topic Re: JSL - Repeats within a platform function in Discussions

JSL - Repeats within a platform function

Joost — Fri, 09 Jun 2023 16:05:05 GMT

Names Default To Here( 1 );

// Create an Example data table
dt = currentdatatable();

// Get the names of the columns in the data table
colNames = dt << get column group( "WLS" );

nIters = 2;

Neural(
	Y( :Type ),
	X(eval(colNames)),
	Validation Method( "KFold", 5 ),
	Set Random Seed( 2 ),
	for( k=1, k <= nIters, k++, Fit( NTanH ( 2 ) ) ),
);

I am trying to fit more than 1 neural model using attached script. If instead of the for-loop I write several times Fit( NTanH(2)) it works fine, but with a for-loop I cannot get it to work. Any suggestins? Thanks!

Re: JSL - Repeats within a platform function

jthi — Mon, 19 Dec 2022 18:47:23 GMT

You could move the Fit(NTanH()) outside the Neural(). Below is example from scripting index:

Modified version from scripting index with for loop:

Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Boston Housing.jmp");
obj = Neural(
	Y(:mvalue),
	X(:crim, :indus, :chas, :nox, :rooms, :age, :distance, :radial),
	Set Random Seed(2)
);

For(i = 1, i <= 2, i++,
	obj << Fit(NTanH(4));	
);

Re: JSL - Repeats within a platform function

Joost — Mon, 19 Dec 2022 22:19:58 GMT

Hi Jarmo, that was an option that I did not try and it is a solution to my problem. Works fine. Thank you!

Re: JSL - Repeats within a platform function

Joost — Thu, 22 Dec 2022 15:59:17 GMT

Hi Jarmo, Below is a working script:

Names Default To Here( 1 );
delete symbols();

dt = current data table();

colNames = dt << get column group("WLs");
exclColnames = dt <<  get excluded columns();
For( i = 1, i <= N Items( exclColnames ), i++,
	Remove From( colNames, As List( Loc( colNames, exclColnames[i] ) ) )
);

rpt = New Window( "Neural of Type", dt <<
	Neural(
		Y( :Type ),
		X( eval ( colNames ) ),
		Informative Missing( 0 ),
		Validation Method( "KFold", 5 ),
		Set Random Seed( 2 ),
		Fit( NTanH( 2 ) ),
		Fit( NTanH( 2 ) ),
		Fit( NTanH( 2 ) )
	)
);
Wait( 0 );
rpt["Neural", Outline Box( 1 ), "Validation", "Type", Table Box( 1 )] <<
Make Combined Data Table;
rpt << Close Window;

However, I want to make the Fit( NTanH(2)) flexibe. The way you demonstrated does not work here, I tried to solve it by next script (leaving out the first part):

obj =Neural(
		Y( :Type ),
		X( eval ( colNames ) ),
		Informative Missing( 0 ),
		Validation Method( "KFold", 5 ),
		Set Random Seed( 2 ),
);
for(i=1, i<=3, i++, obj << Fit( NTanH(2)));

rpt = current window();

Wait( 0 );
rpt["Neural", Outline Box( 1 ), "Validation", "Type", Table Box( 1 )] <<
Make Combined Data Table;
rpt << Close Window;

But now I get the error message: "Cannot subscript Display Box in access or evaluation of 'rpt[ /*###*/"Neural",Outline Box(1),"Validation","Type",Table Box(1)]' , rpt[/*###*/"Neural", Outline Box( 1 ), "Validation", "Type", Table Box( 1 )]". I do not understand why I get this message, because the first script runs well.

Do you have a solution for this problem and can you explain why I have this problem, in order to understand JSL a bit better. Thanks!

Re: JSL - Repeats within a platform function

jthi — Sat, 24 Dec 2022 17:13:22 GMT

The code isn't finding correct references, it could be that changing rpt = Current Window(); to rpt = Current Report() is enough, but I would strongly suggest using the reference you (can) have (in my example obj)

Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Boston Housing.jmp");
obj = Neural(
	Y(:mvalue),
	X(:crim, :indus, :chas, :nox, :rooms, :age, :distance, :radial),
	Set Random Seed(2),
	<< Fit(NTanH(4)),
	<< Fit(NTanH(4)),
	<< Fit(NTanH(4))
);

For(i = 1, i <= 2, i++,
	obj << Fit(NTanH(4));
);

Report(obj)[Outline Box("Neural")][Outline Box("Training")][Table Box(1)] << Make Combined Data Table;

Re: JSL - Repeats within a platform function

Joost — Sat, 24 Dec 2022 11:28:20 GMT

Thanks, Jarmo, that was where I am looking for. Simple line, but hard to figure out for someone new to JSL!