Displaying 20 results from an estimated 800 matches similar to: "laplace transform"
2005 Apr 14
6
Inverse of the Laplace Transform/Gaver Stehfest algorithm
Hi there,
Is there an implementation of the Gaveh Stehfest algorithm in R
somewhere ? Or some other inversion ?
Thanks,
Tolga
2005 Jun 16
1
identical results with PQL and Laplace options in lmer function (package lme4)
Dear R users
I encounter a problem when i perform a generalized linear mixed model (binary data) with the lmer function (package lme4)
with R 2.1.0 on windows XP and the latest version of package "lme4" (0.96-1) and "matrix" (0.96-2)
both options "PQL" and "Laplace" for the method argument in lmer function gave me the same results (random and fixed effects
2008 Nov 01
2
sampling from Laplace-Normal
Hi,
I have to draw samples from an asymmetric-Laplace-Normal distribution:
f(u|y, x, beta, phi, sigma, tau) \propto exp( - sum( ( abs(lo) +
(2*tau-1)*lo )/(2*sigma) ) - 0.5/phi*u^2), where lo = (y - x*beta) and
y=(y_1, ..., y_n), x=(x_1, ..., x_n)
-- sorry for this huge formula --
A WinBUGS Gibbs sampler and the HI package arms sampler were used with the
same initial data for all parameters. I
2010 Mar 11
1
Dicrete Laplace distribution
Hello,
<http://tolstoy.newcastle.edu.au/R/help/04/07/0312.html#0313qlink1> Could
anybody tell me how to generate discrete Laplacian distribution?
I need to sample uma discretised Laplacian density like this:
J( g -> g´) ~ exp (-lambda | g´ - g |) g in {0,…, gmax}
Thanks,
Nicolette
[[alternative HTML version deleted]]
2010 Feb 12
1
R - Compiling and calling Fortran code that uses IMSL libraries - Help!
Good Afternoon R Help!
On of my users is seriously thinking about moving to R from Splus. In his
testing, he has already found some benefits to it. He has, however run
into one issue, calling his Fortran functions in R. Previously, in Splus,
he would do the following:
1. Compile via f90 the *.f program
2. link the object file to the Fortran IMSL libraries via the 'ld' command
3.
2007 Aug 03
2
change the names of all listed objects
Dear list members,
I have created seven objects, from a to g, so that ls() gives me
[1] "a" "b" "c" "d" "e" "f" "g"
how can I automatically change their names in
"a1" "b1" "c1" "d1" "e1" "f1" "g1"
It seems simple, ut it is driving me mad.
Thank you very
2006 Mar 21
1
Is it possible to model with Laplace's error distribution?
Hello!
My question is stated in the Subject: Is it possible to model with
Laplace's error distribution? For example, lmer() function have few
families of functions, like binomial etc., but not Laplace. Is there any
other package that would allow for Laplace? Or is there a way to give
"user-defined" family?
Sincerely,
P. Milin
2007 Aug 03
1
Re : change the names of all listed objects
Un texte encapsul? et encod? dans un jeu de caract?res inconnu a ?t? nettoy?...
Nom : non disponible
Url : https://stat.ethz.ch/pipermail/r-help/attachments/20070803/ae1807ba/attachment.pl
2007 Nov 26
1
CPCA?
It would be great to know if and where an R code for Common Principal Component Analysis is available.
Thanks,
Daniel
Daniel Berner
Redpath Museum & Dept. of Biology
McGill University
859 Sherbrooke St. W.
Montreal, QC, H3A 2K6
Canada
Phone: 514-398-4086 ext. 00908
Fax: 514-398-3185
Email: daniel.berner at mail.mcgill.ca
2010 Nov 24
0
Laplace Approximation
Does anyone have any R code that shows how to do a Laplace Approximation? I
know there are a variety of these numerical approximation algorithms and I'm
pretty open at this point, I'm just curious how it's approximated in R code.
I have seen some functions in packages, but I think they all call C code,
and am looking for an example in R only. Thanks.
--
View this message in
2011 Oct 02
0
Multivariate Laplace density
Can anyone show how to calculate a multivariate Laplace density? Thanks.
--
View this message in context: http://r.789695.n4.nabble.com/Multivariate-Laplace-density-tp3864072p3864072.html
Sent from the R help mailing list archive at Nabble.com.
2003 Jun 23
0
Reliability analysis and Laplace factor functions
Is there some package out there that implements functions
for reliability analysis, especially for software reliability?
In particular, I'm looking for:
* Laplace factor (Cox & Lewis 1978)
* Goel-Okumoto fitting
Thanks in advance,
-Ekr
--
[Eric Rescorla ekr at rtfm.com]
2005 Jul 16
2
topical guide to R packages
I would like to see R packages arranged by topic. CRAN
Task Views are at
http://lib.stat.cmu.edu/R/CRAN/src/contrib/Views/ ,
but I'd like something more detailed. For example, the
IMSL Fortran library, version 4 is easy to navigate
and has procedures arranged according to following
topics:
Basic Statistics
Regression
Correlation
Analysis of Variance
Categorical and Discrete
2011 Dec 08
0
SVM performance using laplace kernel is too slow
I've created an SVM in R using the kernlab package, however it's running incredibly slow (20,000 predictions takes ~45 seconds on win64 R distribution). CPU is running at 25% and RAM utilization is a mere 17% ... it's not a hardware bottleneck. Similar calculations using data mining algorithms in SQL Server analysis services run about 40x faster.
Through trial and error, we
2007 Jun 12
5
R Book Advice Needed
I am new to using R and would appreciate some advice on
which books to start with to get up to speed on using R.
My Background:
1-C# programmer.
2-Programmed directly using IMSL (Now Visual Numerics).
3- Used in past SPSS and Statistica.
I put together a list but would like to pick the "best of"
and avoid redundancy.
Any suggestions on these books would be helpful (i.e. too much
2001 May 09
7
R-Quant
Greetings,
Does anyone know if R-Quant, http://www.smartquant.com/ an outgrowth of
the statistical package "R"?
Bill Vedder
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
2015 Mar 24
2
[LLVMdev] RFC - Improvements to PGO profile support
> On Mar 24, 2015, at 12:08 PM, Xinliang David Li <davidxl at google.com> wrote:
>
> On Tue, Mar 24, 2015 at 10:54 AM, Bob Wilson <bob.wilson at apple.com> wrote:
>>
>>> On Mar 24, 2015, at 10:53 AM, Diego Novillo <dnovillo at google.com> wrote:
>>>
>>> On Tue, Mar 24, 2015 at 1:48 PM, Bob Wilson <bob.wilson at apple.com> wrote:
2011 Apr 25
1
R equivalent to (D)QDAWO in Fortran?
Hi useRs,
I have a set of fortran code that was passed down from previous students, and I am converting its algorithm into R codes.
I encounter this function in Fortran (D)QDAWO, which numerically integrates a function f with a user-specified cosine or sine weight. It is used because the original function that I want to integrate is f(x)*cos(x).
I tried in R to directly integrate by
2015 Mar 26
2
[LLVMdev] RFC - Improvements to PGO profile support
> On Mar 24, 2015, at 3:22 PM, Xinliang David Li <davidxl at google.com> wrote:
>
> On Tue, Mar 24, 2015 at 2:47 PM, Bob Wilson <bob.wilson at apple.com <mailto:bob.wilson at apple.com>> wrote:
>>
>>> On Mar 24, 2015, at 12:08 PM, Xinliang David Li <davidxl at google.com> wrote:
>>>
>>> On Tue, Mar 24, 2015 at 10:54 AM, Bob
2015 May 07
3
[LLVMdev] RFC - Improvements to PGO profile support
Can you tell us if you're continuing to use the same approach as
described in one of the LLVM meetings, i.e. instrument at the clang
AST level?
Also, do you generate GCOV files, some yaml, or is this a separate format?
And finally in the meeting you had given how you assign counters to
the blocks, an algorithm to minimize the number of insertions. Is that
algorithm a well-known one or a