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Table 5 RRS based combined analysis for emotion classification (subject independent validation)

From: Classification of emotional states from electrocardiogram signals: a non-linear approach based on hurst

Classifier Neutral Happy Sad Fear Surprise Disgust Average
  (%) (%) (%) (%) (%) (%) (%)
Regression tree 60.37 67.50 66.24 59.12 72.61 63.06 64.82
Bayesian classifier 69.81 60.00 29.24 30.19 29.94 9.55 38.13
KNN (K = 11) 63.52 67.50 64.33 66.04 73.89 64.97 66.71
FKNN (K = 12 60.37 61.88 70.06 62.89 70.06 64.33 64.93