Fig. 4From: Semi-supervised clustering of fractionated electrograms for electroanatomical atrial mappingBoxplots of the distribution of features values obtained on the DB1 for all considered levels of fractionation (0, 1, 2 and 3). Top row—the selected feature subset \({\varXi }^{*}\); bottom row— the rejected feature subset. Red crosses mark outliers. All selected features have almost non-overlapping boxplots. This fact illustrates the ability of each feature in separating the classes. Results of Spearman correlation \(\rho\) between each feature and the classes of fractionation is shownBack to article page