DB_weightedIdx {Radviz}

Computation of weighted version of the Davies-Bouldin index. This index serves as a measure of clustering quality of a 2D projection result with known class labels

Description

Computation of weighted version of the Davies-Bouldin index. This index serves as a measure of clustering quality of a 2D projection result with known class labels

Usage

DB_weightedIdx(x, className = NULL)

Arguments

x

an object of class Radviz, as returned by do.radviz

className

the name of the class column to use

Details

If className is left NULL (the default) the function expects a single extra column on top of the data columns (used to define springs) and the standard Radviz columns.

Value

weighted DB index value

Author(s)

Nicolas Sauwen