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Table 5 Summary of the univariate models’ performance

From: Stochastic forecasting of project streams for construction project portfolio management

Model Set  RMSE MAE
Holt winter (additive seasonal) Training set 8.10 6.58
Test set 11.73 8.99
ARMA(8,8) Training set 7.93 6.28
Test set 8.82 6.84
ARIMA(0,0,1) (0,0,2) [12] Training set 9.28 7.46
Test set 10.22 8.15