topic How many splits are performed automatically by the decision tree model using JSL? in Discussions

How many splits are performed automatically by the decision tree model using JSL?

lala — Sun, 14 Apr 2024 08:40:16 GMT

For example, the number of splits in the figure is 3
How to script this split number 3 to a variable?

dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
p = Partition(
	Y( :weight ),
	X( :age, :sex, :height ),
	Validation Portion( 0.3 ),
	Split History( 1 ),
	Informative Missing( 1 )
);
p << go;
splitCount = p << GetProperty( "Tree Split Count" );//??

Thanks!

回复： How many splits are performed automatically by the decision tree model using JSL?

lala — Sun, 14 Apr 2024 09:16:21 GMT

ss = Report( p )["Split History", Text Edit Box( 2 )];//??
ss = Report( p )["Split History", FrameBox( 1 )];//??

NOT LINE

Re: How many splits are performed automatically by the decision tree model using JSL?

jthi — Sun, 14 Apr 2024 14:14:41 GMT

You can get the count from the table box

Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Boston Housing.jmp");
partition = dt << Partition(
	Y(:mvalue),
	X(
		:crim, :zn, :indus, :chas, :nox, :rooms, :age, :distance, :radial, :tax,
		:pt, :b, :lstat
	),
	Validation Portion(0.3)
);
partition << go;

splitcount = (Report(partition)[Table Box(1), Number Col Box("Number of Splits")] << get)[1];