similar to: cross-validation

Is there any routine to obtain a g-inverse of a matrix in R or S-PLUS? Tapio Nummi University of Tampere Finland -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:

I'm seeing some strange behavior while using the snow package for networked computers. I believe it's caused by name space resolution issues, and would appreciate any suggestions tracking it down. First, is there a way to find out what frame (as in frames in environments, not data frames) a name is being obtained from or put into? Second, how closely does the evaluation environment in

Hi, Newbie question about the pls package. Setup: Mac OS 10.3.9 R: Aqua GUI 1.01, v 2.0.1 I want to get R^2 and Q^2 (LOO and Leave-10-Out) values for each component for my model. I was running into a few problems so I played with the example a little and the results do not match up with the comments in the help pages. $ library(pls) $ data(NIR) $ testing.plsNOCV <- plsr(y ~ X, 6, data =

Using R 1.7.0 I get * checking parcv-manual.tex ... ERROR Could not create DVI version. Although there is no apparent error. The dvi file exists. Possibly there is some problem with my TeX setup, but the following messages don't suggest that either. Here's the full log, which does show some documentation issues: sheep:~$R CMD check --library=.R/library/ src/parcv * checking for working

Greetings, I have been exploring the use of the caret package to conduct some plsda modeling. Previously, I have come across methods that result in a R2 and Q2 for the model. Using the 'iris' data set, I wanted to see if I could accomplish this with the caret package. I use the following code: library(caret) data(iris) #needed to convert to numeric in order to do regression #I

Seems crossval from library(bootstrap) can only be used for leave-one-out and k-fold cross validation? Here is a dumb question, suppose n=80, how to do exactly leave-50-out cross validation? K-fold cross validation is not eligible for this case since n/ngroup is not an integer. Thanks!

Hi, I am trying to make a palaeoenvironmental transfer function using the R package rioja that predicts the water-table (measured as depth to the water table) of an area given the testate amoebae that are found there. I've carried out weighted averaging of the data and am trying to produce a graph that shows the observed water-table versues the model's predicted values. Following the

Dear R helpers I'm attempting to create a matrix of scatterplots with X-Y mean lines and regression lines added to each plot in the matrix. I have managed to create the first plot I would like using scatterplot but have run into an odd result when I use par() to set up the page to take multiple plot. Specifically, the mean and regression lines appear to plot in the second plot window, not

Hi, I was trying to do cross-validation using the crossval function (bootstrap package), with the following code: --------------------------------------------------------------------------------------------------------- theta.fit <- function(x,y){ model <- svm(x,y,kernel = "linear") } theta.predict <- function(fit,x){ prediction <- predict(fit,x)

Hi folks, I'm trying to estimate bias-corrected percentile (BCP) confidence intervals on a vector from a simple for loop used for resampling. I am attempting to follow steps in Manly, B. 1998. Randomization, bootstrap and monte carlo methods in biology. 2nd edition., p. 48. PDF of the approach/steps should be available here: https://wyocoopunit.box.com/s/9vm4vgmbx5h7um809bvg6u7wr392v6i9 If

Hi   I want to do leave-one-out cross-validation for multinomial logistic regression in R. I did multinomial logistic reg. by package nnet in R. How I do validation? by which function? response variable has 7 levels   please help me   Thanks alot Azam [[alternative HTML version deleted]]

Hi all, Has anyone tried to do k-fold cross validation for flexible discriminant analysis ( mda library), for example, using crossval() in bootstrap? The problem is that the function crossval() requires a separate matrix for predictors and another for responses, whereas the function fda(), using the formula argument only. Is there another way of doing k-fold cross validation for functions which

Hello Peter, I'm using a virtual users model in dovecot where all the mail is stored under the same OS user account anyway, so file/dir permissions won't be a problem. The system users I was referring to are actually completely separate user accounts at the moment with their own uid/gid (and passwordless sudo between them), but I guess they could use same uid/gid and just have

I am having some problems adding packages under FreeBSD 2.2.8 and R-0.62.2 I have included the output of "uname -a" below first: == FreeBSD stiegl.niksun.com 2.2.8-RELEASE FreeBSD 2.2.8-RELEASE #0: Thu Dec 10 10:29:07 EST 1998 ath at stiegl.niksun.com:/scratch/obj/compile/STIEGL i386 == The CC in use is gcc (not egcs). The install failed as follows: == stiegl> R INSTALL

Hello, Will I be breaking something if I have two users share the same home and/or mail_location (maildir format) in dovecot? Mail will only be delivered to the primary user, the other would be used every now and then to login via imap (webmail). This would be on a CentOS 7 box running dovecot from the packaging system, i.e. dovecot-2.2.10-8.el7 currently. The reason I'd like to do this

Hello Tapia, You are going to great lengths :) I assume, that PAM working means, "user" and "otheruser" are the names of system-users with the same uid, home etc? Then I do not see, why dovecot, all defaults and authenticating against PAM won't work out of the box, shouldn't it? Peter Am 2017-09-23 um 22:08 schrieb Tapio Sokura: > Hello, > > Will I be

Hello, I'm having problems with expire-tool in Dovecot 1.2.6 not finding the mailboxes. I had mail_location = mbox:/var/spool/dovecotmail/%d/%n/mails:INDEX=/var/spool/dovecotmail/%d/%n/indexes in dovecot.conf, but that doesn't work with expire-tool. So I commented that out from dovecot.conf, all the data is in a database anyway. A userdb lookup returns the following for userid at

On 11/16/16, 8:55 AM, "openssh-unix-dev on behalf of Juha-Matti Tapio" <openssh-unix-dev-bounces+uri=ll.mit.edu at mindrot.org on behalf of jmtapio at ssh.com> wrote: On Wed, Nov 16, 2016 at 12:54:44PM +0000, Blumenthal, Uri - 0553 - MITLL wrote: > I find this approach very bad in general. > > PKCS#11 standard says that *private* keys should not be

UPS: PowerWalker VFI 3000RT LCD CentOS 6.5, nut installed from RPM package: nut-2.6.5-2.el6.x86_64 nut-client-2.6.5-2.el6.x86_64 Driver: blazer_usb Problem description: USB device "loops" when starting blazer_usb. USB device permissions are ok. Receives some information. Error messages: "failed to claim USB device: could not claim interface 0: Device or resource busy"

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello. I''m having a quite big problem with xen and I''m pretty much stuck with it by myself, so hopefully someone can help me out with this. Symptoms look like this: tvsrv1:~# xm create ns1 Using config file "/etc/xen/ns1". Error: Creating domain failed: name=ns1 And relevant parts from the xend.log: [2010-02-02 11:35:18