Free Access
Table IV
Solid wood – PLS Model results of test validation. N: number of sample. M: mean. SD: standard deviation. SEP: standard error of prediction. RPD: ratio performance to deviation.
| NIR surface | Properties | N | Outliers | M | SD | SEP | r 2 | RPD |
|---|---|---|---|---|---|---|---|---|
| LR | Radial shrinkage | 100 | 1 | 3.21 | 0.65 | 0.37 | 0.67 | 1.8 |
| Tangential shrinkage | 100 | 3 | 5.68 | 1.27 | 0.60 | 0.78 | 2.1 | |
| Fibre saturation point | 100 | 0 | 20.48 | 1.95 | 0.84 | 0.84 | 2.3 | |
| TR | Radial shrinkage | 100 | 3 | 3.21 | 0.65 | 0.36 | 0.72 | 1.8 |
| Tangential shrinkage | 100 | 4 | 5.64 | 1.27 | 0.52 | 0.83 | 2.4 | |
| Fibre saturation point | 100 | 5 | 20.58 | 1.91 | 0.68 | 0.87 | 2.8 | |