Table 2.

Evaluation metrics of the three forecasting models: short-term forecast (STF), hybrid forecast (HF), and time delay neural network (TDNN) model for the whole COVID-19 pandemic thus far in Jordan, including before and after the emergence of OMICRON variant.

Model	Number of Learning Days	R 2	RMSE	MAE
STF	5	0.99	0.62	0.37
	10	0.98	0.87	0.52
	15	0.98	1.04	0.65
	20	0.97	1.22	0.75
	25	0.96	1.47	0.88
	30	0.94	1.77	1.04
	35	0.93	2.07	1.19
	40	0.90	2.35	1.33
HF		0.95	1.89	1.09
TDNN		0.97	1.15	0.74