Hi Yarik,<div><br></div><div>Thanks! The pointer to that test is very helpful indeed.</div><div><br></div><div>Best,</div><div>Mike<br><br><div class="gmail_quote">On Mon, Nov 1, 2010 at 2:02 PM, Yaroslav Halchenko <span dir="ltr"><<a href="mailto:yoh@dartmouth.edu">yoh@dartmouth.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi Mike,<br>
<br>
sorry that it causes you troble... but RFE is indeed somewhat difficult<br>
to figure out...<br>
<br>
but before anything:<br>
have you seen<br>
<a href="http://dev.pymvpa.org/featsel.html#recursive-feature-elimination" target="_blank">http://dev.pymvpa.org/featsel.html#recursive-feature-elimination</a><br>
<br>
also look may be at<br>
mvpa/tests/test_rfe.py: def __test_matthias_question(self):<br>
which has one of RFE structures<br>
<br>
in general classifier with RFE as feature selection should be treated as<br>
any other classifier<br>
<br>
also -- do you really think that RFE is necessary in your case? may be<br>
some simpler feature selection or SMLR would do?<br>
<br>
P.S. it would be of greater benefit to everyone if we continue this<br>
communication on the mailing list, if you don't mind of cause<br>
<div><div></div><div class="h5"><br>
On Mon, 01 Nov 2010, Michael Waskom wrote:<br>
<br>
> Hey Yarik,<br>
<br>
> I'm trying to figure out how to use the RFE class in pymvpa 0.5dev.<br>
> Sadly, there doesn't seem to be much in the (otherwise<br>
> super-helpful) documentation about it. I get all of the parameters,<br>
> but I'm not quite sure how it might fit into a typical analysis, and<br>
> I'm very interested in trying out some recursive feature selection. Do<br>
> you have a simple use case you could put up as a gist (or elsewhere) so<br>
> I can get the basic idea? Nothing too didactic is required.<br>
<br>
> Thanks!<br>
<br>
> Mike<br>
<br>
</div></div><font color="#888888">--<br>
Yaroslav O. Halchenko<br>
Postdoctoral Fellow, Department of Psychological and Brain Sciences<br>
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755<br>
Phone: +1 (603) 646-9834 Fax: +1 (603) 646-1419<br>
WWW: <a href="http://www.linkedin.com/in/yarik" target="_blank">http://www.linkedin.com/in/yarik</a><br>
</font></blockquote></div><br></div>