A Fault Diagnosis Method of Rolling Mill Bearing at Low Frequency and Overload Condition Based on Integration of EEMD and GA-DBN

Table 3

The performance parameters of the model.

Structure	Model	The root-mean-square errors
Two hidden layers	DBN	0.0730
Three hidden layers	DBN	0.0283
Four hidden layers	DBN	0.0499
Two hidden layers	GA-DBN	0.0897
Three hidden layers	GA-DBN	0.0493
Four hidden layers	GA-DBN	0.0641