Table 3.
Results of the detection model for pathogenic bacteria contamination status on mutton established by spectral data after different preprocessing method.
| Model | Pretreatment method | Accuracy | ||
|---|---|---|---|---|
| Training set | Test set | External validation set | ||
| 1D-CNN | None | 100.00% | 92.86% | 97.62% |
| 1D | 99.98% | 85.71% | 95.24% | |
| 2D | 100.00% | 89.26% | 95.24% | |
| MC | 97.96% | 90.48% | 95.24% | |
| MSC | 99.66% | 86.90% | 90.48% | |
| PLS-DA | None | 92.18% | 90.14% | 89.29% |
| 1D | 89.12% | 85.71% | 83.33% | |
| 2D | 92.85% | 90.48% | 89.29% | |
| MC | 86.73% | 83.33% | 79.76% | |
| MSC | 87.07% | 85.37% | 83.33% | |
| SVM | None | 93.20% | 86.39% | 79.76% |
| 1D | 98.30% | 88.10% | 88.76% | |
| 2D | 99.32% | 91.67% | 90.14% | |
| MC | 83.33% | 77.38% | 74.83% | |
| MSC | 96.94% | 78.57% | 80.95% | |