kulczynski {partitionComparison}

Kulczynski Index

Description

Compute the Kulczynski index

\frac{1}{2} \left(\frac{N_{11}}{N_{21}} + \frac{N_{11}}{N_{12}} \right)

Usage

kulczynski(p, q)

## S4 method for signature 'Partition,Partition'
kulczynski(p, q)

## S4 method for signature 'PairCoefficients,missing'
kulczynski(p, q = NULL)

Arguments

p

The partition P or an instance of PairCoefficients

q

The partition Q or NULL

Methods (by class)

• kulczynski(p = Partition, q = Partition): Compute given two partitions

• kulczynski(p = PairCoefficients, q = missing): Compute given the pair coefficients

Author(s)

Fabian Ball [e-mail]

References

Kulczynski S (1927). “Zespoly Roslin w Pieninach.” Bull. Intern. Acad. Pol. Sci. Lett. Cl. Sci. Math. Nat., B (Sci. Nat.), 1927(Suppl 2), 57–203.

Examples

isTRUE(all.equal(kulczynski(new("Partition", c(0, 0, 0, 1, 1)), 
                            new("Partition", c(0, 0, 1, 1, 1))), 0.5))