On 03/16/2012 11:12 PM, James Bergstra wrote: > I was also recently bit by this scale_C business. It looks like the > decision to make scale_C=True the un-changeable default has already > been made, but when this is done *PLEASE* make this abundantly clear > in the documentation... my understanding was that the C in the SVM > equation means the thing that Ian referred to, and which libSVM uses, > and shogun, etc... rather than this "conveniently scaled" > alternative. Maybe this new parameter should be renamed to something > other than "C" so that SVC(C=foo) fails rather than computes a > surprising thing? Anyway, I'm sure this is off-topic, but if someone > could point me to a more appropriate discussion thread I'd appreciate > it.
Hi James. There was some discussion on this going on pretty invisible here: https://github.com/scikit-learn/scikit-learn/commit/b3839837cf949db8e9122807578ebce6bf3d6fb4#commitcomment-1022876 Maybe we should open an issue on this? Alex wanted to change the default behavior for "C". I'm not sure if this will actually make everything ok again ;) (Also I'm not sure if this was maybe already merged?) I have to say that I am also not entirely happy with this step but changing the API _again_ would be ... well... pretty unfortunate. Not sure what others think on this... Cheers, Andy ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Scikit-learn-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
