Table 4 Comparative analysis with respect to competing feature selection / extraction techniques using the same classifier (LDA)
Exp. | Preprocessing | Feature Selection / Extraction | Dimensionality of the resulted feature space | Training (%) | Testing (%) | Execution time (s) |
|---|---|---|---|---|---|---|
8. | Fuzzification | Vec2im – Siam | 1 | 98.69 | 86.64 | 113.736 |
9. | Normalization | Vec2im – Siam | 1 | 90.20 | 80.64 | 113.245 |
10. | Normalization | Wr-FS (best feature) | 1 | 82.84 | 77.91 | 1.991 |
11. | Fuzzification | Wr-FS (best feature) | 1 | 82.84 | 77.91 | 1.953 |
12. | Normalization | Wr-FS (2 first features) | 2 | 90.79 | 82.04 | 3.048 |
13. | Fuzzification | Wr-FS (2 first features) | 2 | 90.79 | 82.04 | 3.161 |
14. | Normalization | Wr-FS (3 first features) | 3 | 92.20 | 82.98 | 4.370 |
15 | Fuzzification | Wr-FS (3 first features) | 3 | 91.24 | 85.81 | 4.788 |
16. | Normalization | Wr-FS (10 first features) | 10 | 92.33 | 84.06 | 17.091 |
17. | Fuzzification | Wr-FS (10 first features) | 10 | 92.03 | 85.93 | 17.214 |
18. | Normalization | ILFS | 39 | 95.44 | 78.44 | 0.307 |
19. | Normalization | InfFS | 13 | 93.91 | 81.94 | 0.063 |
20. | Normalization | Relief-F | 13 | 92.96 | 81.75 | 122.105 |
21. | Normalization | LS | 33 | 95.42 | 78.50 | 158.381 |
22. | Normalization | Fisher | 13 | 93.91 | 81.94 | 0.415 |
23. | Normalization | CFS | 24 | 93.14 | 81.51 | 0.071 |
24. | Normalization | UFSOL | 39 | 95.44 | 78.44 | 312.436 |
25. | Normalization | Lasso | 22 | 93.61 | 82.04 | 14.505 |
26. | Normalization | Chi2 | 33 | 95.44 | 78.48 | 1.113 |
27. | Normalization | mRMR | 26 | 94.70 | 81.24 | 1.060 |
28. | Normalization | FuzCoC | 25 | 94.61 | 81.94 | 1.160 |
29. | Normalization | PCA (1 pr. component) | 1 | 89.69 | 75.64 | 0.144 |
30. | Normalization | PCA (2 pr. components) | 2 | 89.47 | 76.30 | |
31. | Normalization | PCA (3 pr. components) | 3 | 89.48 | 76.32 |