cl.memb.H: Cluster membership

In fclust: Fuzzy Clustering

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

See Also

cl.memb, cl.memb.t

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 documentation built on Nov. 16, 2022, 5:10 p.m.