fclust: cl.memb.H – R documentation

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cl.memb.H

Cluster membership

Description

Produces a summary of the membership degree information in the hard clustering sense (objects are considered to be assigned to clusters only if the corresponding membership degree are >=0.5).

Usage

cl.memb.H (U)

Arguments

`U`	Membership degree matrix

Details

An object is assigned to a cluster according to the maximal membership degree provided that such a maximal membership degree is >=0.5, otherwise it is assumed that an object is not assigned to any cluster (denoted by cluster index = 0 in row 1).

Value

info.U

Matrix containing the indexes of the clusters where the objects are assigned (row 1) and the associated membership degrees (row 2)

Author(s)

Paolo Giordani, Maria Brigida Ferraro, Alessio Serafini

Examples

n=20
k=3
## randomly generated membership degree matrix
U=matrix(runif(n*k,0,1), nrow=n, ncol=k)
U=U/apply(U,1,sum)
info.U=cl.memb.H(U)
## objects assigned to clusters in the hard clustering sense
rownames(info.U[info.U[,1]!=0,])

fclust

Fuzzy Clustering

v2.1.1

GPL (>= 2)

Authors