reachability: An auxiliary function of 'lofactor()'

In DMwR2: Functions and Data for the Second Edition of "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. (2016) Data Mining using R: learning with case studies, second edition, Chapman & Hall/CRC (ISBN-13: 978-1482234893).

http://ltorgo.github.io/DMwR2

See Also

lofactor

DMwR2 documentation built on May 2, 2019, 1:42 p.m.