Comparison of regression and neural network models. In all cases, the neural network models were better than the regression-based models for predicting LAI.
| Model reference | Building method | Variables | R | SEE |
|---|---|---|---|---|
| Equation 3 | Regression | GRRD_RAT | 0.60 | 1.54 |
| Equation 4 | Regression | GRRD_RAT, IR | 0.62 | 1.51 |
| * | ANN | GREEN | 0.69 | 1.39 |
| * | ANN | NDVI | 0.68 | 1.39 |
| * | ANN | RDIR_RAT | 0.69 | 1.39 |
| Figure 1 | ANN | GREEN, RDIR_RAT | 0.71 | 1.35 |