Re: [Scikit-learn-general] LarsLasso and Lasso normalize option

2012-11-10 Thread Alexandre Gramfort
I am bit relunctant to support normalize as to be consistent it should be done everywhere including for example in SVM models. Also normalization with unit standard deviation is not always what you want to do: if you have an outlier coefficient it will collapse the good values to 0. hence you might

Re: [Scikit-learn-general] LarsLasso and Lasso normalize option

2012-11-10 Thread Gael Varoquaux
On Wed, Oct 31, 2012 at 06:10:13PM +0100, Alexandre Gramfort wrote: > fine with me but do you push the logic further to any linear estimator ? > For example in Ridge we also have normalize=False by default. Should normalize be on by default in Ridge, or should it not, based on your experience of

Re: [Scikit-learn-general] API for multi-sample "documents"

2012-11-10 Thread Gael Varoquaux
Hi Vlad, This is a problem that I have often. In my settings, the 'document' would be a subject, and I might have multiple observations (time points) per subject. In practice, I have found that there are 2 efficient ways of solving it, and that both approaches have pros and cons: 1) Concatenate

Re: [Scikit-learn-general] Error in installing scikit-learn

2012-11-10 Thread Denis-Alexander Engemann
Hehe.. Just for logging purposes: I saw theses old SDKs under /Developer which were conflicting with the recent 10.8 SDK from /Applications So sudo /Developer/Library/uninstall-devtools --mode=all did the trick. Denis ---

Re: [Scikit-learn-general] Error in installing scikit-learn

2012-11-10 Thread Gael Varoquaux
On Sat, Nov 10, 2012 at 12:54:19PM +0100, Denis-Alexander Engemann wrote: > (sometimes just posting it helps to get it ;-). Yes, it happens to me too. Glad that you got it sorted! Gaƫl -- Everyone hates slow websites. S

Re: [Scikit-learn-general] Error in installing scikit-learn

2012-11-10 Thread Denis-Alexander Engemann
Ok... I think I got it. Xcode path is heavily messed up... Thanks though (sometimes just posting it helps to get it ;-). D

Re: [Scikit-learn-general] Error in installing scikit-learn

2012-11-10 Thread Denis-Alexander Engemann
Hi Folks, @agramfort & @amueller -- unfortunately getting my 32/64 bit issue fixed before getting back to #1350 was not a matter of a few minutes. Instead I found myself somewhere here, related to this issue. I gave up my macports a few days a ago replaced with 32bit and then 64bit EPD, since th

Re: [Scikit-learn-general] Error in installing scikit-learn

2012-11-10 Thread Gael Varoquaux
Hi Freddie, On Thu, Nov 08, 2012 at 08:13:25PM -0800, Freddie Li wrote: > == > ERROR: sklearn.metrics.cluster.tests.test_supervised.test_perfect_matches > -- > Tr