Feature Extraction Method Based on Sparse Autoencoder for Air Traffic Management System Security Situation Awareness

Table 4

Comparison of feature extraction time and classification time for each model.

Model	Feature extraction time (s)	Classification time (s)
PCA	0.120	0.010
AE	2.390	0.040
SAE	0.920	0.003
DRSAE	5.800	0.005