Re: [R] Cluster analysis and bootstraps

About this list Date view Thread view Subject view Author view Attachment view

From: Andrew C. Ward (s195404@student.uq.edu.au)
Date: Wed 30 Apr 2003 - 10:43:12 EST


Message-id: <1051663392.3eaf1c207f90b@my.uq.edu.au>

You could try function fanny() in package cluster. This function does
fuzzy clustering, and returns a coefficient for each object/cluster
of how fuzzy or crisp the clustering was.

It's hard to imagine bootstrapping a confidence interval around a
categorical value such as a cluster. Perhaps someone else can explain
this.

Regards,

Andrew C. Ward

CAPE Centre
Department of Chemical Engineering
The University of Queensland
Brisbane Qld 4072 Australia
andreww@cheque.uq.edu.au

Quoting "Hector L. Ayala-del-Rio" <ayalahec@msu.edu>:

> Hi R helpers,
>
> I was wondering if anybody knows if is possible to generate
> bootstrap
> values for a cluster analysis in R. What I am trying to do is
> obtain
> some confidence on the clusters formed by resampling the data set.
> A
> similar type of analysis is used in molecular taxonomy and the
> confidence values of each cluster are placed in the nodes of the
> dendogram. Any ideas on how to do this in R will be appreciated.
>
> Thanks
>
> Héctor L. Ayala-del-Río, Ph.D.
> Center for Microbial Ecology &
> Center for Genomic and Evolutionary Studies
> on Microbial Life at Low Temperatures
> Michigan State University
> 545 Plant & Soil Sciences Building
> East Lansing, MI 48824-1325
> Phone: 517-353-9021
> Fax: 517-353-2917
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help


About this list Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.3 : Tue 01 Jul 2003 - 09:11:44 EST