Displaying 20 results from an estimated 400 matches similar to: "FIML in R"
2011 Dec 01
3
FIML with missing data in sem package
Is there a way to use full information maximum likelihood (FIML) to
estimate missing data in the sem package? For example, suppose I have a
dataset with complete information on X1-X3, but missing data (MAR) on X4.
Is there a way to use FIML in this case? I know lavaan and openmx allow you
to do it, but I couldn't find anything in the documentation for the sem
package. Thanks!
--
Dustin Fife
2012 Jul 12
1
easy way to fit saturated model in sem package?
Hi,
I am wondering if anyone knows of an easy way to fit a saturated model
using the sem package on raw data? Say the data were:
mtcars[, c("mpg", "hp", "wt")]
The model would estimate the three means (intercepts) of c("mpg",
"hp", "wt"). The variances of c("mpg", "hp", "wt"). The covariance
of mpg with
2012 Jul 20
1
FIML using lavaan returns zeroes for coefficients
Hello!
I am trying to reproduce (for a publication) analyses that I ran several months ago using lavaan, I'm not sure which version, probably 0.4-12. A sample model is given below:
pathmod='mh30days.log.w2 ~ mh30days.log + joingroup + leavegroup + alwaysgroup + grp.partic.w2 + black + age + bivoc + moved.conf + local.noretired + retired + ds + ministrytime + hrswork + nomoralescore.c +
2008 Dec 11
0
Equivalent to Full Information Maximum Likelihood (FIML) in R?
Is there an equivalent to MPlus's Full Information Maximum Likelihood (FIML)
missing data estimator for R? If so, is there a way to take covariance
structures produced by such a package and perform multiple regression with
these?
If you are unfamiliar with Mplus' FIML below is a link to their manual.
Their estimation technology is discussed on page 25. I have asked the
developer of the
2004 Aug 27
4
FIML in lme
Hi
I was asked if lme can use FIML (Full Information Maximum Likelihood)
instead of REML or ML but I don't know the answer. Does anybody know if
this is implemented in R?
Thanks
Francisco
2009 Nov 04
2
error in install.packages() (PR#14042)
Full_Name: Michael Spiegel
Version: 2.10
OS: Windows Vista
Submission from: (NULL) (76.104.24.156)
The following error is produced when attempting to call install.packages. Here
is the results of the traceback:
> source('http://openmx.psyc.virginia.edu/getOpenMx.R')
Error in f(res) : invalid subscript type 'list'
> traceback()
7: f(res)
6: available.packages(contriburl =
2012 Aug 10
1
Lavaan: Immediate non-positive definite matrix
Hi,
I recently tried to estimate a linear unconditional latent growth curve on
7 repeated measures using lavaan (most recent version):
modspec='
alpha =~ 1*read_g0 + 1*read_g1 + 1*read_g2 + 1*read_g3 + 1*read_g4 +
1*read_g5 + 1*read_g6
beta =~ 0*read_g0 + 1*read_g1 + 2*read_g2 + 3*read_g3 + 4*read_g4 +
5*read_g5 + 6*read_g6
'
gmod=lavaan(modspec, data=math, meanstructure=T,
2010 Mar 22
2
SEM PACKAGE
Dear all,
I would like to know if it is possible to estimate multi-group SEM by using R...
Thank you
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2010 Mar 03
1
(PR#14226) -- Re: libgfortran misplaced in Mac OS X R install (PR#14226)
I am the guy who compiles the OpenMx binaries. We would be delighted
to place our package on CRAN, once the project is stable enough so
that we are comfortable releasing it to the larger public. Let's try
to track down where I made a mistake. Our Makevars.in file contains
the line:
PKG_LIBS=$(FLIBS) $(BLAS_LIBS) $(LAPACK_LIBS)
In addition, on the build machine I noticed that a copy of
2010 Mar 02
1
libgfortran misplaced in Mac OS X R install (PR#14226)
Full_Name: Timothy Brick
Version: 2.10
OS: Mac OS X (seen on both 10.6 and 10.5)
Submission from: (NULL) (63.255.24.5)
When using install.packages in R on Mac OS X, packages that require gfortran
throws an error (Example below from installation of OpenMx package):
Loading required package: OpenMx
Error in dyn.load(file, DLLpath = DLLpath, ...) :
unable to load shared library
2013 Apr 23
2
Frustration to get help R users group
Dear R users/developers
I requested help to solve the problem of formulating Multivariate Sample
selection model by using Full Information Maximum Likelihood
(FIML)estimation method. I could not get any response. I formulated the
following code of FIML to analyse univariate sample selection problem.
Would you please advise me where is my problem
library (sem)
library(nrmlepln)
Selection
2006 Jul 13
1
sem question
Dear all,
I am trying to estimate simultaneous equation model concerning growth in russian regions.
I run the analysis by means of FIML in R sem package.
I am not familiar with SEM yet, but I've just got several suitable estimated specifications.
Nevertheless, sometimes R gives the following warning message:
Warning message:
Negative parameter variances.
Model is probably underidentified.
2009 Oct 28
3
structural equation modeling
Dear R-help,
I am interested in using structural equation modeling.
Just getting started with it, but I'm looking for suggestions for packages.
As an aside, what's the best way for looking for packages at CRAN?
--
Robert Terwilliger
Biomedical Physicist
Laboratory of Neurocognitive Development
Western Psychiatric Institute and Clinic
University of Pittsburgh Medical Center
Loeffler
2011 Nov 11
3
multivariate modeling codes
HI,
I am relatively new to R and would appreciate some help or directions for
this.
I am trying to model 3 longitudinal outcomes jointly and to identify some
predictors for these 3 joint outcomes (all continuous). I am trying to find
some codes that I may modify to do this but cannot seem to find anything.
--
View this message in context:
2007 Jul 05
1
(Statistics question) - Nonlinear regression and simultaneous equation
Hi,I have a fundamental questions that I'm a bit confused. If any guru from this circle could help me out, I would really appreciate.I have a system of equations in which some of the endogs appear on right hand sides of some equations. To solve this, one needs a technique like 2SLS or FIML to circumvent inconsistency of the estimated coefficients. My question is that if I apply the nonlinear
2012 Oct 01
2
mlogit and model-based recursive partitioning
Hello:
Has anyone tried to model-based recursive partition (using mob from package
party; thanks Achim and colleagues) a data set based on a multinomial logit
model (using mlogit from package mlogit; thanks Yves)?
I attempted to do so, but there are at least two reasons why I could not.
First, in mob I am not quite sure that a model of class StatModel exists for
mlogit models. Second, as
2013 Oct 15
4
Two R editiosn in Unix cluster systems
Dear R Devel
Some of our R users are still insisting we run R-2.15.3 because of
difficulties with a package called OpenMX. It can't cooperate with new R,
oh well.
Other users need to run R-3.0.1. I'm looking for the most direct route to
install both, and allow users to choose at runtime.
In the cluster, things run faster if I install RPMs to each node, rather
than putting R itself on
2012 Nov 01
2
SEM validation: Cross-Validation vs. Bootstrapping
Hello All,
Recently, I was asked to help out with an SEM cross-validation analysis. Initially, the project was based on "sample-splitting" where half of cases were randomly assigned to a training sample and half to a testing sample. Attempts to replicate a model developed in the training sample using the testing sample were not entirely successful. A number of parameter estimates were
2002 May 30
2
Systems of equations in glm?
I have a student that I'm encouraging to use R rather than SAS or Stata
and within just 2 weeks he has come up with a question that stumps me.
What does a person do about endogeneity in generalized linear models?
Suppose Y1 and Y2 are 5 category ordinal dependent variables. I see
that MASS has polr for estimation of models like that, as long as they
are independent. But what if the
2010 Oct 31
3
BLAS benchmarks on R 2.12.0
Hi,
I saw on the mailing list and in the NEWS file that some unsafe math
transformations were disabled for the reference BLAS implementation
that is used in R. We have a set of performance tests for the OpenMx
library, and some of the tests have a x3-10 slowdown in R 2.12.0
versus 2.11.1. When I copy the shared library libRblas.0.dylib from
the 2.11.1 installation into the 2.12.0 installation,