TABLE 1.

The correlation coefficient (r) and the significance (p) between the features and the target.

			δ	θ	α	β	γ	All
PDC	L	r	−0.31	−0.35	−0.36	−0.41	−0.37	−0.39
		p	6.58e-76	2.96e-98	2.68e-103	1.40e-133	1.62e-110	5.25e-124
	C	r	0.32	0.32	0.32	0.34	0.33	0.34
		p	3.41e-79	1.63e-82	1.06e-81	1.36e-93	1.02e-83	3.93e-90
	D	r	0.26	0.26	0.27	0.31	0.28	0.30
		p	5.95e-54	1.14e-52	6.58e-56	6.12e-76	1.80e-62	1.59e-69
DTF	L	r	0.04	0.06	0.05	0.05	0.03	0.04
		p	1.21e-2	1.23e-3	6.2e-3	4.42e-3	8.09e-2	2.80e-2
	C	r	0.28	0.28	0.26	0.27	0.36	0.36
		p	4.91e-61	4.35e-59	1.50e-53	1.31e-56	2.61e-105	4.01e-103
	D	r	0.29	0.28	0.28	0.31	0.36	0.36
		p	2.00e-64	4.75e-60	8.49e-61	8.66e-76	1.80e-103	3.25e-101

Bold values indicate the best.