Table 2.
Summary of the Feature Number and the Classification Accuracy Using Either All Features or Features After Correlation-Based Feature Selection for Each Group Pair
| NC-SMC | NC-EMCI | NC-LMCI | NC-EMCI+LMCI | NC-AD | |
|---|---|---|---|---|---|
| All features | |||||
| Feature no. | 585 | 585 | 585 | 585 | 585 |
| Accuracy | 40.38% | 62.00% | 45.45% | 67.00% | 44.12% |
| Specificity | 42.31% | 64.00% | 36.36% | 52.00% | 35.29% |
| Sensitivity | 38.46% | 60.00% | 54.55% | 82.00% | 52.94% |
| Features after CFS | |||||
| Feature no. | 22 | 8 | 5 | 30 | 11 |
| Accuracy | 92.31% | 80.00% | 80.68% | 92.00% | 94.12% |
| Specificity | 96.15% | 76.00% | 79.55% | 90.00% | 94.12% |
| Sensitivity | 88.46% | 84.00% | 81.82% | 94.00% | 94.12% |
CFS, correlation-based feature selection.