Displaying 20 results from an estimated 200 matches similar to: "logistic regression model validation through bootstrapping"
2002 Oct 10
2
multiple sessions to same destination
Hi All,
I had a look in archives but no joy.
I just want to know before i deploy - if there is any problem with having
multiple rsync sessions from many source locations all to same destination
server ( all copying to different file systems obviously ) ?? Its jusat that
i see on the destination machine a process rsync -server being called
whenever a client connects.
Thanks !
Laurence
2012 Nov 20
1
parApply computing
I'm using /parApply/() function in "snow" package for parallel computing
(boostrapping repeating calculation), as the follows:
MyBoostrapping <- function( i ){
.....
}
cl <- makeCluster( ncluster, type = "SOCK")
i.circle <- as.matrix( 1:128, , 1)
parApply( cl, i.circle, 1, FUN = MyBoostrapping)
It works.
However, I want to set more than one arguments to
2008 Sep 10
1
bootstrapping - number of items to replace is not a multiple of replacement length
Hello,
I'm new to boostrapping and I'd need some help to understand the error
message that pops up when I run my script.
I have a data.frame with 73 lines and 21 column.
I am running a stepwise regression to find the best model using the R
function "step".
I apply bootstrapping to obtain model coefficients.
This is my script:
# "datare80" is the name of the
2002 Nov 18
5
order and rm()
Hello all. I have two small questions in one post, for the sake of brevity.
1. I have some objects that I want to delete. I have the line:
rm (c (channelheader, paste ("channel", 1:3, sep="")))
I have tried a few variations, including list=, but cannot figure it out. In
SAS, I can use a ':' as a wildcard. Is there any equivalent in R?
2. Is there any possible was to
2004 Feb 13
1
parametric bootstrap and computing factor scores
We have a project on which we need to compare various methods for
computing factor scores. Are there any R routines available that do
parametric bootstrap or compute factor scores?
2003 Dec 18
1
RSPerl
If anyone can help it would be very much apreciated...
System RedHat 9
R installed as
# ./configure --enable-R-shlib
# make
# make install
and R seems to work fine ...
Then I do
# R INSTALL --clean --configure-args='--with-in-perl'
RSPerl_0.5-7.tar.gz
# export R_HOME=/usr/local/lib/R
# cd /usr/local/lib/R/library/RSPerl/examples/
# perl -I
2016 Oct 17
4
unable to compile llvm with gcc 4.7.4
Just for the interest of discussion, I find it completely weird and
interesting that GCC needs to build itself 3 times to fully bootstrap. Has
there been any interest in looking at a single compile build? I don't
exactly know the limitations, but my naive thinking is that C++14 compiler
source parsed by C++14 capable compiler and codegen'd to C99 (or older)
source should make it compilable
2016 Jul 31
2
strange behavior in 'inherits' check for loaded S4 object
(Just returning from the "wilds" of Canada, so not able to comment on the specifics, but ...)
There is a basic point about generic functions that may be related to the "private" class question and my earlier remarks that Martin alluded to.
R (and S4 before it) allows packages to define methods for a generic function in another package. Say, for plot() in graphics.
The
2006 Oct 13
3
Rmpi performance
Dear R users,
we are trying to do some parallel computing using library(snow).
In particular we have a cluster with 3 nodes
>cl <- makeCluster(3, type = "MPI")
3 slaves are spawned successfully. 0 failed.
and we want to compute the function op_mat (see below) first with the
master and then with the cluster using system.time for checking the
computational performance.
2006 Jul 28
4
Kickstart from floppy falling into regular install
I took my anaconda-ks.cfg file, cp to ks.cfg and copied to a floppy
The isos have been copied to an ftp server. So I had the following
lines in my ks.cfg
intall
url ftp://10.1.1.1// (yes the ftp server's directory is the Centos
directory)
This is along with all the appropriate network command to get the
ethernet setup.
I issue the linux ks=floppy (also tried linux
2008 Jun 25
0
pvclust:a general and a specific question
I realize questions about packages should go to the package maintainer,
but perhaps I have an old email address (suzuki3 at is.titech.ac.jp)
Also I have both a general, and a specific, question.
1) General question: i've used pvclust before to assess significance of
clusters and got reasonable results. However, on a new data set (see
below) the results seem odd. I wonder if pvclust is a
2009 Jul 01
0
double bootstrap
Hi All,
I would like to do double boostrapping to estimate 95% CI coverage.
So, I can only need to estimate 95% confidence interval from each
bootstrapped sample.
Since we don't have a closed form of 95% CI, in order to get 95% CI for each
sample, we need to use bootstrapping.
For outer bootstrapping, I used boot function in library(boot).
How can I add double bootstrap inside the function.
2012 Jan 06
0
Bootstrapping nlme models
Hi, Let me start my saying that I am new to R hence my grasp of the
appropriate used of R coding is undoubtedly way behind many on this forum.
I am trying to use boostrapping to derive errors around my parameter
estimate for the fixed effects in the following model. It is simply
estimating the number of times an animal might cross a road based on the
road's distance from a stream. I have
2006 Jan 11
0
Permutation columns or boostrapping
Hi,
I want to permutate the following matrix and replace permutated columns. Is
it possible to control the number of columns permutated. Let's say I only
want to permute two columns. Can i do that with the sample method or should
i any bootstrapping method ?? I'm not sure this is the best statisticaly
way of doing it...??
So the idea behind is to ramdonly generate 1000 permutated
2016 Jul 29
2
strange behavior in 'inherits' check for loaded S4 object
I should add one more item that may be related here -- calling
'methods:::.requirePackage' returns a different result based on
whether the package namespace is already loaded or not.
If the package namespace is not loaded, the package is loaded and
attached, and the package environment is returned:
> methods:::.requirePackage("digest")
Loading required package:
2013 Oct 08
2
[LLVMdev] basic-arm-instruction tests fail on trunk
Hi Renato,
On Tue, Oct 8, 2013 at 3:57 PM, Renato Golin <renato.golin at linaro.org>wrote:
> On 7 October 2013 18:33, İsmail Dönmez <ismail at donmez.ws> wrote:
>
>> This is with Linux on BeagleBone Black (Cortex-A8), regressed recently:
>>
>
> Hi Ismail,
>
> Are you running this regularly? Do you know which commit regressed? Or at
> least a window?
2016 Oct 17
4
unable to compile llvm with gcc 4.7.4
Hi,
The problem is modern c++. I can have a reasonable system boostrape-ed
with (tinycc/alternative C compiler), but only in the gcc world since
a modern c++ compiler is only bootsrape-able from near any C compiler
there. clang and llvm are unable to do it. That why I would need to
get 2 gccs: "any C compiler" -> gcc 4.7.4 -> gcc recent_version ->
llvm.
On Fri, Oct 14, 2016 at
2016 Oct 13
2
unable to compile llvm with gcc 4.7.4
On Wed, Oct 12, 2016 at 07:15:39PM +0100, Renato Golin wrote:
> On 12 October 2016 at 18:37, <sylvain.bertrand at gmail.com> wrote:
> > Suggestion is not clear answer. How such a decision taken? Is there a board of
> > people which have to vote to valid the choice of minimal gcc (and clang) version
> > effective?
>
> We don't have such process, unfortunately.
2016 Oct 12
2
unable to compile llvm with gcc 4.7.4
On Wed, Oct 12, 2016 at 04:15:44PM +0100, Renato Golin wrote:
> On 12 October 2016 at 14:34, Teresa Johnson via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
> > So I'd first like to understand whether we still want to keep gcc 4.7 as a
> > supported version, or move to 4.8 as was suggested. What is the process for
> > making that change?
> >
>
2016 Oct 17
3
unable to compile llvm with gcc 4.7.4
On Mon, Oct 17, 2016 at 11:28 AM, Renato Golin via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On 17 October 2016 at 19:09, Flamedoge via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
> > Just for the interest of discussion, I find it completely weird and
> > interesting that GCC needs to build itself 3 times to fully bootstrap.
> Has
> > there been any