Forecasting of Chinese E-Commerce Sales: An Empirical Comparison of ARIMA, Nonlinear Autoregressive Neural Network, and a Combined ARIMA-NARNN Model

Table 2

Average of the MRE and RMSE for 60 e-commerce products of fitting and prediction.

Model	Fitting error		Prediction error
	MRE	RMSE	MRE	RMSE
ARIMA	0.0998	28.3451	0.1389	31.8082
NARNN	0.0879	19.1893	0.1016	25.5668
ARIMA-NARNN	0.0703	12.9549	0.09012	23.2321