A Hybrid Model Based on Ensemble Empirical Mode Decomposition and Fruit Fly Optimization Algorithm for Wind Speed Forecasting

Table 9

Bias-variance test of seven models for the mean value in four seasons.

Model	Bias variance
	Bias	Var.
Hybrid model	0.016168	0.000178
EEMD-FOASVR	0.057193	0.051961
EEMD-FOAGRNN	0.099827	0.192708
EEMD-FOARBF	0.063177	0.143495
ARIMA	0.117167	0.244263
Persistence model	0.165100	0.216753