RandIndex {FreeSortR}

Rand Index between partitions

Description

Computes the Rand Index and the Adjusted Rand Index between two partitions

Usage

RandIndex(Partition1, Partition2)

Arguments

Partition1

Vector describing the first partition

Partition2

Vector describing the second partition

Details

Supports incomplete partitions (value 0 is coding for missing stimulus)

Value

List of following components:

Rand

Rand Index between the partitions

AdjustedRand

Adjusted rand Index between the partitions

References

Rand (1971) Jasa, 66, 846-850

Hubert & Arabie (1985) J. of Classification, 2, 193-218

Examples

  Partition1<-c(1,1,1,2,2,2)
  Partition2<-c(1,1,2,2,2,3)
  r<-RandIndex(Partition1,Partition2)
  r
  # $Rand
  # [1] 0.6
  # $AdjustedRand
  # [1] 0.1176471