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Date:         Tue, 27 Sep 2005 18:31:59 -0300
Reply-To:     Hector Maletta <hmaletta@fibertel.com.ar>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Hector Maletta <hmaletta@fibertel.com.ar>
Subject:      Re: Cluster Analysis - best practices
Comments: To: cristiano <rivoli2@gmail.com>
In-Reply-To:  <5fcb6cd605092714277f4002d5@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Jajuga is more advanced, Everitt is more introductory. There is also the slim introductory text by Aldenderfer and Blashfield, Cluster Analysis, in the Sage Publications series Quantitative Applications in the Social Sciences No.44 (first published 1984). Hector

> -----Original Message----- > From: cristiano [mailto:rivoli2@gmail.com] > Sent: Tuesday, September 27, 2005 6:27 PM > To: Hector Maletta > Cc: SPSSX-L@listserv.uga.edu > Subject: Re: Cluster Analysis - best practices > > Thanks Hector this literature is for adv-user I think? > > 2005/9/27, Hector Maletta <hmaletta@fibertel.com.ar>: > > A good introduction is Brian Everitt, Cluster Analysis > (Arnold, London > > and Halsted Press, New York). > > At a higher level of sophistication, K.Jajuga, A. > Sokolowski and H.-H. > > Bock, editors, Classification, Clustering and Data Analysis > (Springer). > > About using SPSS clustering procedures, you better follow > Marija Norusis' > > advice. > > > > Hector > > > > > -----Original Message----- > > > From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On > > > Behalf Of Aric Zion > > > Sent: Monday, September 26, 2005 8:21 PM > > > To: SPSSX-L@LISTSERV.UGA.EDU > > > Subject: Re: Cluster Analysis - best practices > > > > > > A clear overview is provided by H. Charles Romesburg's "Cluster > > > Analysis for Researchers", (2004) Lulu Press. While this doesn't > > > give guidance on how to specifically run Cluster Analysis > in SPSS, > > > it does offer an very clear view of how cluster analysis operates. > > > > > > Aric > > > > > > > > > -----Original Message----- > > > From: SPSSX(r) Discussion on behalf of Bob Schacht > > > Sent: Mon 9/26/2005 1:22 PM > > > To: SPSSX-L@LISTSERV.UGA.EDU > > > Cc: > > > Subject: Re: Cluster Analysis - best practices > > > > > > > > > > > > At 04:32 AM 9/26/2005, cristiano wrote: > > > >Dear listers, > > > > I'm a statistician but I'm looking for some > > > books/resources/example for > > > >using Cluster Analysis with SPSS: i'd like to know the > > > models and methods > > > >behind this analysis. > > > > In your experience, could you suggest to me some stuff? > > > > Thanks in advance > > > > Cristiano > > > > > > Cristiano, > > > As a prelude to your reading, let me comment in general. > > > Cluster analyses > > > fall into two approaches: One is polythetic > agglomerative in > > > nature, the > > > other monothetic subdivisive. > > > > > > Polythetic agglomerative methods start with every > case as an > > > individual, > > > and proceed to cluster by combining cases that > most closely > > > resemble each > > > other. In each step of the analysis, the > similarity between > > > remaining cases > > > and clusters is measured, and those most closely > resembling > > > each other are > > > combined. This proceeds by steps as far as one > wants to go, > > > based on > > > measures of cohesion or similarity. > > > > > > Monothetic subdivisive methods, on the other hand, start > > > with all cases > > > combined into one supergroup. The procedure in > this case is > > > how to > > > subdivide the supergroup in to two groups in a way that > > > maximizes the > > > *difference* between the two groups. I'm not clear on how > > > this procedure > > > works, but it may begin with variables with the highest > > > degree of > > > variability, and splitting the cases at the mean. > > > Again, the process > > > proceeds stepwise until some threshold criterion > is reached. > > > > > > You may have some a priori reason for preferring one > > > approach over the > > > other. Descriptions of the methods may not identify > > > themselves clearly with > > > these alternatives, so this overview might prove helpful. > > > > > > Bob > > > > > > > > > Robert M. Schacht, Ph.D. <schacht@hawaii.edu> > > > Pacific Basin Rehabilitation Research & Training Center > > > 1268 Young Street, Suite #204 > > > Research Center, University of Hawaii > > > Honolulu, HI 96814 > > > > > > > > > __________ Informacin de NOD32 1.1233 (20050926) __________ > > > > > > Este mensaje ha sido analizado con NOD32 Antivirus System > > > http://www.nod32.com > > > > > > > > > > __________ Información de NOD32 1.1234 (20050927) __________ > > Este mensaje ha sido analizado con NOD32 Antivirus System > http://www.nod32.com > >


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