[Pkg-exppsy-maintainers] New Ridge Regression Classifier

[Per B. Sederberg]

I predict that it will not classify nearly as well as the linear SVM
regression, but good to have around anyway.

I'm actually having a big error with it right now, however, which is
segfaulting python when trying to free some memory.  Both the unit
test and the pylab example (modified to use RidgeReg) run without a
problem, but when I try and use it to train on my real data it
segfaults upon returning from the self._train call:

> /usr/lib/python2.4/site-packages/mvpa/clfs/classifier.py(164)train()
-> result = self._train(dataset)
(Pdb) n
*** glibc detected *** python: free(): invalid pointer: 0x914e5008 ***

I don't see anything wrong in my code, so my current guess is that
it's an error in numpy.

Pretty weird,
Per

On Jan 14, 2008 8:41 PM, Yaroslav Halchenko <debian at onerussian.com> wrote:
> pretty cool ;-) I am yet to test it but that is great to get more and
> more classifiers available ;-)
>
> thanks
>
>
> On Mon, 14 Jan 2008, Per B. Sederberg wrote:
>
> > Hi Everybody:
>
> > I just pushed a new ridge regression classifier.  It seems to work
> > well and is nice and fast.  Let me know what you think and feel free
> > to fix any errors you find.
>
> > Best,
> > Per
>
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>
> --
> Yaroslav Halchenko
> Research Assistant, Psychology Department, Rutgers-Newark
> Student  Ph.D. @ CS Dept. NJIT
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