On Thu, Jan 31, 2013 at 08:17:02AM -0500, Satrajit Ghosh wrote:
> the problem that this causes is in comparing clusters from two similar
> datasets. are the clusters different because they reflect different
> properties or simply differences in local minima.

Because clustering is so much of an ill-posed problem in noisy and
high-dimensional situations, as in neuroimaging, such comparison is
difficult and often imposible.

Quite often people believe way too much in the clustering results that
they get: it is not clear that the clusters are identifiable from the
data.

G

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