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PLSR modeling results based on the SPA feature screening.
| Preprocessing Methods |
Number of Characteristic Bands | Optimal Number of Principal Components | Rc | RMSEc | Rp | RMSEp | RPD |
|---|---|---|---|---|---|---|---|
| X | 20 | 12 | 0.90 | 0.3 | 0.91 | 0.3 | 2.4 |
| 1D + MSC | 16 | 10 | 0.92 | 0.3 | 0.91 | 0.3 | 2.4 |
| 1D + SNV | 7 | 7 | 0.88 | 0.3 | 0.88 | 0.3 | 2.1 |
