Fig. 5

Improvement of the GM by the consensus method (a) and threshold method (b) on the VHM dataset. The host prediction accuracies of the GM was obtained from the ten-fold cross-validations on the K-means clustering of the VHM dataset. Only the prediction accuracies at the genus level were shown in the figure for all methods. The host prediction accuracies at higher taxonomic levels are shown in Additional file 1: Table S1 and S2