Table 4 The confusion matrices use the area feature, PCA and KPCA approaches to classify different gaits
| Â | Area feature | PCA | KPCA | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Â | Non-PD | Drug-Off | Drug-On | Non-PD | Drug-Off | Drug-On | Non-PD | Drug-Off | Drug-On |
Non-PD | 9 | 0 | 3 | 10 | 1 | 1 | 10 | 0 | 2 |
Drug-Off | 1 | 8 | 3 | 2 | 7 | 3 | 2 | 10 | 0 |
Drug-On | 6 | 5 | 1 | 3 | 1 | 8 | 2 | 1 | 9 |
Predicted/actual | 9/12 | 8/12 | 1/12 | 10/12 | 7/12 | 8/12 | 10/12 | 10/12 | 9/12 |
Accuracy | 75% | 66.67% | 8.33% | 83.33% | 58.33% | 66.67% | 83.33% | 83.33% | 75% |
Average accuracy | 50.16% | Â | Â | 69.44% | Â | Â | 80.51% | Â | Â |