Intelligent Diagnosis of Bogie Traction Seat Based on PCA-OVO and SVM Optimized by Modified Arithmetic Optimization Algorithm

Table 9

Contribution rate of the principal component.

	The principal components	Contribution rate (%)	Cumulative contribution rate (%)
Time domain	1	57.742	57.742
	2	22.853	80.599
	3	16.371	96.969
	4	2.766	99.734
	5	0.156	99.890
	6	0.062	99.952
Frequency domain	1	76.875	76.875
	2	18.282	95.157
	3	4.480	99.638
	4	0.188	99.826
	5	0.174	99.999
Time-frequency domain	1	76.875	76.876
	2	22.348	96.348
	3	3.652	100.000