On 14 March 2012 08:54, Lars Buitinck <[email protected]> wrote:
> 2012/3/13 Robert Layton <[email protected]>:
> > Lars, you are right, it should have metric='precomputed' in it.
> > However by passing the distance matrix without a metric, the features
> become
> > "distance to point i", which act as sort of meta-features anyway,
> allowing
> > training to happen. This means that it works with a distance matrix as
> > input, even though that is probably not what you wanted. I believe that
> some
> > classifiers use this concept, although it has escaped me which ones.
>
> But then still the demo is odd, because it is passing a similarity
> matrix, not distances:
>
> D = distance.squareform(distance.pdist(X))
> S = 1 - (D / np.max(D))
>
>
> --
> Lars Buitinck
> Scientific programmer, ILPS
> University of Amsterdam
>
>
> ------------------------------------------------------------------------------
> Keep Your Developer Skills Current with LearnDevNow!
> The most comprehensive online learning library for Microsoft developers
> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
> Metro Style Apps, more. Free future releases when you subscribe now!
> http://p.sf.net/sfu/learndevnow-d2d
> _______________________________________________
> Scikit-learn-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
>
Then that is a mistake (although ironically should not affect what I said
about meta-features...).
--
Public key at: http://pgp.mit.edu/ Search for this email address and select
the key from "2011-08-19" (key id: 54BA8735)
------------------------------------------------------------------------------
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-d2d
_______________________________________________
Scikit-learn-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
