Table 3.

Comparative analysis of RMSE and $p$

Network	Independent variable is PD						Independent variable is 1/PD
	Net11		Net12		Net13		Net21		Net22		Net23
	RMSE	$p$	RMSE	$p$	RMSE	$p$	RMSE	$p$	RMSE	$p$	RMSE	$p$
data_1	9.39	0.31	2.86	0.36	1.22	NaN	1.67	$-$0.31	2.85	$-$0.19	0.53	$-$0.22
data_2	10.04	$-$0.30	2.26	$-$0.31	0.80	NaN	2.24	0.11	2.25	$-$0.02	0.80	0.00
data_3	9.27	0.55	3.15	0.56	1.65	NaN	1.76	0.11	3.15	0.32	1.10	0.28
data_4	10.23	$-$0.36	2.09	NaN	0.72	NaN	3.14	$-$0.32	2.08	$-$0.30	0.93	$-$0.30
data_5	2.73	0.69	1.91	0.86	3.53	0.79	1.49	0.88	0.79	0.74	3.37	0.70
data_6	10.11	$-$0.33	2.27	NaN	0.92	NaN	3.63	$-$0.52	2.26	$-$0.39	0.97	$-$0.40
data_7	0.75	0.23	3.08	$-$0.29	0.88	$-$0.74	1.14	0.91	1.79	0.57	0.97	$-$0.40
data_8	1.11	$-$0.82	0.99	0.94	3.72	0.99	1.23	0.89	0.95	0.98	3.69	1.00
data_9	0.00	1.00	1.45	0.12	1.85	0.36	0.00	1.00	1.25	$-$0.22	2.12	0.17
data_10	2.78	0.56	0.00	1.00	1.93	$-$0.27	2.67	0.56	0.00	1.00	2.46	$-$0.30
data_11	1.77	0.07	1.97	0.30	2.05	0.10	1.96	0.18	1.81	0.41	2.40	0.21
data_12	1.95	0.06	2.51	$-$0.20	0.00	1.00	2.45	$-$0.25	2.56	$-$0.16	0.00	1.00
data_13	1.95	$-$0.17	1.51	$-$0.14	2.07	0.84	1.63	$-$0.42	1.20	$-$0.54	2.07	0.91
data_14	1.74	0.08	4.01	$-$0.01	2.11	0.17	2.46	$-$0.18	2.07	0.12	2.34	$-$0.04

Note: NaN in Table 3 occurs when the denominator in the formula of the correlation coefficient is zero, which is meaningless.