Table 4.
Results of detection models for pathogenic bacteria contamination status on mutton established by characteristic wavelengths extracted by different methods.
| Model | Method of feature band screening | Number of bands | Accuracy | ||
|---|---|---|---|---|---|
| Training set | Test set | External validation set | |||
| 1D-CNN | CARS | 33 | 96.94% | 85.71% | 92.86% |
| GA | 35 | 98.64% | 84.52% | 95.24% | |
| SPA | 15 | 94.56% | 75.00% | 95.24% | |
| PLS-DA | CARS | 33 | 86.73% | 82.14% | 83.33% |
| GA | 35 | 89.12% | 86.90% | 92.86% | |
| SPA | 15 | 90.14% | 82.14% | 92.86% | |
| SVM | CARS | 33 | 98.98% | 90.48% | 90.48% |
| GA | 35 | 94.22% | 89.29% | 95.24% | |
| SPA | 15 | 93.57% | 86.90% | 92.86% | |