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2011 Oct 14
1
Party package: varimp(..., conditional=TRUE) error: term 1 would require 9e+12 columns
...r this reason I would like to follow the advice of
Strobl et al. (2008) and try the authors' conditional variable importance
measure. This is implemented in the party package by calling varimp(...,
conditional=TRUE). Unfortunately, when I call that on my forest I receive
the error:
> varimp(myforest, conditional=TRUE)
Error in model.matrix.default(as.formula(f), data = blocks) :
term 1 would require 9e+12 columns
Does anyone know what is wrong?
I noticed a post in June 2011 where a user reported this message and the
ultimate problem was that the importance measure was being conditioned on...
2011 Oct 17
0
Party package: varimp(..., conditional=TRUE) error: term 1 would require 9e+12 columns (fwd)
...e
> of
> Strobl et al. (2008) and try the authors' conditional variable
> importance
> measure. This is implemented in the party package by calling varimp(...,
> conditional=TRUE). Unfortunately, when I call that on my forest I
> receive
> the error:
>
>> varimp(myforest, conditional=TRUE)
> Error in model.matrix.default(as.formula(f), data = blocks) :
> term 1 would require 9e+12 columns
>
> Does anyone know what is wrong?
>
Hi Jason,
the particular feature doesn't scale well in its current implementation.
Anyway, thanks for looking up previ...
2004 Apr 05
3
Can't seem to finish a randomForest.... Just goes and goe s!
When you have fairly large data, _do not use the formula interface_, as a
couple of copies of the data would be made. Try simply:
Myforest.rf <- randomForest(Mydata[, -46], Mydata[,46],
ntrees=100, mtry=7)
[Note that you don't need to set proximity (not proximities) or importance
to FALSE, as that's the default already.]
You might also want to use do.trace=1 to see if trees are actually being...
2004 Dec 06
0
errors from ads_krb5_mk_req errors and util_sock.c:send_smb
...and no passwords seem to work, and I see errors like:
client connection log
lib/util_sock.c:send_smb(647)
Error writing 4 bytes to client. -1. (Connection reset by peer)
winbindd log
ibsmb/clikrb5.c:ads_krb5_mk_req(390)
ads_krb5_mk_req: krb5_get_credentials failed for actdir05$@MYFOREST.MYDOMAIN.COM (Cannot find KDC for requested realm)
Details and testing results listed below:
----------------------------------------------
SAMBA ON REDHAT Advance Server 3 saga,
as member server in native AD with winbind
----------------------------------------------
1st Problem: Bug in RedHat...
2004 Apr 23
1
Extracting the MSE and % Variance from RandomForest
Several ways:
1. Read ?randomForest, especially the `Value' section.
2. Look at str(myforest.rf).
3. Look at print.randomForest.
If the forest has 100 trees, then the mse and rsq are vectors with 100
elements each, the i-th element being the mse (or rsq) of the forest
consisting of the first i trees. So the last element is the mse (or rsq) of
the whole forest.
HTH,
Andy
> From: Davi...
2004 Apr 05
2
Can't seem to finish a randomForest.... Just goes and goes!
...ts. Try reducing the
number of levels to something reasonable (or for a first shot: remove
this variable from the learning sample).
Best,
Torsten
> DV seems to need identifying as a factor to force class trees over
> regresssion:
>
> >Mydata$V46<-as.factor(Mydata$V46)
> >Myforest.rf<-randomForest(V46~.,data=Mydata,ntrees=100,mtry=7,proximi
> >ties=FALSE
> , importance=FALSE)
>
> 5 hours later, R.bin was still taking up 75% of my processor. When
> I've tried this with larger data, I get errors referring to the buffer
> (sorry, not in front of m...
2004 Apr 03
1
Re: R-help Digest, Vol 14, Issue 3
At 12:01 03/04/04 +0200, you wrote:
>Content-Transfer-Encoding: 8bit
>From: solares at unsl.edu.ar
>Precedence: list
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>Cc:
>To: R-help at stat.math.ethz.ch
>Date: Fri, 2 Apr 2004 12:47:48 -0300 (ART)
>Message-ID: <50155.209.13.250.66.1080920868.squirrel at inter17.unsl.edu.ar>
>Content-Type: text/plain;charset=iso-8859-1
>Subject: [R] convert