Screw Remaining Life Prediction Based on Quantum Genetic Algorithm and Support Vector Machine

Table 2

Accumulation of the correlation coefficients between sensitive features and degradation cycle.

Accumulation of the correlation coefficients	The first	The first five	The first ten	The first fifteen	The first nineteen
Isomap	0.7314	2.1017	2.9849	3.7198	3.9438
PCA	0.7029	1.8792	2.6720	3.2285	3.6775