Table 4.
Comparison on classification performance and the number of involved features for 4 different methods. The last column shows the mean±standard deviation of the feature numbers used in all 91 LOO runs. The bold numbers indicate the best results for the accuracy, sensitivity and specificity, respectively.
| Method | Accuracy (%) | Sensitivity (%) | Specificity (%) | #Features |
|---|---|---|---|---|
| Pearson’s correlation (PC) | 69.23 | 71.11 | 67.39 | 45.1 ± 8.0 |
| Sparse representation (SR) | 71.43 | 71.11 | 71.74 | 60.4 ± 7.9 |
| Low-rank (LR) | 79.12 | 80.00 | 78.26 | 62.5 ± 4.0 |
| Sparse low-rank (SLR) | 89.01 | 86.67 | 91.30 | 72.4 ± 3.3 |