similar to: Bootstrap error rate for logistic disrmination model

Hi, i am trying to find an appopriate R function which will estimate the bias associated with the apparent error rate of my logistic discriminant model (groups = 2, covariates = 3). I have read that bootstrapping can be used for this. Does anyone have any ideas on how I can go about doing this? I have quite a small sample size for one of my groups and I realize this may cause some problems, but

Hi, What does this mean when I have something like: > qda.boot <- boot(train, qda.bootstrap, R = 500) Error in qda.default(structure(data.matrix(x), class = "matrix"), ...) : Rank deficiency in group M with my qda.bootstrap() looks something like: > qda.bootstrap <- function(data, index) { + boot.qda <- qda(x = data[index, 2:9], group = data[index, 1]) + qda.pred

Amigos de la erre. He creado mi primer bucle con for para entrenar unos modelos con GAM. La respuesta es quasipoisson porque estoy trabajando con densidades de peces. Sin embargo, tengo un problema, no se muy bien como añadir el offset a la formula siguiente cuando creo el bucle. GAM.A1 <-gam ((DYO)~s(DMA,k=4)+ s(WOD,k=4)+s(CIN,k=4)+s(DRA,k=4)+s(DBR,k=4)

Hi dear all, suppose that s is a statistic code; i have a matrix (x) which has 7 columns (1=x1,2=x23=x3,4=x4,5=x5,6=x6 and7=y) and has 20 rows. i want to do linear reggression like reg<-lm(x[,7]~1+x[,1]+x[,2]+.......+x[,6]) but i want to do delete i th row for nrows times and create regression model like above and compute each models' "s" statistics and list them. but i could

Amigos de la erre. He creado mi primer bucle con for para entrenar unos modelos con GAM. La respuesta es quasipoisson porque estoy trabajando con densidades de peces. Sin embargo, tengo un problema, no se muy bien como añadir el offset a la formula siguiente cuando creo el bucle. GAM.A1 <-gam ((DYO)~s(DMA,k=4)+ s(WOD,k=4)+s(CIN,k=4)+s(DRA,k=4)+s(DBR,k=4)

Hi, for a test lab, I'm trying to write a small shell script that will eradicate all information regarding a special host from the known_hosts file. Unfortunately, it is quite non-trivial to find out what ssh doesn't like with a host. ssh says which line in known_hosts has the offending key, but ssh-keygen -R doesn't take a line number. Am I using an undocumented interface when I

Hi Everyone, I need to be able to create a summary report of all relevent syslog entries that is then emailed weekly. The idea I have for this is to pipe the syslog entries (logged from many hosts UNIX-Like and Windows) out to a a named pipe (say /var/log/logpipe) that is then read periodically by a perl script started from cron. The perl script then filters the log entries (probably using

Branislav Baca wrote the following: Hello, I'm using postfix(2.4.5) and dovecot(1.0.5), and till now I have been using postfix deliver agent. Now I have tried to reconfigure postfix to use the dovecot LDA, but I'm getting some strange error: Try this: socket listen { master { path = /path/to/run/dovecot/auth-master mode = 0600 user =

I haven't received any messages after 3/27/06 and I have tried to resub twice without any success? I miss the flood of messages, and I have other stupid questions to ask ;~) Marty

[markdown format] I'm glad to introduce you the new package aVirtualTwins. This package is an adaptation of VirtualTwins method of subgroup identification from [Foster, J. C., Taylor, J. M.G. and Ruberg, S. J. (2011)](http://onlinelibrary.wiley.com/doi/10.1002/sim.4322/abstract). ### Explanation Virtual Twins has been created to find subgroup of patients in a random clinical trial with

[markdown format] I'm glad to introduce you the new package aVirtualTwins. This package is an adaptation of VirtualTwins method of subgroup identification from [Foster, J. C., Taylor, J. M.G. and Ruberg, S. J. (2011)](http://onlinelibrary.wiley.com/doi/10.1002/sim.4322/abstract). ### Explanation Virtual Twins has been created to find subgroup of patients in a random clinical trial with

Hello! I have written a script which attaches some USB tokens as hostdev devices to (qemu) VMs managed by libvirt. This works fine as long as I call the script manually. But what I really want to do, is run this scrip from a startup hook, so that whenever a Vm is started, it looks if there are appopriate tokens available for attachment. But when the script is run from the hook, it (along with the

This will be the last Shorewall release for a while as I''m going to be focusing on Documentation. In this release: 1. Empty and invalid source and destination qualifiers are now detected in the rules file. It is a good idea to use the ''shorewall check'' command before you issue a ''shorewall restart'' command be be sure that you don''t

hi, does anyone already have implemented in R the Best-Basis Algorithm or the Local Discriminant Basis Algorithm using wavelets? for those interested: both algorithms are described in N. Saito, R. R. Coifman: "Local Discriminant Bases" (SPIE vol. 2303, 1994) and can be downloaded here: ftp://pascal.math.yale.edu/pub/wavelets/papers/ldb.ps.gz thanks, till -- ALL THESE WORLDS

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:40 Security Advisory FreeBSD, Inc. Topic: fts(3) routines contain race condition Category: core Module: libc Announced: 2001-06-04

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:40 Security Advisory FreeBSD, Inc. Topic: fts(3) routines contain race condition [REVISED] Category: core Module: libc Announced:

Here''s my comments for the preliminary ZFS Crypto review. - Dan Webrev: http://cr.opensolaris.org/~darrenm/zfs-crypto-gate/webrev/ General comments: DEA-1 - SCCS keywords need to be removed DEA-2 - Copyright updated ------------------------------------------------------------------ usr/src/lib/libcryptoutil/common/keyfile.c pkcs11_read_data() This code in pkcs11_read_data() scares

Dear list, I'm running windows xp with R 2.12.0. I'm trying to load a excel spreadsheet into R using the xlsx package. I posted my code below with the error I get. > res <- read.xlsx("Copy of test_excel_input_data.xlsx", 6) Error in .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod", cl, : java.lang.IllegalStateException: Cannot get

Hola, buen día. Una consulta, no sé conozco en extenso todas las bondades de R, pero quería saber exactamente si hay algún paquete que permita realizar análisis ecológicos específicamente para comunidades marinas. Existen muchos índices, indicadores, estimadores en general en muchos programas que están a nivel de usuario, pero quería saber si todos estos pueden estar ya disponibles en R.

Is there a way i can change my subcription email address, without unsbubbing and resubbing myself? Cheers, Mathew -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20030221/c9149135/attachment.html>