[R] Ordination of feature film data question
news.ftr at free.fr
Mon Mar 13 17:06:38 CET 2006
Sorry that I send this text for a second time - I didn't see my posting
before (though I have set the preferences to see them)
If you want a comparison of different distance measures you might try
the manuscript of Johann Bacher who is a specialists in cluster methods.
He published an in-depth text on his web site
Prof Brian Ripley wrote:
> `Ordination' is ecologists' terminology for multidimensional scaling.
> You will find worked examples in MASS (the book, see the R FAQ), and the
> two most commonly used functions, isoMDS and sammon, in MASS the package.
> In your example, the main issue is going to be to choose an appropriate
> dissimilarity measure, and dist() (in stats) and daisy() in package
> cluster will give you a good start.
> On Sat, 11 Mar 2006, David Woods wrote:
>> I am severely rusty re. multivariate / ordination analysis, having done
>> my last work 40 years ago (in plant ecology). I am interested in
>> exploring applications of multivariate analytic approaches to data from
>> the history of motion picture films. I'd very much appreciate any
>> pointers as to possibly appropriate proceedures. The individual
>> "samples" may be individual films and the measurements may be the
>> presence and absence of actors and production personel; for example two
>> films with many actors and / or crew in common would be located close
>> together in the resultant ordination, while films with few or no
>> personel in common would be located far apart.
>> May I express my appreciation in advance to any helpful recipients.
>> David Woods
>> Dr. David Woods M.B.K.S.
>> Holcus Ltd.
>> 16 John Street
>> Kingston Square
>> Hull HU2 8DH
>> East Yorkshire
>> tel. 44 (0)1482 323421
>> cel (0781) 259 1772
>> [[alternative HTML version deleted]]
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Dr. Frank Thomas
FTR Internet Research
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