Displaying 20 results from an estimated 4000 matches similar to: "Converting S-Plus Libraries to R"
2003 Apr 01
1
Shafer's MI software for S-plus
Greetings folks,
Shafer's S-plus package "norm" for multiple imputation of
missing values in multivariate normal data has been most
kindly and usefully ported to R by Alvaro A. Novo.
Shafer's website
http://www.stat.psu.edu/~jls/
lists four S-plus packages in all:
NORM - multiple imputation of multivariate continuous data
CAT - multiple imputation of multivariate
2009 Jun 05
1
EM Algorithm
Dear R
expert
I am a
student and I am currently conducting a research project on the Modeling Loss
Index Triggers to price Cat Bonds: Application of the risk of hurricanes in
USA.
I need to
solve with R (especially with EM algorithm) this specific problem below. CRAN
Package archive doesn't seem to have it also the statistical modeling journal
didn't contain a paper that implements this:
2001 May 08
3
Replacing missing values
I'm discovering R (very impressive), and didn't find in the docs a simple
method for replacing, in a data frame, missing values (NA) with the
column's mean (or any other method for reconstructing missing values when
needed).
Thanks in advance for your help.
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read
2004 Feb 09
1
Can S-Plus packages be used in R without modification?
Hi,
I have had a quick search to see whether this question has been
asked/answered before but haven't found anything directly related to it.
Basically, I am wondering if I can run the packages, developed by Shafer
for S-Plus, that allow multiple imputation of missing data - NORM, CAT,
MIX, and PAN.
If not, does anyone know if someone has done the modification that would
make these packages
2005 Jun 28
1
sample R code for multiple imputation
Hi,
I have a big dataset which has many missing values and want to implement
Multiple imputation via Monte carlo markov chain by following J Schafer's
"Analysis of incomplete multivariate data". I don't know where to begin
and is looking for a sample R code that implements multiple imputation
with EM, MCMC, etc....
Any help / suggestion will be greatly appreciated.
David
2004 May 12
4
missing values imputation
What R functionnalities are there to do missing values imputation (substantial proportion of missing data)?
I would prefer to use maximum likelihood methods ; is the EM algorithm implemented? in which package?
Thanks
Anne
----------------------------------------------------
Anne Piotet
Tel: +41 79 359 83 32 (mobile)
Email: anne.piotet@m-td.com
2006 Oct 31
3
Missing data analysis in R
I am looking for a book that discusses the theory of multiple imputation
(and other methods of dealing with missing data) and, just as
importantly, how to implement these methods in R or S-Plus. Ideally,
the book would have a structure similar to Faraway (Regression),
Pinheiro&Bates (Mixed Effects) and Wood (GAMs) and would be very modern
(i.e. published within the last couple of years).
2005 Jul 08
2
missing data imputation
Dear R-help,
I am trying to impute missing data for the first time using R. The norm
package seems to work for me, but the missing values that it returns seem
odd at times -- for example it returns negative values for a variable that
should only be positive. Does this matter in data analysis, and/or is
there a way to limit the imputed values to be within the minimum and
maximum of the actual
2003 Feb 07
1
a question regarding s-plus libraries and R
Hi!
I am a relatively new user of R and I use it to prepare my dissertation. I
have come to some very usefull and specific libraries written for S-PLUS 4
and would like to use them in R. Is that possible? I just found out that one
of these libraries has already been transfered to R, while 3 others have
not. For the matter of beeing more exact I''m interested in the dealing with
missing
2003 May 04
1
port of Pan to R
I'm looking for a port of Schafer's PAN module for multiple imputation of
nested data.
It is written in S-Plus, and I would like to use it in R.
Any pointers most appreciated.
Best wishes,
Paul von Hippel
2003 Jul 25
1
Difficulty replacing NAs using Hmisc aregImpute and Impute
Hello R experts
I am using Hmisc aregImpute and Impute (following example on page 105 of The
Hmisc and Design Libraries).
*My end goal is to have NAs physically replaced in my dataframe. I have
read the help pages and example in above sited pdf file, but to no avail.
Here is example of what I did.
Ph, my data frame, is attached.
> xt <- aregImpute (~ q5 + q22rev02 + q28a, n.impute=10,
2002 Apr 08
4
Missing data and Imputation
Hi Folks,
I'm currently looking at missing data/imputation
methods (including multiple imputation).
S-Plus has a "missing data library".
What similar resources are available within R?
Or does one roll one's own?
Best wishes to all,
Ted.
--------------------------------------------------------------------
E-Mail: (Ted Harding) <Ted.Harding at nessie.mcc.ac.uk>
2015 Jul 16
10
[LLVMdev] [RFC] Defining Infinite Loops
Hello everyone,
The topic of whether or not LLVM allows for infinite loops has come up a lot recently (several times this week already). Regarding motivation, there are two important facts:
1. Some languages, such as Java, have well-defined infinite loops. See:
http://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html#jls-17.4.9
and:
2007 Nov 19
2
Search for a usable pan manual
Hello,
I'm looking for a more descriptive manual/tutorial/paper for the pan package.
The provided manual and example do not contain any useful hints how to
specify a model with more than one variable and leaves several questions
unanswered. This also applies to the referred paper "Schafer: Imputation of
missing covariates under a multivariate linear mixed model."
Can anyone
2005 Nov 09
2
error in NORM lib
Dear alltogether,
I experience very strange behavior of imputation of NA's with the NORM
library. I use R 2.2.0, win32.
The code is below and the same dataset was also tried with MICE and
aregImpute() from HMISC _without_ any problem.
The problem is as follows:
(1) using the whole dataset results in very strange imputations - values
far beyond the maximum of the respective column, >
1999 Aug 24
1
package mlbench updated
Hi,
Evgenia and I have copied an updated version of the mlbench package to
CRAN which contains several new data sets. We have also changed some
of the variable names to avoid name conflicts.
Best,
--
-------------------------------------------------------------------
Friedrich Leisch
Institut f?r Statistik Tel: (+43 1) 58801 10715
Technische
1999 Aug 24
1
package mlbench updated
Hi,
Evgenia and I have copied an updated version of the mlbench package to
CRAN which contains several new data sets. We have also changed some
of the variable names to avoid name conflicts.
Best,
--
-------------------------------------------------------------------
Friedrich Leisch
Institut f?r Statistik Tel: (+43 1) 58801 10715
Technische
2015 Jul 16
2
[LLVMdev] [RFC] Defining Infinite Loops
----- Original Message -----
> From: "Chandler Carruth" <chandlerc at google.com>
> To: "Hal Finkel" <hfinkel at anl.gov>, "LLVM Dev" <llvmdev at cs.uiuc.edu>
> Sent: Thursday, July 16, 2015 1:00:05 AM
> Subject: Re: [LLVMdev] [RFC] Defining Infinite Loops
>
>
> FWIW, I'm very much in favor of having a firm and clear answer
2015 Jun 28
5
[LLVMdev] readonly and infinite loops
> You dropped some context...
> A daemon program wouldn't be readonly. An infinite loop can be.
Right.
To prevent miscommunication, here is a quick analysis of a problematic
(IMO) example:
We start with
```
define void @infloop(i1 %c) {
entry:
br i1 %c, label %l, label %e
l:
br label %l
e:
ret void
}
define void @main_func() {
entry:
call void @infloop(i1 1)
ret
2011 Jan 31
2
Rubin's rules of multiple imputation
Hello all, if I have multiple imputed data sets, is there a command or
function in R in any package you know of to combine those, I know one common
MI approach is rubins rules, is there a way to do this using his rules or
others? I know theres ways, like using Amelia from Gary King's website to
create the imputed data sets, but how to make them into one or combine them
for analysis.