Table 6 Classification performance based on 12 features
From: Lying position classification based on ECG waveform and random forest during sleep in healthy people
Left | Supine | Right | Overall | κ statistic |
|---|---|---|---|---|
(a) Subject specific scheme | ||||
98.71% ± 2.03% | 72.22% ± 23.41% | 98.46% ± 2.34% | 97.17% ± 2.74% | 0.9121 ± 0.1010 |
(b) Subject independent scheme without feature normalization | ||||
55.22% ± 43.25% | 38.38% ± 41.36% | 24.21% ± 37.28% | 44.73% ± 31.61% | 0.0866 ± 0.2180 |
(c) Subject independent scheme with feature normalization | ||||
75.04% ± 24.10% | 46.40% ± 35.61% | 44.34% ± 38.14% | 63.87% ± 16.32% | 0.3171 ± 0.1755 |