Table 2.

Similarities between sequences in the three training sets.

Model Type	Number of clusters	Minimum cluster size	Maximum cluster size	Number of Singletons	Average cluster size	Cluster distributiona
Bacterial	84	1	4	74	1.19	6,2,2
Viral	87	1	5	78	1.15	7,1,0,1
Tumour	76	1	7	66	1.32	4,2,2,1,0,1

For a given cut-off, a perfectly diverse set of sequences will have number of clusters equal to the number of sequences, a maximum and minimum cluster size of one, and an average cluster size of one.

^a for non-singleton clusters of 2 or more members. Cluster numbers are shown in ascending cluster size.