MultBiplotR (version 23.11.0)

CategoricalProximities: Proximities among individuals using nominal variables.

Description

Proximities among individuals using nominal variables.

Usage

CategoricalProximities(Data, SUP = NULL, coefficient = "GOW", transformation = 3, ...)

Value

A list of Values

Arguments

Data

A data frame containing categorical (nominal) variables

SUP

Supplementary data (Used to project supplementary individuals onto the PCoA configuration, for example)

coefficient

Similarity coefficient to use (see details)

transformation

Transformation of the similarity into a distance

...

Extra parameters

Author

Jose Luis Vicente Villardon

Details

The function calculates similarities and dissimilarities among a set ob ogjects characterized by a set of nominal variables. The function uses similarities and converts into dissimilarities using a variety of transformations controled by the user.

References

dos Santos, T. R., & Zarate, L. E. (2015). Categorical data clustering: What similarity measure to recommend?. Expert Systems with Applications, 42(3), 1247-1260.

Boriah, S., Chandola, V., & Kumar, V. (2008). Similarity measures for categorical data: A comparative evaluation. red, 30(2), 3.

Examples

data(Doctors)
Dis=CategoricalProximities(Doctors, SUP=NULL, coefficient="GOW" , transformation=3)
pco=PrincipalCoordinates(Dis)
plot(pco, RowCex=0.7, RowColors=as.integer(Doctors[[1]]), RowLabels=as.character(Doctors[[1]]))