A Novel Classification Method for Flutter Signals Based on the CNN and STFT

Table 3

Model validation.

	Dataset 1	Dataset 2
Training set loss	0.018562	0.016996
Flutter test set loss	0.008938	0.003387
No-flutter test set loss	0.005237	0.091222
Training set accuracy rate	100%	100%
Flutter test set accuracy rate	97.51%	98.60%
No-flutter test set accuracy rate	90.52%	95.5%

Dataset 1 is a 3D stereoscopic time-frequency diagram dataset. Dataset 2 is a top view time-frequency diagram dataset.