Research Article
Random Forest versus Support Vector Machine Models’ Applicability for Predicting Beam Shear Strength
Table 3
The prediction results for the investigated nine input combinations over the training and testing phases for the proposed SVM model.
| Input combinations | R2 | RMSE (kN) | MAE (kN) | MAPE | Nash | MD |
| Training phase | M1 | 0.47 | 227.60 | 132.75 | 0.66 | 0.47 | 0.57 | M2 | 0.63 | 209.86 | 75.61 | 0.27 | 0.55 | 0.76 | M3 | 0.67 | 200.84 | 72.76 | 0.27 | 0.59 | 0.77 | M4 | 0.77 | 174.56 | 60.52 | 0.28 | 0.68 | 0.80 | M5 | 0.73 | 178.07 | 53.14 | 0.20 | 0.68 | 0.84 | M6 | 0.76 | 167.05 | 43.83 | 0.18 | 0.72 | 0.87 | M7 | 0.75 | 169.92 | 44.85 | 0.17 | 0.71 | 0.87 | M8 | 0.74 | 170.11 | 45.06 | 0.18 | 0.71 | 0.87 | M9 | 0.74 | 171.37 | 45.11 | 0.18 | 0.70 | 0.87 |
| Testing phase | M1 | 0.59 | 226.27 | 106.65 | 0.49 | 0.47 | 0.62 | M2 | 0.64 | 197.63 | 78.41 | 0.36 | 0.59 | 0.74 | M3 | 0.72 | 187.49 | 72.20 | 0.37 | 0.63 | 0.76 | M4 | 0.75 | 177.63 | 68.11 | 0.37 | 0.67 | 0.77 | M5 | 0.77 | 174.56 | 60.52 | 0.28 | 0.68 | 0.80 | M6 | 0.77 | 167.65 | 50.01 | 0.25 | 0.71 | 0.83 | M7 | 0.78 | 166.61 | 49.59 | 0.29 | 0.71 | 0.84 | M8 | 0.79 | 163.06 | 50.03 | 0.30 | 0.72 | 0.84 | M9 | 0.79 | 163.17 | 51.20 | 0.34 | 0.72 | 0.83 |
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