sokalSneath3 {partitionComparison}

Sokal & Sneath Index 3

Description

Compute the index 3 of Sokal and Sneath

\frac{N_{11}N_{00}}{\sqrt{N_{21}N_{12}N'_{01}N'_{10}}}

Usage

sokalSneath3(p, q)

## S4 method for signature 'Partition,Partition'
sokalSneath3(p, q)

## S4 method for signature 'PairCoefficients,missing'
sokalSneath3(p, q = NULL)

Arguments

p

The partition P or an instance of PairCoefficients

q

The partition Q or NULL

Methods (by class)

• sokalSneath3(p = Partition, q = Partition): Compute given two partitions

• sokalSneath3(p = PairCoefficients, q = missing): Compute given the pair coefficients

Author(s)

Fabian Ball [e-mail]

References

Sokal RR, Sneath PHA (1963). Principles of numerical taxonomy.. Freeman, San Francisco.

Examples

isTRUE(all.equal(sokalSneath3(new("Partition", c(0, 0, 0, 1, 1)), 
                              new("Partition", c(0, 0, 1, 1, 1))), 1/3))