Aero Engine Component Fault Diagnosis Using Multi-Hidden-Layer Extreme Learning Machine with Optimized Structure

Table 1

Performance of all methods on MNIST.

	Training accuracy	Testing accuracy	Training time (second)
DBN	0.994	0.984	38345.4
SDAE	0.989	0.983	26986.6
M-ELM	0.973	0.964	24.6
ELM	0.948	0.934	173.1
OM-ELM	0.979	0.987	8657.3