search for: svmpath

Hello, I have two questions. The svmpath package provides a svmpath function: --- fit <- svmpath(xtrain, ytrain, kernel.function = radial.kernel, param.kernel = 0.8) --- 1) How to get the optimal lambda value out of this result? The svmpath package also provides a predict function: --- ytest <- predict(fit, xtest) --- How to get a...

How can I get the list of non-zero features from svmpath at any given lambda? All I get is following information and information about what features were selected. In Iris example, we have 4 features and 60 cases. In my own example which is 200cases by 300 features, I can't figure out how to print the list of non-zero (beta) or features from svmpath....

Hi everyone, I cannot install package "svmpath" on R 2.8.1 on Redhat Linux .In fact I cannot install package externally.I am new to Linux so it would be of great help if you all can help me out. Regards, Subhajit. [[alternative HTML version deleted]]

...r but I think i've saw this function and i'm not sure that we can make density estimation with this but only classification.  : Objet: Re : [R] Support Vector Machines Cc: "R Maillist" <r-help@stat.math.ethz.ch> Date: Mardi 5 Mai 2009, 16h43 there is a SVM function in svmpath by Trevor Hastie. Before use it take time to read this http://www-stat.stanford.edu/~hastie/Papers/svmpath.pdf If you install then svmpath library ! run the attach source file. Justin BEM BP 1917 Yaoundé Tél (237) 99597295 (237) 22040246 ________________________________ À : r-help@r-proj...

...e install fails, The binary install yields > Warning in install.packages(file.choose(), , NULL, type = "mac.binary") : argument 'lib' is missing: using /Users/neely/Library/R/library > and does not fix the problem. The same problem occurs with some packages (e1071, svmpath) but not others (gdata, gplots, gtools). Any advice would be greatly appreciated. Neely Atkinson eatkinso at mdanderson.org 713-792-2619

Hi, I'm experimenting with a few learners that require a matrix as their input. (Currently svmpath, vbmp, etc.) I currently have a dataframe with 50 columns and 20,000 rows. I tried using: x <- as.matrix(my_data.frame) If I then as, "is.matrix(x)", I get TRUE. However everywhere I've tried to use the matrix returns errors. Is there a step I'm missing? Thanks! -N

Hi List I'm running a series of mixed models using lme, and I wonder if there is a way to sort them by AIC prior to testing using anova (lme1,lme2,lme3,....lme7) other than by hand. My current output looks like this. anova (lme.T97NULL.ml,lme.T97FULL.ml,lme.T97NOINT.ml,lme.T972way.ml,lme.T97fc. ml, lme.T97ns.ml, lme.T97min.ml) Model df AIC BIC logLik

I use tune.svm to tune gamma and cost for my training dataset. I use PC, it runs very slowly. Does anyone know how to make it faster? Aimin

Dear All, I am using "Caret"package for SVM regression and elastic net regression . I can get the final fiited vs observed values. How can I get the coefficients? Any ideas? Thanks Alex [[alternative HTML version deleted]]

Dear R-users. I eventually bought myself a new computer with the following characteristics: Processor AMD ATHLON 64 DUAL CORE 4000+ (socket AM2) Mother board ASR SK-AM2 2 Ram Corsair Value 1 GB DDR2 800 Mhz Hard Disk WESTERN DIGITAL 160 GB SATA2 8MB I'm a newcomer to the Linux world. I started using it (Ubuntu 7.10 at work and FC4 on laptop) on a regular basis on May. I must say I'm

Dear R-users. I eventually bought myself a new computer with the following characteristics: Processor AMD ATHLON 64 DUAL CORE 4000+ (socket AM2) Mother board ASR SK-AM2 2 Ram Corsair Value 1 GB DDR2 800 Mhz Hard Disk WESTERN DIGITAL 160 GB SATA2 8MB I'm a newcomer to the Linux world. I started using it (Ubuntu 7.10 at work and FC4 on laptop) on a regular basis on May. I must say I'm

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CRAN (and crantastic) updates this week New packages ------------ * bdoc (1.0) Michael Anderson http://crantastic.org/packages/bdoc This package contains a function that will classify DNA barcodes as well as a few test and reference data sets. * bdsmatrix (1.0) Terry Therneau http://crantastic.org/packages/bdsmatrix This is a special case of sparse matrices, used by coxme and

...o this: models using S4 classes won't allow adding new objects. For SVMs, you haven't said what kernel type you used. caret uses kernel methods from kernlab (for no other reason that I like the package). The only package that I know gives the *regression* coefficients for linear kernels is svmpath (there could be others). If you want the SV coefficients (typically denoted by alpha), kernlab has a slot called coef that you can use. You should really provide more information for your questions to be answered well. -- Max ------------------------------ Message: 14 Date: Mon, 4 May 2009...