Table 5.

MAEs and RMSEs of machine learning models and Atlanta FED’s GDPNow for successive nowcasting horizons between 2011Q3 and 2018Q4

	RMSE				MAE
	BDT	RF	GBM	GDPNow	BDT	RF	GBM	GDPNow
Fourth prediction	0.090	0.089	0.108	0.090	0.226	0.223	0.242	0.259
Fifth prediction	0.078	0.080	0.088	0.058	0.223	0.226	0.227	0.213
Sixth prediction	0.064	0.067	0.074	0.041	0.188	0.198	0.212	0.154
Average	0.077	0.078	0.090	0.063	0.212	0.216	0.227	0.208

For abbreviations see Table 1. Note that the machine learning models are estimated using a rolling window