Table 3.

Machine classification results: suicidal ideation.

	Classifier
Feature		NB	DT	SVM	RF
Set1	P	0.514	0.464	0.657	0.587
	R	0.731	0.410	0.564	0.474
	F	0.603	0.435	0.607	0.525
Set2	P	0.491	0.397	0.652	0.589
	R	0.705	0.372	0.577	0.423
	F	0.579	0.384	0.612	0.493
Set3	P	0.505	0.530	0.647	0.614
	R	0.705	0.449	0.564	0.449
	F	0.588	0.486	0.603	0.519
Combined	P	0.496	0.447	0.551	0.644
	R	0.718	0.487	0.692	0.744
	F	0.586	0.466	0.614	0.690
PCA	P	0.400	0.446	0.441	0.438
(combined)	R	0.590	0.526	0.385	0.628
	F	0.477	0.482	0.411	0.516