Table 3 The statistic results of THz spectra without and with derivative pretreatments by using discriminate analysis.
Data pretreatment | Numbers of misclassified transgenic rice and its parent in calibration set | Numbers of misclassified transgenic rice and its parent in validation set | Accuracy in calibration set (%) | Accuracy in validation set (%) |
|---|---|---|---|---|
no | 11, 7 | 4, 2 | 85.4 | 85.0 |
1st derivative | 9, 4 | 4, 2 | 89.4 | 85.0 |
2st derivative | 9, 4 | 4, 3 | 89.4 | 82.5 |
