Table 4: Results for the models using the different IVS for φ’ prediction.
N. Regression ANN
R2 MAD RMSE RMSE
1 0.968±0.004 0.521±0.020 1.002±0.106 0.672±0.195
2 0.869±0.012 1.162±0.043 2.019±0.154 1.970±0.502
3 0.965±0.001 0.600±0.021 1.051±0.068 0.807±0.092
4 0.952±0.002 0.776±0.019 1.226±0.071 2.290±0.303