Table 4.

Comparison of the correlation coefficient of PreDBA with other algorithm combinations in the stacking model.

	SS	Double I	Double II	Double III	MISC	Average
GBRT	0.872	0.792	0.711	0.801	0.762	0.79
AdaR	0.757	0.536	0.501	0.577	0.704	0.62
BagR	0.736	0.554	0.514	0.587	0.694	0.62
GBRT+AdaR	0.874	0.792	0.713	0.783	0.756	0.78
AdaR+BagR	0.772	0.634	0.652	0.602	0.732	0.68
GBRT+BagR	0.904	0.765	0.732	0.795	0.806	0.80
GBRT+AdaR+BagR(PreDBA)	0.940	0.829	0.752	0.843	0.834	0.84