Table 3. Comparison of the fitting and prediction performance of the two models.
Prediction |
Fitting part
|
Validation part
|
||
---|---|---|---|---|
error | ARIMA | GRNN-ARIMA | ARIMA | GRNN-ARIMA |
MSE | 0.6521 | 0.4467 | 0.1133 | 0.0958 |
MAE | 0.5688 | 0.4966 | 0.2800 | 0.2555 |
MAPE | 0.0677 | 0.0602 | 0.0361 | 0.0330 |
ARIMA=the autoregressive integrated moving average; GRNN=the generalized regression neural network; MSE=mean square error; MAE=mean absolute error; MAPE=mean absolute percentage error.