[pymvpa] pymvpa one-class svm

[J.A. Etzel]

I'd be tempted to consider task vs. rest a two-class problem - task and 
rest!

Jo



On 1/21/2015 4:12 PM, basile pinsard wrote:
> Hi pyMVPA!
>
> does anyone has ever tried to use one-class SVM (or other 1-class
> classifier) in PyMVPA.
> I tried using :
> SVM(svm_impl='ONE_CLASS')
> but I am not sure what are the targets supposed to be: boolean or {-1,1}
> I do not know if the wrapper passes to training only the positive
> samples or not? while in a cross-validation scheme we would test on full
> dataset to find false-positives.
> I also tried using sklearn.svm.OneClassSVM:
> SKLLearnerAdapter(OneClassSVM(kernel='linear'))
>
> I am specifically interested in classifying a task vs. rest which is why
> I aim at one-class.
>
> Thanks for your advices or ideas.
>
> Regards
>
> basile
>
>
> _______________________________________________
> Pkg-ExpPsy-PyMVPA mailing list
> Pkg-ExpPsy-PyMVPA at lists.alioth.debian.org
> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa
>

-- 
Joset A. Etzel, Ph.D.
Research Analyst
Cognitive Control & Psychopathology Lab
Washington University in St. Louis
http://mvpa.blogspot.com/