Table 5 Confusion matrices based on 12 features
From: Lying position classification based on ECG waveform and random forest during sleep in healthy people
Output position | Target position | |||
|---|---|---|---|---|
Left | Supine | Right | Sum | |
(a) Subject specific scheme | ||||
Left | 1868 | 39 | 7 | 1914 |
Supine | 8 | 603 | 9 | 620 |
Right | 14 | 15 | 1336 | 1365 |
Sum | 1890 | 657 | 1352 | 3899 |
(b) Subject independent scheme without feature normalization | ||||
Left | 1492 | 458 | 247 | 2197 |
Supine | 716 | 203 | 1068 | 1987 |
Right | 79 | 166 | 378 | 623 |
Sum | 2287 | 827 | 1693 | 4807 |
(c) Subject independent scheme with feature normalization | ||||
Left | 1757 | 261 | 334 | 2352 |
Supine | 288 | 377 | 459 | 1124 |
Right | 312 | 176 | 892 | 1380 |
Sum | 2357 | 814 | 1685 | 4856 |