Method for Predicting Failure Rate of Airborne Equipment Based on Optimal Combination Model

Table 3

Different model accuracy data.

Accuracy index	Model comparison
	ARIMA	GRNN	EMD-SVM	Combined model
MAE	0.4628	0.7461	0.3167	0.2801
RMSE	1.0984	0.9871	2.0112	0.2803
MAPE	28.09	42.56	15.97	7.01
MSPE	0.3678	0.2453	0.7033	0.1124
NRMSE	0.7098	0.4328	0.5362	0.0722
R^2	0.901	0.899	0.897	0.989
Theil	0.363	0.229	0.105	0.034