Fine-Grained Fault Diagnosis Method of Rolling Bearing Combining Multisynchrosqueezing Transform and Sparse Feature Coding Based on Dictionary Learning

Table 2

The results of different feature extraction algorithms based on NMF.

Algorithm	Sh	Feature size	LSVM
			Average accuracy (%)
NMF	—	25	92.63
SFC-DL	0.7	25	98.03
SFC-DL + MRMR	0.7	24	97.55
		23	97.49
		22	97.40
		21	97.24
		15	96.37
		10	93.72