A Novel Fault Diagnosis Method for Denoising Autoencoder Assisted by Digital Twin

Table 3

Hyperparameter settings for stacked NDAE methods.

Hyperparameters	Value	Hyperparameters	Value
The size of the first hidden layer	450	Kernel width	1.2
The size of the third hidden layer	100	Sparse penalty factor	5
Number of iterations	60	Initial learning rate	0.01
Weight decay coefficient	0.004	Decay factor	1.1
Noise level	0.08	Momentum	0.8