db_indexR {SOMEnv}

Evaluate Davis-Bouldin index for the cluster split of data input

Description

The function has been coded in R code starting from db_index.m script present in somtoolbox for Matlab by Vesanto and adapted for the use in the shiny app

Usage

db_indexR(codebook, k_best, c_best)

Arguments

codebook

SOM codebook

k_best

Vector with cluster number assignment for each sample

c_best

Matrix with cluster centroids

Value

The mean DB-index for the clustering

Author(s)

Sabina Licen, Pierluigi Barbieri

References

J. Vesanto, J. Himberg, E. Alhoniemi, J. Parhankagas, SOM Toolbox for Matlab 5, Report A57, 2000, Available at: www.cis.hut.fi/projects/somtoolbox/package/papers/techrep.pdf

See Also

som_mdistR, kmeans_clustersRProg