Multiscale Permutation Entropy Based Rolling Bearing Fault Diagnosis

Table 2

The outputs of SVM-classifier with feature vector consisting of one PE.

Samples	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 (18), −1 (2)
𝑇61--𝑇80	ORF	−1 (20)	−1 (20)	−1 (16), +1 (4)