Re: K means.

[Carnë Draug]

On 8 December 2011 20:01, Søren Hauberg <address@hidden> wrote:
> tor, 08 12 2011 kl. 14:35 -0500, skrev Ben Abbott:
>> On Dec 8, 2011, at 2:04 AM, Søren Hauberg wrote:
>>
>> > ons, 07 12 2011 kl. 22:37 -0500, skrev Jordi Gutiérrez Hermoso:
>> >> On 7 December 2011 19:52, Prachi Jain <address@hidden> wrote:
>> >>> I was wondering is there any command by which we can find K means.
>> >>
>> >> We don't have such a function in Octave yet, but there are several
>> >> implementations on the web. Would you like to help us get this
>> >> function into Octave?
>> >
>> > Attached is an implementation I did some years ago; it's missing
>> > documentation, but otherwise is in a reasonable state.
>> >
>> > Søren
>>
>> Soren,
>>
>> Is your implementation compatible with Matlab's?
>>
>>       http://www.mathworks.com/help/toolbox/stats/kmeans.html
>
> Not quite, it seems.
>
> My implementation requires an explicit initialisation, whereas Matlab
> finds an initial set of clusters by sampling k random points. This
> shouldn't be much work to implement, though.
>
> The Matlab version also has a bunch of options that my version does not
> have. I don't think it's much work to implement these options, but I
> don't have the time right now.
>
> Søren

Should we add it to the statistics package anyway? Other users can
work on top of it if it is made available first. What do you think?

Carnë