Re: [R] memory problems when combining randomForests [Broadcast]

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Tue 01 Aug 2006 - 02:54:46 EST


It's the 5th paper on his web page.
http://www-stat.stanford.edu/~jhf/ftp/isle.pdf
<http://www-stat.stanford.edu/~jhf/ftp/isle.pdf>
 

Cheers,
Andy


From: Weiwei Shi [mailto:helprhelp@gmail.com] Sent: Monday, July 31, 2006 11:38 AM
To: Eleni Rapsomaniki
Cc: Liaw, Andy; r-help@stat.math.ethz.ch Subject: Re: [R] memory problems when combining randomForests [Broadcast]

Hi, Andy:

What's the Jerry Friedman's ISLE? I googled it and did not find the paper on it. Could you give me a link, please?

Thanks,

Weiwei

On 7/31/06, Eleni Rapsomaniki <e.rapsomaniki@mail.cryst.bbk.ac.uk
<mailto:e.rapsomaniki@mail.cryst.bbk.ac.uk> > wrote:

Hello

I've just realised attachments are not allowed, so the data for the example in
my previous message is:

pos.df=read.table("
<http://www.savefile.com/projects3.php?fid=6240314&pid=847249&key=119090>
http://www.savefile.com/projects3.php?fid=6240314&pid=847249&key=119090", header=T)

neg.df=read.table("
<http://fs07.savefile.com/download.php?pid=847249&fid=9829834&key=362779>
http://fs07.savefile.com/download.php?pid=847249&fid=9829834&key=362779"", header=T)

And my last two questions (promise!):
The first is related to the order of columns (ie. explanatory variables). I get
different order of importance for my variables depending on their order in the
training data. Is there a parameter I could fiddle with (e.g. ntree) to get a
more stable importance order?

And finally, since interactions are not implemented, is there another method I
could use in R to find dependencies among categorical variables? (lm doesn't accept categorical variables).

Many thanks
Eleni Rapsomaniki
Birkbeck College, UK



R-help@stat.math.ethz.ch <mailto:R-help@stat.math.ethz.ch> mailing list https://stat.ethz.ch/mailman/listinfo/r-help
<https://stat.ethz.ch/mailman/listinfo/r-help>
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
<http://www.R-project.org/posting-guide.html>
and provide commented, minimal, self-contained, reproducible code.
-- 
Weiwei Shi, Ph.D

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III



------------------------------------------------------------------------------

------------------------------------------------------------------------------
	[[alternative HTML version deleted]]

______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Tue Aug 01 03:20:36 2006

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Tue 01 Aug 2006 - 04:19:50 EST.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.