klaR (version 0.6-14)

cvtree: Extracts variable cluster IDs

Description

Extracts cluster IDs for variables according to a dendrogram from object of class cvtree.

Usage

cvtree(object, k = 2, mincor = NULL, ...)

Arguments

object

Object of class corclust.

k

Number of clusters to be extracted from dendrogram.

mincor

Minimum within cluster correlation. Can be specified alternatively to k.

...

Currently not used.

Value

Object of class cvtree with elements:

cluster

Vector of cluster IDs.

correlations

Matrix of average within cluster correlations and average corrleation to all variables of the closest cluster as well as the ID of the closest cluster. For factor variables Cramer's V is computed.

Details

Like in corclust for correlation comparison numerics and factors are considered separately. For factors Cramer's V statistic is used.

References

Roever, C. and Szepannek, G. (2005): Application of a genetic algorithm to variable selection in fuzzy clustering. In C. Weihs and W. Gaul (eds), Classification - The Ubiquitous Challenge, 674-681, Springer.

See Also

See also corclust, plot.corclust and hclust for details on the clustering algorithm.

Examples

# NOT RUN {
    data(B3)
    ccres <- corclust(B3)
    plot(ccres)
    cvtree(ccres, k = 3)
# }

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