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Table 6 Top 10 features selected by each method and the optimum number selected by Kneedle algorithm (corresponding accuracy)

From: Feature ranking and rank aggregation for automatic sleep stage classification: a comparative study

  ReliefF Fisher Chi2 IG CMIM MRMR-MID MRMR-MIQ Borda RRA
Top 10 features F28 F36 F35 F9 F15 F35 F35 F36 F36
F36 F35 F9 F35 F36 F39 F42 F35 F35
F7 F31 F11 F11 F9 F36 F15 F9 F9
F49 F9 F31 F31 F8 F22 F36 F31 F31
F41 F29 F36 F36 F1 F15 F22 F22 F27
F27 F11 F27 F4 F34 F31 F23 F27 F22
F20 F25 F26 F27 F35 F29 F31 F29 F17
F23 F27 F4 F26 F28 F23 F38 F11 F29
F6 F12 F25 F25 F6 F9 F29 F15 F11
F22 F22 F14 F29 F48 F38 F9 F20 F20
MLFN 7 (0.75) 5 (0.76) 7 (0.76) 7 (0.76) 3 (0.74) 5 (0.76) 5 (0.76) 5 (0.76) 7 (0.77)
k-NN 7 (0.69) 5 (0.71) 9 (0.73) 9 (0.73) 3 (0.68) 7 (0.75) 11 (0.75) 9 (0.74) 7 (0.73)
  1. Italic value indicates ISD feature