Hello all,

I would like to perform SVM-RFE (Guyon et al. 2002) in R and have only found
one implementation of this algorithm.  The function belongs
to the MCRestimate package but when I try to use it I encounter a problem
- the function appears to be missing a required package or other function
that I simply cannot find available anywhere.

Here is my session info followed by a simple example with the error message
I receive when using the function varSel.svm.rfe:

> sessionInfo()
R version 2.7.1 (2008-06-23)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] tools     splines   stats     graphics  grDevices utils     datasets
[8] methods   base
other attached packages:
[1] MCRestimate_1.4.0   Biobase_2.0.1       randomForest_4.5-25
[4] pamr_1.38.0         survival_2.34-1     cluster_1.11.11
[7] e1071_1.5-18        class_7.2-42        RColorBrewer_1.0-2
>
> m<-matrix(c(1:16),4,4)
> classes<-c(1,1,0,0)
> varSel.svm.rfe(m,classes)
Loading required package: rfe
Error in varSel.svm.rfe(m, classes) : could not find function "rfe.cv"
In addition: Warning message:
In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return
= TRUE,  :
  there is no package called 'rfe'

Thanks in advance for any help/suggestions,
Elizabeth McClellan
elizabethmcclellan@gmail.com


-- 
Ms. Elizabeth McClellan
Research Assistant
Department of Statistical Science
Southern Methodist University

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