A Financial Risk Early Warning of Listed Companies Based on PCA and BP Neural Network

Table 3

Principal components and cumulative variance contribution.

Components	Standard deviation	Proportion of variance	Cumulative proportion (%)
Comp.1	0.1911	0.1685	16.85
Comp.2	0.1832	0.1549	32.34
Comp.3	0.1654	0.1263	44.97
Comp.4	0.1419	0.0929	54.26
Comp.5	0.1393	0.0895	63.21
Comp.6	0.1133	0.0592	69.14
Comp.7	0.0991	0.0453	73.67
Comp.8	0.0919	0.039	77.57
Comp.9	0.0849	0.0333	80.91
Comp.10	0.0748	0.0258	83.48
Comp.11	0.0718	0.0238	85.86
Comp.12	0.0695	0.0223	88.09
Comp.13	0.0656	0.0199	90.08
Comp.14	0.0623	0.0179	91.87
Comp.15	0.052	0.0125	93.12
Comp.16	0.0513	0.0122	94.34
Comp.17	0.0494	0.0113	95.46
Comp.18	0.0465	0.01	96.46
Comp.19	0.0442	0.009	97.37
Comp.20	0.0427	0.0084	98.21
Comp.21	0.0397	0.0073	98.93
Comp.22	0.0316	0.0046	99.40
Comp.23	0.0286	0.0038	99.77
Comp.24	0.0194	0.0017	99.95
Comp.25	0.0083	0.0003	99.98
Comp.26	0.0069	0.0002	100.00