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geocmeans (version 0.3.4)

calcSilhouetteIdx: Fuzzy Silhouette index

Description

Calculate the Silhouette index of clustering quality.

Usage

calcSilhouetteIdx(data, belongings)

Value

A float, the fuzzy Silhouette index

Arguments

data

The original dataframe used for the clustering (n*p)

belongings

A membership matrix (n*k)

Details

The index is calculated with the function SIL.F from the package fclust. When the dataset is too large, an approach by subsampling is used to avoid crash.