Fig. 9

Significant difference between the classification algorithms and the random algorithm. F1, the algorithms on paper; F2, random algorithm; 1, GA_SVM under filter mode; 2, GA_FR under filter mode; 3, PCA_SVM under filter; 4, PCA_RF under filter; 5, GA_SVM under wrapper mode; 6, GA_FR under wrapper mode. p: p value, p < 0.05 indicates that the difference is significant; p > 0.05 indicates that the difference is not significant