Bray–Curtis dissimilarity

In ecology and biology, the Bray–Curtis dissimilarity is a statistic used to quantify the dissimilarity in species composition between two different sites, based on counts at each site. It is named after J. Roger Bray and John T. Curtis who first presented it in a paper in 1957.

Source: Wikipedia — Bray–Curtis dissimilarity (CC BY-SA 4.0)