On Wed, 2009-12-16 at 09:45 +0100, Martin Guetlein wrote: 
> On Wed, Dec 16, 2009 at 9:25 AM, Nina Jeliazkova <nina at acad.bg> wrote:
> > Hello All,
> >>>> - Does the Validation service rely on such functionality, or calculates the
> >>>> relevant statistics itself ?
> >>>>
> >>>>
> >>> No, here is my (validation) point of view:
> >>>
> >>> Prediction models do not calculate prediction statistics on their own,
> >>> they just make predictions.
> >>> You can use the validation service to get the RMSE of a regression
> >>> model on some dataset. The corresponding REST operation is the third
> >>> command in the API
> >>> (http://www.opentox.org/dev/apis/api-1.1/Validation). The RMSE as well
> >>> as other regression statistics are available in the validation object
> >>> which is returned.
> >>>
> >>
> >> Fabian and I have thought about that and we think that the fact that our
> >> algorithms expose supported statistics might be due to the fact we
> >> normally work. Using the same implementation for model building and
> >> validation. But in OpenTox that is not the case. We have separate
> >> services for model building and validation. Consequently, the algorithms
> >> building the model does not have to support any statistics. They are as
> >> Martin points out correctly calculated in the validation service. The
> >> only thing that has to be exposed (maybe) is, what kind of statistics
> >> can be calculated on the predictions. Classification or regression
> >> stats.
> >> So in our opinion we could get rid of the "statisticsSupported" stuff.
> >> We may expose if the algorithm is classification or regression but that
> >> should be covered by the algorithm ontology.
> >>
> >>
> > Do we all agree to remove "statisticsSupported" field from Algorithm RDF
> > representation?
> 
> 
> Agreed

Agreed

> 
> 
> >
> > Best regards,
> > Nina
> >> Opinions?
> >>
> >> best regards
> >> Tobias
> >>
> >>
> >>
> >
> > _______________________________________________
> > Development mailing list
> > Development at opentox.org
> > http://www.opentox.org/mailman/listinfo/development
> >
> 
> 
> 


-- 
Dipl.-Bioinf. Tobias Girschick

Technische Universität München
Institut für Informatik
Lehrstuhl I12 - Bioinformatik
Bolzmannstr. 3
85748 Garching b. München, Germany

Room: MI 01.09.042
Phone: +49 (89) 289-18002
Email: tobias.girschick at in.tum.de
Web: http://wwwkramer.in.tum.de/girschick