Displaying 20 results from an estimated 200 matches similar to: "New Package: multinomRob"
2004 Oct 22
0
New Package for Multivariate and Propensity Score Matching
"Matching" version 0.48 is now available on CRAN.
Matching provides functions for estimating causal effects by
multivariate and propensity score matching. The package includes a
variety of univariate and multivariate tests to determine if balance
has been obtained by the matching procedure. These tests can also be
used to determine if an experiment or quasi-experiment is balanced on
2004 Oct 22
0
New Package for Multivariate and Propensity Score Matching
"Matching" version 0.48 is now available on CRAN.
Matching provides functions for estimating causal effects by
multivariate and propensity score matching. The package includes a
variety of univariate and multivariate tests to determine if balance
has been obtained by the matching procedure. These tests can also be
used to determine if an experiment or quasi-experiment is balanced on
2007 Feb 02
1
multinomial logistic regression with equality constraints?
I'm interested in doing multinomial logistic regression with equality
constraints on some of the parameter values. For example, with
categorical outcomes Y_1 (baseline), Y_2, and Y_3, and covariates X_1
and X_2, I might want to impose the equality constraint that
\beta_{2,1} = \beta_{3,2}
that is, that the effect of X_1 on the logit of Y_2 is the same as the
effect of X_2 on the
2011 Aug 17
1
multinomRob - error message
Hi,
I would like to use the multinomRob function to test election results.
However, depending on which independent variables I include and how
many categories I have in the dependent variable, the model cannot be
estimated.
My data look like this (there are 68 observations):
> head(database)
RESTE09 GAUCHE09 PDC09 PLR09 UDC09 MCG09 RESTE05 GAUCHE05 PDC05
D1 1455
2011 Feb 03
1
rgenoud for multiple chips: does a more recent special version of "snow" exist?
Dear everyone,
I am trying to run rgenoud on several chips simultaneusly. I used the
instructions provided on Jasjeet Sekhon's Homepage
(http://sekhon.berkeley.edu/rgenoud/multiple_cpus.html).
However, I have the newer version of R (R 2.12) installed - for a
64-bit machine. So, when I tried to install the special version of
"snow" from a zip file provided by Jasjeet on his page, R
2008 Aug 01
0
multinomRob: Error in eigen [..] infinite or missing values in 'x'
I'm interested in analysing some of my data using multinomial regression.
I have been using nnet's multinom so far.
However, I found that some of the data shows overdispersion and hence want to
change to robust multinomial regression, package: multinomRob
I have succesfully implemented Agresti's (2002) alligator example (chapter 7, p 268) using
the option MLEonly=TRUE as there are too
2005 Mar 02
1
Rounding parameter values in genoud(), Rgenoud package
I would like to limit the significant figures of the calibrated
parameters determined by genoud() in the Rgenoud package. Below is some
example output, where column 1 is model run number, columns 2-7 are the
parameter values, and columns 8-12 are model fit statistics. I would
like genoud to internally limit parameters to 4 decimal places as shown
in this output. It is clear that the function is
2003 Aug 26
4
R on Linux/Opteron?
Dear R-help:
Has anyone tried using R on the the AMD Opteron in either 64- or 32-bit
mode? If so, any good/bad experiences, comments, etc? We are considering
getting this hardware, and would like to know if R can run smoothly on such
a beast. Any comment much appreciated.
Best,
Andy
Andy Liaw, PhD
Biometrics Research PO Box 2000, RY33-300
Merck Research Labs Rahway, NJ
2004 Apr 24
2
R-devel from rsync 04/23
I see something new and unexpected here.
> update.packages()
trying URL `http://cran.r-project.org/src/contrib/PACKAGES'
Content type `text/plain; charset=iso-8859-1' length 163467 bytes
opened URL
.......... .......... .......... .......... ..........
.......... .......... .......... .......... ..........
.......... .......... .......... .......... ..........
.........
downloaded
2011 Nov 24
0
length of 'dimnames' [2] not equal to array extent
Hello all,
I'm trying to use the user-created multinomRob to make some models for my
data. While documentation for that function is fine and I think I'm using
it correctly, I'm getting the following error when I try to use my lists of
variables.
data <- read.csv("data.csv", header=FALSE)
subj1 <- data.frame(radius=data$V3[9:11], x1=data$V4[9:11],
x2=data$V5[9:11],
2006 Mar 13
1
Parallel computing with the snow package: external file I/O possible?
Hello,
I am trying to do model autocalibration using the snow and rgenoud
packages. The function I want to run in task-parallel fashion across
multiple machines is one that pre- and post-processes data and runs an
external model code. My problem is that external file I/O is happening
only in the master node and not in the slaves. I have followed Jasjeet
Sekhon's suggestion to test the
2007 Aug 16
0
Help with optimization using GENOUD
Dear Friends,
I have been trying to learn how to use the derivative free optimization algorithms implemented in the package RGENOUD by Mebane and Sekhon. However, it does not seem to work for reasons best described as my total ignorance. If anybody has experience using this package, it would be really helpful if you can point out where I'm making a mistake.
Thanks in advance
Anup
Sample
2012 Mar 16
1
Change in behavior of update.views()?
I haven't seen this cryptic warning before:
> update.views('Robust')
Warning message:
In update.views("Robust") :
The following packages are not available: covRobust, distr, FRB, MASS, mblm, multinomRob, mvoutlier, quantreg, RandVar, rgam, RobAStBase, robfilter, RobLox, RobRex, robust, RobustAFT, robustbase, ROptEst, ROptRegTS, rrcov, sandwich, wle
>
2007 May 09
3
Increasing precision of rgenoud solutions
Dear All
I am using rgenoud to solve the following maximization problem:
myfunc <- function(x) {
x1 <- x[1]
x2 <- x[2]
if (x1^2+x2^2 > 1)
return(-9999999)
else x1+x2
}
genoud(myfunc, nvars=2,
Domains=rbind(c(0,1),c(0,1)),max=TRUE,boundary.enforcement=2,solution.tolerance=0.000001)
How can one increase the precision of the solution
$par
[1] 0.7072442 0.7069694
?
I
2006 Apr 04
2
R performance: different CPUs
Hello!
I need to purchase a new box, which I would like to optimize for good R
performance.
For the record, I will run Fedora Core 5 as and OS, and I wanted to know
if anyone has experience with how the following affects R performance:
- Is there a big advantage to having a 64-bit CPU over having a 32-bit?
- Does an Opteron offer any advantages over an Athlon, and if yes, does
it justify an
2004 Oct 08
0
updated package boolean 1.5
I have just uploaded an updated version of my boolean package (v1.05),
which should be propagating through CRAN's mirrors soon. Boolean
permits estimation of Boolean logit and probit models (see Braumoeller
(2003), full reference in help file, for derivation). Boolean logit
and probit are a family of partial-observability n-variate models
designed to permit researchers to model causal
2004 Oct 08
0
updated package boolean 1.5
I have just uploaded an updated version of my boolean package (v1.05),
which should be propagating through CRAN's mirrors soon. Boolean
permits estimation of Boolean logit and probit models (see Braumoeller
(2003), full reference in help file, for derivation). Boolean logit
and probit are a family of partial-observability n-variate models
designed to permit researchers to model causal
1999 Jul 10
0
R,S,Octave,Matlab:SUMMARY
Dear R makers and users.
I summarize answers to my question. Thanks
for your help.
The conclusion seems to be
that, in terms of performance with large datasets,
Matlab=Octave > R > Splus5.1 > Splus5.0
but Matlab/Octave lack many of the stat
functions of R/S, and,
R does not have as many time-series functions
as S+ (but see last message to r-announce by adrian.trapletti at
2009 Feb 20
2
System of logistics Equations
Hi R-masters
I need yours help about a problema in one of may ongoing researchers.
In my research the subjects (20 in total) answer 60 questions (20 type
G, 20 type S and 20 type P).
Which questions is classified about 3 factor (2 level each) and the
subject score with 2 scale (not integer value is possible but rare): Val
range -7 to 7 and other Car range 1 to 7.
This a code to fake database
2007 May 10
2
PATCH Deliver forgets sendmail_path if DEBUG is set
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hello,
Dovecot v1.0.0 deliver erases the environment if DEBUG is set, hence, also
(probably) erases SENDMAIL_PATH if it has been read from configuration
file. This happens with: Debian Etch, libc-2.3.6.so, gcc (GCC) 4.1.2
20061115 (prerelease) (Debian 4.1.1-21).
Problem in log:
May 10 12:33:07 ux-2s11-9 deliver(dvtest): execv() failed: No such