reachability: An auxiliary function of 'lofactor()'

In DMwR: Functions and data for "Data Mining with R"

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.

Details

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

Value

A vector.

Author(s)

Luis Torgo [e-mail]

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

DMwR documentation built on May 1, 2019, 9:17 p.m.