| WANN | HMM
opt7D
| HMM
opt14D
|
---|
Sensitivity (TP) | 73.1 ± 3.7% | 69.8 ± 20.3% | 86.7 ± 27.2% |
Specificity (TN) | 91.7 ± 4.4% | 88.1 ± 20.9% | 98.6 ± 7.7% |
Detection delay (ΔT) | 3.95 ± 3.38 s | 8.30 ± 15.33 s | -0.68 ± 10.07 s |
Optimality index (O) | 0.756 ± 0.059 | 0.665 ± 0.260 | 0.915 ± 0.302 |
- Using identical wavelet coefficient features, the performance of the unsupervised HMM seizure detector (HMMopt7D) did not show any statistically significant improvement over the supervised approach (WANN). However, when the rate of change of wavelet information was included in the feature space, the optimality index of HMMopt14D was significantly better than both WANN and HMMopt7D.