Research Article
ECG-Based Subject Identification Using Statistical Features and Random Forest
Table 1
Direct approach classification results using 290 subjects of the PTB dataset with segment lengths of 1, 3, 5, 7, 10, and 15 sec.
| Lead | 1 second | 3 seconds | 5 seconds | 7 seconds | 10 seconds | 15 seconds | Avg. Acc. | Avg. Sen. | Avg. Spe. | Avg. Acc. | Avg. Sen. | Avg. Spe. | Avg. Acc. | Avg. Sen. | Avg. Spe. | Avg. Acc. | Avg. Sen. | Avg. Spe. | Avg. Acc. | Avg. Sen. | Avg. Spe. | Avg. Acc. | Avg. Sen. | Avg. Spe. |
| I | 78.22 | 76.42 | 99.92 | 85.52 | 83.51 | 99.95 | 88.7 | 86.96 | 99.96 | 90.36 | 89.14 | 99.97 | 90.15 | 86.67 | 99.97 | 92.59 | 90.23 | 99.97 | II | 75.47 | 73.27 | 99.92 | 83.82 | 81.08 | 99.94 | 84.38 | 81.66 | 99.95 | 87.2 | 85.26 | 99.96 | 86.37 | 84.11 | 99.95 | 86.42 | 83.68 | 99.95 | III | 73.67 | 72.39 | 99.91 | 82.32 | 80.3 | 99.94 | 84.6 | 82.6 | 99.95 | 87.2 | 84.64 | 99.96 | 84.88 | 81.93 | 99.95 | 86.42 | 83.28 | 99.95 | aVR | 78.81 | 76.23 | 99.93 | 84.36 | 81.26 | 99.95 | 86.09 | 83.94 | 99.95 | 87.84 | 86.07 | 99.96 | 89.81 | 87.21 | 99.96 | 87.3 | 83.05 | 99.96 | aVL | 76.72 | 75.11 | 99.92 | 84.59 | 83.43 | 99.95 | 88.09 | 86.56 | 99.96 | 90.52 | 89.91 | 99.97 | 89.35 | 86.84 | 99.96 | 89.77 | 87.07 | 99.96 | aVF | 75.3 | 73.14 | 99.91 | 82.15 | 79.91 | 99.94 | 83.16 | 80.36 | 99.94 | 85.39 | 82.69 | 99.95 | 85.91 | 83.19 | 99.95 | 85.19 | 82.47 | 99.95 | V1 | 84.53 | 82.59 | 99.95 | 91.13 | 89.58 | 99.97 | 92.96 | 91.17 | 99.98 | 93.44 | 90.86 | 99.98 | 94.5 | 91.81 | 99.98 | 92.77 | 89.54 | 99.97 | V2 | 87.3 | 86.07 | 99.96 | 92.49 | 91.35 | 99.97 | 95.24 | 94.3 | 99.98 | 95.42 | 93.69 | 99.98 | 94.16 | 91.44 | 99.98 | 95.41 | 93.45 | 99.98 | V3 | 89.19 | 87.98 | 99.96 | 94.56 | 93.65 | 99.98 | 95.68 | 94.34 | 99.99 | 96.29 | 96.1 | 99.99 | 95.88 | 94.48 | 99.99 | 95.59 | 94.02 | 99.98 | V4 | 89.61 | 88.52 | 99.96 | 93.73 | 93.13 | 99.98 | 94.74 | 94.22 | 99.98 | 96.21 | 95.48 | 99.99 | 95.42 | 93.42 | 99.98 | 95.94 | 94.08 | 99.99 | V5 | 87.27 | 85.84 | 99.96 | 92.23 | 91.38 | 99.97 | 92.69 | 92.39 | 99.97 | 94.31 | 93.55 | 99.98 | 94.04 | 93.05 | 99.98 | 93.3 | 91.38 | 99.98 | V6 | 84.69 | 83.57 | 99.95 | 89.46 | 88.04 | 99.96 | 90.86 | 89.86 | 99.97 | 92.58 | 91.76 | 99.97 | 92.67 | 90.52 | 99.97 | 92.59 | 90.52 | 99.97 | Vx | 88.17 | 86.84 | 99.96 | 92.03 | 90.94 | 99.97 | 93.8 | 92.64 | 99.98 | 93.29 | 91.45 | 99.98 | 93.59 | 91.26 | 99.98 | 93.12 | 91.03 | 99.98 | Vy | 80.75 | 79.13 | 99.93 | 86.62 | 85.58 | 99.95 | 87.76 | 86.29 | 99.96 | 90.36 | 89.24 | 99.97 | 89.46 | 87.24 | 99.96 | 86.42 | 83.16 | 99.95 | Vz | 87.81 | 86.28 | 99.96 | 92.73 | 91.72 | 99.97 | 93.85 | 93.43 | 99.98 | 94.63 | 94.1 | 99.98 | 94.04 | 92.18 | 99.98 | 94.18 | 92.7 | 99.98 |
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