TABLE 1.

Results from five-fold cross-validation.

Fold	Training		Testing
	r	MSE	r	MSE
1	0.9752	0.0201	0.5290	0.2778
2	0.9775	0.0181	0.5680	0.2729
3	0.9755	0.0197	0.5096	0.3035
4	0.9786	0.0173	0.4179	0.3280
5	0.9775	0.0182	0.5714	0.2663
avg	0.9769	0.0187	0.5192	0.2897
sd	0.0015	0.0012	0.0624	0.0256

MSE, mean squared error.