Re: [R] distance in the function kmeans

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From: n.bouget@laposte.net
Date: Fri 28 May 2004 - 20:54:29 EST


Message-id: <HYF7MT$0BFA428B97ABF8D7BFD367598B943F78@laposte.net>

I don't exactly understand what you do, could you show me the
program that you execute to do that?

> n.bouget wrote:
> > Hi,
> > I want to know which distance is using in the function kmeans
> > and if we can change this distance.
> > Indeed, in the function pam, we can put a distance matrix in
> > parameter (by the line "pam<-pam(dist(matrixdata),k=7)" ) but
> > we can't do it in the function kmeans, we have to put the
> > matrix of data directly ...
> > Thanks in advance,
> > Nicolas BOUGET
>
> One solution is to transform the data in a way, that the
euclidean
> distance of the transformed values represents some other
distance of the
> original values. This works at least for the
Mahalanobis-Distance, when
> one applies a multivariate technique to a PCA transformed
and re-scaled
> matrix, but I don't know if there are transformations for
some other
> distance measures.
>
> Thomas P.
>

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