pearson {partitionComparison}

Pearson Index

Description

Compute the Pearson index

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

Usage

pearson(p, q)

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

## S4 method for signature 'PairCoefficients,missing'
pearson(p, q)

Arguments

p

The partition P or an instance of PairCoefficients

q

The partition Q or NULL

Methods (by class)

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

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

Author(s)

Fabian Ball [e-mail]

References

Pearson K (1926). “On the Coefficient of Racial Likeness.” Biometrika, 18(1/2), 105–117. ISSN 0006-3444, doi:10.2307/2332498.

Examples

isTRUE(all.equal(pearson(new("Partition", c(0, 0, 0, 1, 1)), 
                         new("Partition", c(0, 0, 1, 1, 1))), 1/144))