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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
  1. Classification performance based on 12 features for (a) subject specific scheme, (b) subject independent scheme without feature normalization, (c) subject independent scheme with feature normalization