Table 1 Prediction error table of random forest algorithm.
From: The application of THz-TDS in the characterization of Bayan Obo magnetite ore composition
Sample type | Optical parameters | R2 | MSE (%2) | MAE (%) |
|---|---|---|---|---|
FeS2-Fe3O4 | Absorption coefficient | 0.9478 | 0.2163 | 0.3477 |
Refractive index | 0.3310 | 1.7472 | 1.1764 | |
Fe2O3-Fe3O4 | Absorption coefficient | 0.9509 | 0.3928 | 0.4636 |
Refractive index | 0.5957 | 1.0559 | 0.8455 | |
FeS2-Fe2O3-Fe3O4 | Absorption coefficient | 0.9494 | 0.1439 | 0.2682 |
Refractive index | 0.6898 | 1.1563 | 0.9318 |
