Table 1.
Accuracy and the number of channels of different features and optimizers by 10-fold cross-validation, with the best results in the parathesis.
| Optimizer | Time-domain feature | FC feature | Wavelet feature | |||
|---|---|---|---|---|---|---|
| Accuracy | No. channels | Accuracy | No. channels | Accuracy | No. channels | |
| GA | 84.75 ± 1.44% (86.50%) |
16.80 ± 2.66 (13) | 82.30 ± 1.32% (84.50%) |
23.30 ± 2.91 (24) | 84.50 ± 1.65% (87.00%) |
13.80 ± 2.62 (16) |
| PSO | 83.75 ± 1.18% (86.00%) |
18.10 ± 2.77 (15) | 79.40 ± 1.39% (81.50%) |
23.60 ± 3.95 (17) | 82.00 ± 1.11% (84.50%) |
14.90 ± 1.97 (17) |
| pGAPSO-I | 84.90 ± 1.15% (86.50%) |
10.10 ± 3.67 (8) | 81.25 ± 1.46% (83.50%) |
17.20 ± 4.87 (16) | 82.35 ± 0.75% (83.50%) |
9.90 ± 1.45 (9) |
| pGAPSO-II | 84.65 ± 0.67% (86.00%) |
9.30 ± 2.11 (11) | 81.45 ± 1.46% (83.50%) |
13.50 ± 3.98 (11) | 82.50 ± 1.37% (84.50%) |
9.50 ± 1.43 (11) |
| pGAPSO-III | 84.65 ± 1.06% (86.50%) |
7.40 ± 2.27 (9) | 80.75 ± 2.54% (84.00%) |
19.80 ± 5.05 (15) | 81.85 ± 0.71% (83.00%) |
9.10 ± 2.23 (10) |
| sPSOGA | 83.25 ± 1.59% (85.50%) |
18.60 ± 4.06 (19) | 80.75 ± 1.96% (85.00%) |
20.40 ± 3.37 (19) | 81.45 ± 1.34% (85.00%) |
15.90 ± 2.85 (15) |
| sGAPSO | 84.65 ± 1.42% (86.50%) |
15.70 ± 2.54 (15) | 81.80 ± 1.27% (84.00%) |
24.10 ± 3.03 (21) | 83.20 ± 1.53% (85.00%) |
15.40 ± 2.84 (13) |