Multistep Wind Speed Forecasting Based on Wavelet and Gaussian Processes

Table 2

Comparison of forecast accuracy for mean hourly wind speed.

	Number of forecasting steps (hour)
	1	2	3	4	Average
RMSE (m/s)
Persistence	1.0028	1.5272	1.9233	2.2231	1.6691
MLP	1.0075	1.5697	1.8911	2.1545	1.6557
GP	1.0305	1.4741	1.8219	2.1572	1.6209
W-GP	0.9605	1.2672	1.6041	1.9539	1.4464
MAE (m/s)
Persistence	0.7431	1.1399	1.5271	1.7293	1.2849
MLP	0.7647	1.2168	1.4515	1.7095	1.2856
GP	0.7675	1.1280	1.4200	1.7035	1.2548
W-GP	0.7204	0.9565	1.2093	1.5320	1.1046
MAPE (%)
Persistence	11.0534	16.9723	26.3192	26.7187	20.2659
MLP	11.9014	19.0887	22.3889	27.7471	20.2815
GP	11.2190	17.4187	23.1315	28.4284	20.0494
W-GP	11.2430	14.3263	18.3666	23.9891	16.9812