DMwR (version 0.4.1)

reachability: An auxiliary function of lofactor()

Description

This function computes the reachability measure for each instance of a dataset. This result is used later to compute the Local Outlyingness Factor.

Usage

reachability(distdata, k)

Arguments

distdata
The matrix of distances.
k
The number of neighbors.

Value

A vector.

Details

This function is strongly based on the code provided by Acuna et. al. (2009) for the previously available dprep package.

References

Acuna, E., and Members of the CASTLE group at UPR-Mayaguez, (2009). dprep: Data preprocessing and visualization functions for classification. R package version 2.1.

Torgo, L. (2010) Data Mining using R: learning with case studies, CRC Press (ISBN: 9781439810187).

http://www.dcc.fc.up.pt/~ltorgo/DataMiningWithR

See Also

lofactor