Average misclassification depth of phylogenetic learning based on a 16S rRNA gene NJ tree. The average depth of the misclassified test profiles of each species is visualized for phylogenetic learning based on a 16S rRNA gene NJ tree. Depth equals the number of nodes along the classification path until misclassification occurs (the corresponding node also included) and corresponds to the green bars. The maximum or correct depth is shown by the red bars. Maximum depth equals the number of nodes along the true phylogenetic path (leaf included).