Nonlinear Model for Condition Monitoring and Fault Detection Based on Nonlocal Kernel Orthogonal Preserving Embedding

Figure 4

Three-dimensional representation based on the three features extracted from the training and testing samples by (a) KPCA, (b) KONPE, (c) NLOPE, (d) KGLPP, and (e) NLKOPE.

(a)

(b)

(c)

(d)

(e)