Re: [R] algorithm for clustering categorical data

2013-08-06 Thread Li, Yan
rare event" and similar cases. Martin > - > David L Carlson > Associate Professor of Anthropology > Texas A&M University > College Station, TX 77840-4352 > -Original Message- > From: Li, Yan [

Re: [R] algorithm for clustering categorical data

2013-08-06 Thread Li, Yan
Thanks David, This is very useful! -Original Message- From: David Carlson [mailto:dcarl...@tamu.edu] Sent: Tuesday, August 06, 2013 11:27 AM To: Li, Yan; r-help@r-project.org Subject: RE: [R] algorithm for clustering categorical data What do you mean by representing the categorical

Re: [R] algorithm for clustering categorical data

2013-08-06 Thread Martin Maechler
ases. Martin > - > David L Carlson > Associate Professor of Anthropology > Texas A&M University > College Station, TX 77840-4352 > -Original Message- > From: Li, Yan [mailto:yan...@ibi.com] > Sent: T

Re: [R] algorithm for clustering categorical data

2013-08-06 Thread David Carlson
-- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77840-4352 -Original Message- From: Li, Yan [mailto:yan...@ibi.com] Sent: Tuesday, August 6, 2013 9:36 AM To: dcarl...@tamu.edu; r-help@r-project.org Subject: RE: [R] algorithm for clu

Re: [R] algorithm for clustering categorical data

2013-08-06 Thread Li, Yan
hat is the draw back? Thanks you, Yan -Original Message- From: David Carlson [mailto:dcarl...@tamu.edu] Sent: Thursday, August 01, 2013 12:08 PM To: Li, Yan; r-help@r-project.org Subject: RE: [R] algorithm for clustering categorical data Read up on Gower's Distance measures (a

Re: [R] algorithm for clustering categorical data

2013-08-01 Thread Li, Yan
c: r-help@r-project.org Subject: Re: [R] algorithm for clustering categorical data On Aug 1, 2013, at 9:00 AM, Li, Yan wrote: > Hi All, > > Does anyone know what algorithm for clustering categorical variables? > R packages? Many. http://cran.r-project.org/web/views/Cluster.html &g

Re: [R] algorithm for clustering categorical data

2013-08-01 Thread David Winsemius
On Aug 1, 2013, at 9:00 AM, Li, Yan wrote: > Hi All, > > Does anyone know what algorithm for clustering categorical variables? R > packages? Many. http://cran.r-project.org/web/views/Cluster.html > Which is the best? For what purpose? > > If a data has both numeric and categorical data, wh

Re: [R] algorithm for clustering categorical data

2013-08-01 Thread Li, Yan
: RE: [R] algorithm for clustering categorical data Read up on Gower's Distance measures (available in the ecodist package) which can combine numeric and categorical data. You didn't give us any information about how you numerically transformed the categorical variables, but the usual a

Re: [R] algorithm for clustering categorical data

2013-08-01 Thread David Carlson
-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Li, Yan Sent: Thursday, August 1, 2013 11:00 AM To: r-help@r-project.org Subject: [R] algorithm for clustering categorical data Hi All, Does anyone know what algorithm for clusteri

[R] algorithm for clustering categorical data

2013-08-01 Thread Li, Yan
Hi All, Does anyone know what algorithm for clustering categorical variables? R packages? Which is the best? If a data has both numeric and categorical data, what is the best clustering algorithm to use and R package? I tried numeric transformation of all categorical fields and doing clusterin