SharedNearestNeighborClustering: SNN clustering

Description Usage Arguments Details Value Author(s) References See Also Examples

View source: R/SharedNearestNeighborClustering.R

Description

Shared Nearest Neighbor Clustering of [Ertoz et al., 2003].

Usage

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SharedNearestNeighborClustering(Data,Knn,

Radius,minPts,PlotIt=FALSE,

UpperLimitRadius,...)

Arguments

Data

[1:n,1:d] matrix of dataset to be clustered. It consists of n cases of d-dimensional data points. Every case has d attributes, variables or features.

Knn

Number of neighbors to consider to calculate the shared nearest neighbors.

Radius

Eps [Ester et al., 1996, p. 227] neighborhood in the R-ball graph/unit disk graph), size of the epsilon neighborhood. If NULL, automatic estimation is done using insights of [Ultsch, 2005].

minPts

Number of minimum points in the eps region (for core points). In principle minimum number of points in the unit disk, if the unit disk is within the cluster (core) [Ester et al., 1996, p. 228]. if NULL, its 2.5 percent of points.

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

UpperLimitRadius

Limit for radius search, experimental

...

Further arguments to be set for the clustering algorithm, if not set, default arguments are used.

Details

..

Value

List of

Cls

[1:n] numerical vector defining the clustering; this classification is the main output of the algorithm. Points which cannot be assigned to a cluster will be reported as members of the noise cluster with 0.

Object

Object defined by clustering algorithm as the other output of this algorithm

Author(s)

Michael Thrun

References

[Ertoz et al., 2003] Levent Ertoz, Michael Steinbach, Vipin Kumar: Finding Clusters of Different Sizes, Shapes, and Densities in Noisy, High Dimensional Data, SIAM International Conference on Data Mining, 47-59, 2003.

See Also

sNNclust

Examples

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data('Hepta')
out=SharedNearestNeighborClustering(
Hepta$Data, Knn=7,Radius=NULL,minPts=NULL,PlotIt = FALSE)

FCPS documentation built on July 8, 2021, 1:06 a.m.