I think just moving from a train set to a test set would be problematic for 
small n_samples.

Vlad

On Apr 17, 2012, at 15:48 , Olivier Grisel wrote:

> Le 17 avril 2012 05:39, Gael Varoquaux <[email protected]> a 
> écrit :
>> On Tue, Apr 17, 2012 at 03:35:26PM +0300, Dimitrios Pritsos wrote:
>>>    If you would like the opinion of user (i.e. me) I think this is the best
>>>    solution for intuitive use of the Lib. And having scale_C=False as
>>>    default.
>> 
>> For small number of samples, _it does not work_. Period, there is not
>> libsvm or not libsvm convention debate.
> 
> _it does not work_ => grid search / model selection does not work. I
> am pretty sure the vast majority of our users do not do systematic
> grid search for C either unfortunately :(
> 
> -- 
> Olivier
> http://twitter.com/ogrisel - http://github.com/ogrisel
> 
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