Re: [R] Support Vector Machines

2009-05-05 Thread excalibur
I see that index is giving me the group for the classification problem. But my problem is not the same. I had a sample X<-rnorm(1000) for example. I don't want to make classification (i have only one group in fact) but i want to estimate the density which generates my sample (like i can do with

Re: [R] Support Vector Machines

2009-05-05 Thread Liaw, Andy
svm() in the e1071 package is an interface to the libsvm code. Look at the link provided in the help page for that function. You will have to read up how density estimation is achieved via one-class SVM. Andy From: excalibur > > In the R-help of the svm function of the package e1071 it's >

Re: [R] Support Vector Machines

2009-05-05 Thread David Winsemius
On May 5, 2009, at 3:49 AM, excalibur wrote: In the R-help of the svm function of the package e1071 it's explained that this function also makes estimation of density. But when i made for example X<-rnorm(1000) m<-svm(X) I just have a binary classification of X like SVM do whereas i want

Re: [R] Support Vector Machines

2009-05-05 Thread excalibur
In the R-help of the svm function of the package e1071 it's explained that this function also makes estimation of density. But when i made for example X<-rnorm(1000) m<-svm(X) I just have a binary classification of X like SVM do whereas i want an estimation of the density which generates our sam

Re: [R] Support Vector Machines

2009-05-04 Thread excalibur
This question is still unanswered. Someone can explain me how use the svm function to make density estimation ? Thanks ... excalibur wrote: > > Hi, > i try to use function svm of package e1071 to estimate a density. > > But if my data are X=(X1,...,Xn) and m<-svm(X) some values of m$SV are

Re: [R] Support Vector Machines

2009-05-04 Thread David Winsemius
On May 4, 2009, at 8:52 AM, excalibur wrote: This question is still unanswered. Unanswered questions are often those which do not comply with the guidelines in the Posting Guide. Many people have gotten tired of either making up examples or of writing "Read the Posting Guide", so they

[R] Support Vector Machines

2008-08-20 Thread excalibur
Hi, i try to use function svm of package e1071 to estimate a density. But if my data are X=(X1,...,Xn) and m<-svm(X) some values of m$SV are less than 0. I don't see how i can get the estimation of the density with this function. Thanks for your help. Rémi -- View this message in context: htt