Rand Index

Source: R/aricode.R

A function to compute the rand index between two classifications

RI(c1, c2)

Arguments

c1

a vector containing the labels of the first classification. Must be a vector of characters, integers, numerics, or a factor, but not a list.

c2

a vector containing the labels of the second classification.

Value

a scalar with the rand index.

See also

ARI, NID, NVI, NMI, clustComp

Examples

data(iris)
cl <- cutree(hclust(dist(iris[,-5])), 4)
RI(cl,iris$Species)
#> [1] 0.821745