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Table 6 Comparison of Kappa indices for OPT1 with 100 individuals and 60 generations, and OPT3 with 200 individuals and 90 generations, with respect to OPT1, OPT2, and OPT3 with 50 individuals and 50 generations

From: Classification of motor imagery tasks for BCI with multiresolution analysis and multiobjective feature selection

Subject

OPT1 (100,60)

OPT1 (50,50)

OPT2 (50, 50)

OPT3 (200,90)

OPT3 (50,50)

Kappa index (x# mean, std)

Kappa index (x# mean, std)

Kappa index (x# mean, std)

Kappa index (x# mean, std)

Kappa index (x# mean, std)

104

0.841 ± 0.018

0.819 ± 0.013

0.902 ± 0.010

0.897 ± 0.019

0.882 ± 0.022

107

0.836 ± 0.016

0.816 ± 0.018

0.880 ± 0.011

0.865 ± 0.018

0.845 ± 0.022

Subject

OPT1 (100,60)

OPT1 (50,50)

OPT2 (50, 50)

OPT3 (200,90)

OPT3 (50,50)

Kappa index (xe# mean, std)

Kappa index (xe# mean, std)

Kappa index (xe# mean, std)

Kappa index (xe# mean, std)

Kappa index (xe# mean, std)

104

0.515 ± 0.047

0.510 ± 0.056

0.545 ± 0.035

0.573 ± 0.032

0.563 ± 0.034

107

0.580 ± 0.052

0.560 ± 0.041

0.634 ± 0.019

0.644 ± 0.022

0.603 ± 0.027

  1. x# evaluation was done with training patterns, xe# evaluation was done with test patterns
  2. Italic values represent the best values provided by any alternative procedure for a given subject