Displaying 20 results from an estimated 6000 matches similar to: "[R-pkgs] New versions of Matrix and lme4 packages for R-2.4.0"
2006 Oct 03
1
New versions of Matrix and lme4 packages for R-2.4.0
Versions 0.9975-1 of the Matrix and lme4 packages will soon be available on
CRAN for use with R version 2.4.0 or later.
Purpose of the packages:
The Matrix package provides S4 classes and methods for sparse
and dense matrices. The lme4 package provides functions for fitting
and assessing linear or generalized linear mixed effects models (also
called multilevel models). Like the Matrix package,
2006 Oct 03
1
New versions of Matrix and lme4 packages for R-2.4.0
Versions 0.9975-1 of the Matrix and lme4 packages will soon be available on
CRAN for use with R version 2.4.0 or later.
Purpose of the packages:
The Matrix package provides S4 classes and methods for sparse
and dense matrices. The lme4 package provides functions for fitting
and assessing linear or generalized linear mixed effects models (also
called multilevel models). Like the Matrix package,
2006 Nov 21
1
lme4 model with no fixed effects?
Crossed random effects:
> lmer( y ~ (1 | i1) + (1|i2) ,data=dta)
Linear mixed-effects model fit by REML
Formula: y ~ (1 | i1) + (1 | i2)
Data: dta
AIC BIC logLik MLdeviance REMLdeviance
91.18 94.84 -42.59 85.2 85.18
Random effects:
Groups Name Variance Std.Dev.
i1 (Intercept) 0.068224 0.26120
i2 (Intercept) 0.463112
2008 Dec 20
2
Problems installing lme4 on Ubuntu
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While I'm not an R expert, I have used R on Windows XP. Now I've moved
to Ubuntu (Intrepid), and I'm trying to configure R to work with the
Gelman and Hill _Data Analysis Using Regression and
Multilevel/Hierarchical Models_. So far, it's not working.
I start by following the instructions for installing arm and BRugs at
2006 Jun 28
1
lme4 - higher level
Hello all,
I just started working with the lme4 package to estimate a multilevel
logistic regression and am planning to use this package for a
cross-classification / multiple-membership model. I haven't found many
worked examples and am trying to figure out how to add variables to the
higher-level part of the model. Consider the following example:
test.1 <- lmer(y ~ b1 + b2 + b3 +
2005 Aug 18
0
[SPAM] - Re: How to assess significance of random effect in lme4 - Bayesian Filter detected spam
Actually, I re-read the post and think it needs clarification. We may
both be right. If the question is "I am building a model and want to
know if I should retain this random effect?" (or something like that)
then the LRT should be used to compare the fitted model against another
model. This would be accomplished via anova().
In other multilevel programs, the variance components are
2009 Feb 28
1
lme4 and Variable level detection
I am making a little GUI for lme4, and I was wondering if there is a function
that automatically detects on which level every variable exists.
Furtheremore I got kind of confused about what a random effects model
actually calculates.
I have some experience with commercial software packages for multilevel
analysis, like HLM6, and I was surprised that lme4 does not require the user
to specify the
2012 Jun 06
3
Sobel's test for mediation and lme4/nlme
Hello,
Any advice or pointers for implementing Sobel's test for mediation in
2-level model setting? For fitting the hierarchical models, I am using
"lme4" but could also revert to "nlme" since it is a relatively simple
varying intercept model and they yield identical estimates. I apologize for
this is an R question with an embedded statistical question.
I noticed that a
2010 Sep 22
0
reliability of the level-1 random coefficients (lme4)
Hello everyone,
I want to estimate the reliability *of the level*-*1 random coefficients
(the one *reported in the HLM output) using the software R. Does anyone know
how to get this statistic from R?
I'm using the function "lmer" of the package "lme4" to estimate multilevel
models.
I tried to use the formula but I can't find specific information such as the
sigma
2006 Oct 09
2
Incompatability of lme4 and Matrix packages
I just installed R 2.4 on a windows machine and installed the lme4 package
version 0.9975-1. Unfortunately this version requires the 0.9975-2 version of
the Matrix package which I cannot seem to find. It seems the newest version I
can find is 0.9975-1. Is there somewhere I could find this newer version.
Mark Lyman
2011 Sep 12
1
Multilevel model in lme4 and nlme
Dear list,
I am trying to fit some mixed models using packages lme4 and nlme.
I did the model selection using lmer but I suspect that I may have some
autocorrelation going on in my data so I would like to have a look using the
handy correlation structures available in nlme.
The problem is that I cannot translate my lmer model to lme:
mod1<- lmer(y~x + (1|a:b) + (1|b:c), data=mydata)
2016 Apr 27
0
New package: bridgedist (v 0.1.0)
R Users,
The d/p/q/r functions for the bridge distribution are now available in
bridgedist.
When a random intercept follows the bridge distribution, as detailed in
Wang and Louis (2003) <doi:10.1093/biomet/90.4.765
<http://dx.doi.org/10.1093/biomet/90.4.765>>, a marginalized
random-intercept logistic regression will still be a logistic regression
with marginal coefficients that are
2012 Jan 24
2
sampling weights in package lme4
Dear All
I am trying to include sampling weights in multilavel regression analysis using packege lme4 using following codes
print(fm1 <- lmer(DC~sex+age+smoker+alcohol+fruits(1|setting), dataset,REML = FALSE), corr = FALSE)
print(fm2 <- lmer(DC~sex+age+smoker+alcohol+fruits(1|setting), dataset,REML = FALSE), corr = FALSE,weights=sweight)
The problem is both the
2007 Apr 16
1
Modelling Heteroscedastic Multilevel Models
Dear ListeRs,
I am trying to fit a heteroscedastic multilevel model using lmer{lme4-
package). Take, for instance, the (fictive) model below.
lmer(test.result ~ homework + Sex -1 + (1 | School))
Suppose that I suspect the error terms in the predicted values to
differ between men and women (so, on the first level). In order to
model this, I want the 'Sex'-variable to be random on
2006 Oct 18
2
Redhat compilers and lme4 with R-2.4.0
I've tried unsuccessfully to install lme4 on two different Redhat
systems but I've not noticed anything on this list to indicate anyone
else has had similar problems.
* Installing *source* package 'lme4' ...
** libs
gcc -I/usr/local/R-2.4.0/include -I/usr/local/R-2.4.0/include -I/usr/local/include -fpic -g -O2 -std=gnu99 -c init.c -o init.o
In file included from init.c:1:
2005 Jun 10
0
New versions of Matrix and lme4 packages
I have uploaded version 0.96-1 of both Matrix and lme4 to CRAN. The
source package should migrate to CRAN over the weekend and binary
packages should be available some time next week.
As for previous releases, the versions of these two packages are
interdependent. The lme4 package requires Matrix_0.96-1 or later but
we cannot enforce the other dependency. Please remember that if you
upgrade
2005 Jun 10
0
New versions of Matrix and lme4 packages
I have uploaded version 0.96-1 of both Matrix and lme4 to CRAN. The
source package should migrate to CRAN over the weekend and binary
packages should be available some time next week.
As for previous releases, the versions of these two packages are
interdependent. The lme4 package requires Matrix_0.96-1 or later but
we cannot enforce the other dependency. Please remember that if you
upgrade
2007 Jan 25
1
New version of lme4 and new mailing list R-SIG-mixed-models
Version 0.9975-11 of the lme4 package has been uploaded to CRAN. The
source package should be available on the mirrors in a day or two and
binary packages should follow soon after.
There are several changes in this release of the package. The most
important is the availability of a development version of lmer called,
for the time being, lmer2. At present lmer2 only fits linear mixed
models.
2007 Jan 25
1
New version of lme4 and new mailing list R-SIG-mixed-models
Version 0.9975-11 of the lme4 package has been uploaded to CRAN. The
source package should be available on the mirrors in a day or two and
binary packages should follow soon after.
There are several changes in this release of the package. The most
important is the availability of a development version of lmer called,
for the time being, lmer2. At present lmer2 only fits linear mixed
models.
2006 Mar 01
1
Book: Multilevel Modeling in R ETA?
Hi R folks (Dr. Bates in particular),
In August 2005, Dr. Bates mentioned that the documentation for lme4
"will be in the form of a book with the working title 'Multilevel
Modeling in R'" and I'm just wondering if there is an estimated date of
publication or if it's still a long way off. The Rnews article does a
great job of introducing the package, but I'm