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. 2021 Aug 30;21(17):5830. doi: 10.3390/s21175830

Figure 7.

Figure 7

Anomaly detection model on feature space mapping resulting from DAE by means OC-SVM: (a) initial anomaly model representation. The anomaly model is trained employing data from He condition and F1 condition; (b) evaluation of the fault scenario F2, showing a high overlap between known and unknown classes.