cluster results using fanny
Barbara Diaz wrote:
Hi, I am using fanny and I have estrange results. I am wondering if someone out there can help me understand why this happens. First of all in most of my tries, it gives me a result in
which each
object has equal membership in all clusters. I have read that that means "the clustering is entirely fuzzy". Looking at the
graphics it
is really difficult to understand how objects with so
different scores
for the variables have the same membership for all the clusters.
Hi Barbara, I think, there is a problem with fanny, when you have standardised data. For example: library(mvoutlier) library(cluster) data(chorizon) a <- fanny(chorizon[,101:110],4) b <- fanny(scale(chorizon[,101:110]),4) a$mem # is ok, but b$mem # have same memberships Better to use function cmeans in package e1071, which gives correct memberships! Best, Matthias
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