Additional file 5.

Table S3 - comparison of optimal cluster number under differing clustering methods as well as optimal cluster number scores. All data are calculated at the genus level, using Jensen-Shannon distance. Abbrevations: CH, Calinski-Harabasz pseudo F-statistic; SIL, Silhouette internal cluster optimality criterion; BHG, Baker and Hubert Gamma; DB, Davies-Bouldin's index.

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Hildebrand et al. Genome Biology 2013 14:R4   doi:10.1186/gb-2013-14-1-r4