Multiscale Permutation Entropy Based Rolling Bearing Fault Diagnosis

Table 1

The SVM-classifier outputs of testing data with feature vector refined by LS.

Testing data	Fault type	SVM1	SVM2	SVM3
𝑇1--𝑇20	NORM	+1 (20)	—	—
𝑇21--𝑇40	IRF	−1 (20)	+1 (20)	—
𝑇41--𝑇60	REF	−1 (20)	−1 (20)	+1 (20)
𝑇61--𝑇80	ORF	−1 (20)	−1 (20)	−1 (20)