An Integrated Cumulative Transformation and Feature Fusion Approach for Bearing Degradation Prognostics

Table 3

Evaluation results of cumulative features of the first eight best original features.

Feature	Monotonicity	Trendability	Robustness	Comprehensive indicator
C-WPE2	1.0000	0.9302	0.9895	0.9770
C-WPE5	1.0000	0.9195	0.9929	0.9744
C-WPE8	1.0000	0.9295	0.9900	0.9769
C-SDF	1.0000	0.6228	0.9961	0.8861
C-SMR	1.0000	0.7268	0.9891	0.9159
C-MAV	1.0000	0.7495	0.9882	0.9225
C-RMS	1.0000	0.7797	0.9864	0.9312
C-Skewness	1.0000	0.9559	0.9868	0.9841