Table 4: GNI forecasting performances of different approaches.

MethodError type
MAERMSEMSEMAPE

Single ANN5.476.8546.9213.26

Combined ANN
 Averaged3.474.7822.848.60
 MAE weighted3.003.7013.687.47
 RMSE weighted2.953.2012.277.39
 MSE weighted2.362.606.775.99

Combined ANN-LIN.REG.
 MAE weighted2.713.6413.306.78
 RMSE weighted2.623.4011.546.60
 MSE weighted2.242.516.295.73

ARIMA13.2623.1224.718.60