Research on Risk Assessment and Prediction of RMB Internationalization Based on the PCA-SA-BPNN Model

Table 4

Explanation degree of principal component variance.

Principal component	Eigenvalue	Variance explanation rate (%)	Cumulative variance explanation rate (%)
1	10.01	52.685	52.685
2	1.836	9.661	62.346
3	1.595	8.396	70.742
4	1.478	7.777	78.519
5	1.013	5.33	83.849
6	0.829	4.365	88.214
7	0.626	3.295	91.509
8	0.449	2.363	93.872
9	0.365	1.922	95.794
10	0.295	1.553	97.347
11	0.198	1.045	98.392
12	0.145	0.761	99.153
13	0.05	0.262	99.414
14	0.048	0.251	99.666
15	0.029	0.151	99.817
16	0.017	0.09	99.907
17	0.011	0.059	99.966
18	0.004	0.021	99.987
19	0.003	0.013	100