Figure 4From: Evaluation of TV commercials using neurophysiological responsesAverage number of feature set and accuracy of cross validation. (Left) average number of optimal feature set (feature dimension) (right) average accuracy of cross validation. The number of features was 7.67 ± 0.70 (happiness), 7.33 ± 0.49 (surprise), and 7.44 ± 0.66 (attention). Average accuracy was 87.22% ± 1.40% (happiness), 85.77% ± 1.8% (surprise), and 89.13% ± 0.96% (attention). CV, cross validation.Back to article page