[R] Help in kmeans
chrish at stats.ucl.ac.uk
Wed Apr 6 14:00:27 CEST 2011
I'm not going to comment on column names, but this is just to make you
aware that the results of k-means depend on random initialisation.
This means that it is possible that you get different results if you run
it several times. It basically gives you a local optimum and there may be
more than one of these.
Use set.seed to see whether this explains your problem.
On Wed, 6 Apr 2011, Raji wrote:
> Hi All,
> I was using the following command for performing kmeans for Iris dataset.
> This was giving proper results for me. But, in my application we generate
> the R commands dynamically and there was a requirement that the column names
> will be sent instead of column indices to the R commands.Hence, to
> incorporate this, i tried using the R commands in the following way.
> In both the ways, we found that the results are different from what we saw
> with the first command (with column indices).
> can you please let us know what is going wrong here.If so, can you please
> let us know how the column names can be used in kmeans to obtain the correct
> Many thanks,
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> and provide commented, minimal, self-contained, reproducible code.
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