Kernel Local Linear Discriminate Method for Dimensionality Reduction and Its Application in Machinery Fault Diagnosis

Table 6

Comparison of four dimensionality reduction methods for classification.

	Normal	Inner race fault	Ball fault	Outer race fault	Average accuracy
KPCA	1.0	1.0	0.15	1.0	0.7875
NPP	1.0	1.0	0.775	1.0	0.9438
LLD	1.0	1.0	0.90	1.0	0.975
KLLD	1.0	1.0	1.0	1.0	1.0