ACO-Initialized Wavelet Neural Network for Vibration Fault Diagnosis of Hydroturbine Generating Unit

Table 4

Error and training time of three methods.

Diagnosing methods	Wavelet neural network	ACO wavelet neural network	ACO-initialized wavelet neural network
Diagnosing error	0.0517	0.0313	0.0093
Training time/s	2.3438	9.3281	0.6094