Blog Archives

Flexmix taks long time…

July 19, 2010
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Flexmix taks long time…

I am running a mixture logit model on a sample of 10,000 cases. The model takes a long time (3-4 hours) to run, which makes it nearly impossible to try different specifications and such. It probably makes sense to use a subsample for exploratory analys...

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Npmlreg and Flexmix

July 18, 2010
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Npmlreg and Flexmix

In my attempt to estimate a mixture regression model for the long-term impact of prenatal famine exposure, I compared results obtained from NPMLREG and Flexmix using the "rainfall" data set came with the package "forward" and was able to achieve identi...

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Latent variable analysis package for R

July 17, 2010
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Latent variable analysis package for R

This is another R package for latent variable analysis. I hope it can soon include multilevel and mixture modeling capacity. Another promising package is OpenMx, which is also under active development and very promising. At this moment, OpenMx seems to...

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Convergence diagnostics with MCMCglmm

July 5, 2010
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Convergence diagnostics with MCMCglmm

MCMCglmm does not produce more than one chain. So the way to check convergence is to run the model twice, each with different starting values, then conduct the diagnostic with:gelman.diag(m1$Sol, m2$Sol)

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A quetion

June 21, 2010
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A quetion

I posted a question to the R-Mixed-Model mailing list but have not had any responses yet:--------------------------------------------------------------------------------------- Dear All,I wonder if anybody has tried to make glmmBUGS work with JAGS. Mya...

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R-INLA package

June 19, 2010
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R-INLA package

Another R package for mixed effect modeling. Looks promising.

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Sweave with Emacs and ESS, problem solved!

May 9, 2010
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Sweave with Emacs and ESS, problem solved!

With help from Seb, the nagging problem I had when trying to sweaving with Emacs and ESS (http://old.nabble.com/ESS-and-Sweave-td28339734.html) has been solved.First of all, apply the patch for ess-swv.el, provided by Seb. Second, set the default ...

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Sweave vs. pgfSweave

April 28, 2010
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Sweave vs. pgfSweave

I think pgfSweave should replace the default of Sweave system because it brings significant improvements over the original Sweave. I certain have made it my default Sweave tool on my system.------------------------------- EDITED ON MAY 1, 2010 --------...

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Trouble with ESS and Sweave

April 23, 2010
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Trouble with ESS and Sweave

Last time I tried to sweave a document from with Emacs+ESS, I was using an earlier version of ESS (the current version is 5.8), and things seemed to be fine. Today when I tried to sweave a simple document and produced PDF output, I got error message of...

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GLMM using DPpackage

April 9, 2010
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GLMM using DPpackage

I was able to fit a semi-parametric Bayesian GLMM model using DPpackage. It took me many hours to sample from the posterior distribution (DPM prior):MCMC scan 1000 of 5000 (CPU time: 18950.080 s)MCMC scan 2000 of 5000 (CPU time: 22510.100 s)M...

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