features . length - 1 ; }