On 02.03.2010 15:41, Häring, Tim (LWF) wrote:
Hello !

I`m using SVMs for multi-class classification problems. Therefore I`m using the svm() 
function in the package "e1071".
If I use svm(...type="C-classification") everything works fine. But if I want to use 
nu-SVM with svm(..., type="nu-classification", nu=0.5) R crashes immediately. No error 
message - just crash.

Did anybody had the same problem and maybe a solution?
I`m using R 2.10.0 and the latest Version of e1071


Maybe for your unstated OS with unstated version of e1071 on an outdated version of R without a reproducible example given.

For my WinXP, R-2.10.1, e1071 1.5-22 I get:

library(e1071)
data(iris)
model <- svm(Species ~ ., data = iris, type="nu-classification")
model

#Call:
#svm(formula = Species ~ ., data = iris, type = "nu-classification")
#
#
#Parameters:
#   SVM-Type:  nu-classification
# SVM-Kernel:  radial
#      gamma:  0.25
#         nu:  0.5
#
#Number of Support Vectors:  103

Uwe Ligges





Thanks
TIM

BTW: Using the LibSVM wrapper in Weka the same happens. Maybe there is a 
problem in the LibSVM code...

-----------------------------------------------------------------------------------
Tim Häring
Bavarian State Institute of Forest Research
Department of Forest Ecology
Hans-Carl-von-Carlowitz-Platz 1
D-85354 Freising

E-Mail: tim.haer...@lwf.bayern.de
http://www.lwf.bayern.de

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

Reply via email to