Re: [R] Hello all, How can I get corss-validation MSE of SVM in e1071?

2009-12-21 Thread Max Kuhn
> The caret package is so good, I am learning it, but one problem is that > nearZeroVar function can be used to identify near zero–variance variables and > it only identify, how can I remove those variables that were identify, > because I have many zero- or near zero- ones, it is not realistic

Re: [R] Hello all, How can I get corss-validation MSE of SVM in e1071?

2009-12-20 Thread bbslover
”¶ä»¶äºº:bbslover 主题:Re: [R] Hello all, How can I get corss-validation MSE of SVM in e1071? You can get this using the caret package. There are a few package vignettes that come with the package and a JSS article http://www.jstatsoft.org/v28/i05/paper about the package. Max On Fri, D

Re: [R] Hello all, How can I get corss-validation MSE of SVM in e1071?

2009-12-19 Thread bbslover
thank you for your help, caret package is so powerful , it can do many things. I now, need learn how to apply to my problems. Max Kuhn wrote: > > You can get this using the caret package. There are a few package > vignettes that come with the package and a JSS article > > http://www.jstatsoft

Re: [R] Hello all, How can I get corss-validation MSE of SVM in e1071?

2009-12-18 Thread Max Kuhn
You can get this using the caret package. There are a few package vignettes that come with the package and a JSS article http://www.jstatsoft.org/v28/i05/paper about the package. Max On Fri, Dec 18, 2009 at 12:26 PM, bbslover wrote: > > as known, svm need tune some parameters like  cost,gamm

[R] Hello all, How can I get corss-validation MSE of SVM in e1071?

2009-12-18 Thread bbslover
as known, svm need tune some parameters like cost,gamma and epsilon to get better performance,but one question appear, how can i monitor the performance . generally speaking ,we chose the cross-validation MSE in the training set, but It seems svm can not return the cross-validation MSE value, we