Research Article
Wavelets and Morphological Operators Based Classification of Epilepsy Risk Levels
Table 13
Performance analysis of twenty patients using Haar wavelet in soft thresholding with SVD, EM, and MEM postclassifiers.
| Parameters | Code converter method before optimization | SVD optimization | With EM optimization | With MEM optimization |
| Heursure soft thresholding | Risk level classification rate (%) | 66.1 | 87.21 | 89.03 | 90.46 | Weighted delay (s) | 2.47 | 1.91 | 2.19 | 2.08 | False alarm rate/set | 11.93 | 9.94 | 4.16 | 4.93 | Performance Index % | 52.82 | 82.64 | 87.88 | 89.82 | Sensitivity | 85.39 | 90.05 | 96.27 | 95.07 | Specificity | 78.28 | 97.16 | 92.76 | 95.4 | Average detection | 78.875 | 93.61 | 94.51 | 95.23 | Relative risk | 1.166 | 0.926 | 1.037 | 0.996 | Quality Value | 13.54 | 20.16 | 20.12 | 20.85 |
| Mini max soft thresholding | Risk level classification rate (%) | 64.63 | 85.22 | 89.48 | 93.97 | Weighted delay (s) | 2.53 | 1.7 | 2.15 | 2.06 | False alarm rate/set | 15.1 | 14.77 | 4.6 | 3.5 | Performance Index % | 44.52 | 79.43 | 88.15 | 93.4 | Sensitivity | 82.31 | 85.25 | 95.4 | 96.71 | Specificity | 76.81 | 100 | 94.08 | 97.26 | Average detection | 78.875 | 92.625 | 94.74 | 96.98 | Relative risk | 1.166 | 0.85 | 1.014 | 0.994 | Quality Value | 12.11 | 19.36 | 20.09 | 22.54 |
| Rig sure soft thresholding | Risk level classification rate (%) | 66.34 | 88.49 | 90.9 | 92.22 | Weighted delay (s) | 2.52 | 1.77 | 2.01 | 2.1 | False alarm rate/set | 13.78 | 11.5 | 5.48 | 4.16 | Performance Index % | 49.11 | 84.18 | 89.93 | 91.25 | Sensitivity | 84.35 | 88.49 | 94.74 | 95.83 | Specificity | 78.23 | 100 | 96.16 | 96.83 | Average detection | 78.875 | 94.45 | 95.45 | 96.33 | Relative risk | 1.166 | 0.88 | 0.992 | 0.989 | Quality Value | 12.91 | 20.44 | 20.32 | 21.42 |
| Sqtwolog soft thresholding | Risk level classification rate (%) | 65.34 | 77.69 | 84.65 | 88.38 | Weighted delay (s) | 2.96 | 2.806 | 2.34 | 2.3 | False alarm rate/set | 6.96 | 1.42 | 4.49 | 2.74 | Performance Index % | 46.89 | 66.58 | 82.12 | 86.87 | Sensitivity | 91.34 | 98.57 | 95.5 | 97.26 | Specificity | 70.82 | 79.11 | 89.15 | 91.12 | Average detection | 78.875 | 88.84 | 92.325 | 94.19 | Relative risk | 1.166 | 1.245 | 1.07 | 1.06 | Quality Value | 13.22 | 17.82 | 18.77 | 20.22 |
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