[pymvpa] RFE and dataset splits

Yaroslav Halchenko debian at onerussian.com
Thu Jun 23 00:32:57 UTC 2011

well, it is indeed weird that it is always 0.5 ... code looks ok

what if you share the details of the dataset: 

print avgds.summary()

what is the cross-validation performance on full featureset using e.g.
SMLR?  could it be indeed that there is no categorical information among
the data or it is too hard to dig it out with RFE

On Wed, 22 Jun 2011, Kimberly Zhou wrote:

>    Hi All,
>    Wondering if anyone has had experience with RFE in PyMVPA 0.6.x? Still
>    trying to figure out RFE and it seems like I must still be missing
>    something... Here's part of what it shows when RFE is in progress:
>    [RFEC] DBG:            Step 0: nfeatures=135168
>    [RFEC] DBG:            Step 0: nfeatures=135168 error=0.5000
>    best/stop=1/0
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Yaroslav Halchenko                 www.ohloh.net/accounts/yarikoptic

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