Table 2 Prediction effects of three methods
Methods | Adopted wavelengths (nm) | N | F | SECV | RP,CV |
|---|---|---|---|---|---|
PLS | 780–2498 | 860 | 15 | 1.423 | 0.935 |
MW-PLS | 1504–1820 | 159 | 10 | 0.804 | 0.979 |
OPWC-PLS | 1410, 1534, 1536, 1538, 1542, 1676, 1678, 1698, 1732, 1734, 1738, 1742, 1744, 1746, 1750, 1870, 2128, 2132, 2218, 2220, 2222, 2228, 2254, 2258, 2306, 2310, 2318, 2340 | 28 | 7 | 0.813 | 0.978 |