Table 2 The SVM model of results after band selection of absorption coefficient spectrum
From: Identification of different parts of Panax notoginseng based on terahertz spectroscopy
Kernel function type | Pretreatment type | Parameter | Training accuracy / % | Verification accuracy / % | Number of test sets | Prediction accuracy / % |
|---|---|---|---|---|---|---|
LIN | No | c = 0.46415 | 98.76 | 95.27 | 134 | 98.50 |
Baseline correction | c = 3.1622 | 99.50 | 97.26 | 134 | 99.25 | |
MSC | c = 0.4641 | 92.04 | 84.83 | 134 | 97.01 | |
Normalization | c = 3.1622 | 44.30 | 44.03 | 134 | 25 | |
RBF | No | c = 3.1622 g = 0.01 | 100 | 60 | 134 | 92.53 |
Baseline correction | c = 21.5443 g = 0.01 | 100 | 68.65 | 134 | 100 | |
MSC | c = 21.5443 g = 0.0681 | 99.75 | 85.32 | 134 | 97.01 | |
Normalization | c = 21.5443 g = 146.7799 | 44.03 | 44.28 | 134 | 25 |