SOTAclustering: SOTA Clustering

In FCPS: Fundamental Clustering Problems Suite

SOTA Clustering

Description

Self-organizing Tree Algorithm (SOTA) introduced by [Herrero et al., 2001].

Usage

SOTAclustering(Data, ClusterNo,PlotIt=FALSE,UnrestGrowth,...)

Arguments

Data	[1:n,1:d] matrix containing the dataset to be clustered. It consists of n cases of d-dimensional data points. Every case has d attributes, variables or features.
ClusterNo	A number k which defines k different clusters to be built by the algorithm.
PlotIt	Default: FALSE, if TRUE plots the first three dimensions of the dataset with colored three-dimensional data points defined by the clustering stored in Cls
UnrestGrowth	TRUE: forces the ClusterNo option to uphold. If FALSE, the algorithm estimates the number of clusters. In that case, ClusterNo should be set to a sufficiently high value because it is used internally as the maximum number of iterations; the algorithm stops when this value is reached or the maximum-diversity criterion is satisfied.
...	Further arguments to be set for the clustering algorithm, if not set, default arguments are used.

Value

List of

Cls	[1:n] numerical vector with n numbers defining the classification as the main output of the clustering algorithm. It has k unique numbers representing the arbitrary labels of the clustering.
sotaObject	Object defined by clustering algorithm as the other output of this algorithm

Note

*Luis Winckelman intergrated several function from clValid because it's ORPHANED.

Author(s)

Luis Winckelmann*, Vasyl Pihur, Guy Brock, Susmita Datta, Somnath Datta

References

[Herrero et al., 2001] Herrero, J., Valencia, A., & Dopazo, J.: A hierarchical unsupervised growing neural network for clustering gene expression patterns, Bioinformatics, Vol. 17(2), pp. 126-136. 2001.

Examples

#Does Work
data('Hepta')
out=SOTAclustering(Hepta$Data,ClusterNo=7)
table(Hepta$Cls,out$Cls)


#Does not work well
data('Lsun3D')
out=SOTAclustering(Lsun3D$Data,ClusterNo=100,PlotIt=FALSE,UnrestGrowth=FALSE)

FCPS documentation built on Oct. 3, 2026, 9:06 a.m.