[R] to determine the variable importance in svm

[Liaw, Andy]

The caret package has answers to all your questions. 

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of Neeti
> Sent: Tuesday, October 26, 2010 10:42 AM
> To: r-help at r-project.org
> Subject: [R] to determine the variable importance in svm
> 
> 
> hii everyone!!
> 
> i have two questions:
> 
> 1) How to obtain a variable (attribute) importance using 
> e1071:SVM (or other
> svm methods)?
> 
> 2) how to validate the results of svm? 
> 
> currently i am using the following code to determine the error.
> 
> library(ipred)
> for(i in 1:20) error.model1[i]<-
> errorest(Species~.,data=trainset,model=svm)$error
> summary(error.model1)
> 
> ######################################
> not able to understand errorest result.. if anyone know the 
> better method to
> analyse my result please let me know.
> ###############################################
> 
> library(mda)
> cmat <- confusion(pred.1,species_test)
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> ance-in-svm-tp3013817p3013817.html
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