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USEARCH v11

Jaccard beta diversity metric

See also
  beta_div command
  Beta diversity metrics

The Jaccard metric between samples i and j is calculated as follows.

N = number of OTUs.

nki = count of OTU k in sample i.

S = sum k = 1 .. N of min(nki, nkj)

T = sum k = 1 .. N of max(nki, nkj)

Jaccard = 1 - S / T