Andrew gone NUTS!

November 23, 2011 | xi'an

Matthew Hoffman and Andrew Gelman have posted a paper on arXiv entitled “The No-U-Turn Sampler: Adaptively Setting Path Lengths in Hamiltonian Monte Carlo” and developing an improvement on the Hamiltonian Monte Carlo algorithm called NUTS (!). Here is the abstract: Hamiltonian Monte Carlo (HMC) is a Markov chain Monte Carlo (MCMC) ... [Read more...]

Bayesian Fall school in La Rochelle

June 26, 2011 | xi'an

The French agronomy research institute INRA is organising a Fall school in La Rochelle, Nov. 28 – Dec. 02, on Bayesian methods, oriented towards the applications in food sciences, environmental sciences, and biology. The provisional program (in French) is ■ Initiation aux outils informatiques R et WinBUGS (TP et réalisation de projets sur ... [Read more...]

Bugs [genuine]

July 21, 2010 | xi'an

Nothing related with programming, I am afraid! Just a few bugs visiting my passion vine… I find the green bugs quite interesting with their back “engravings”, even though they are most likely pests … Filed under: pictures, ...
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A quetion

June 21, 2010 | Shige

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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JAGS, rjags, and coda packages for Fedora

June 6, 2010 | Yu-Sung Su

Christopher has the RPMs (for Fedora users) for JAGS, coda, and rjags on his blog. The specific blog entry is here: http://cddesjardins.wordpress.com/2010/06/04/jags-package-for-fedora-13-64-bit/ If you have trouble installing JAGS or rjags in Fedora,... [Read more...]

Computational Statistics

May 9, 2010 | xi'an

Do not resort to Monte Carlo methods unnecessarily. When I received this 2009 Springer-Verlag book, Computational Statistics, by James Gentle a while ago, I briefly took a look at the table of contents and decided to have a better look later… Now that I have gone through the whole book, I ...
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Bayes vs. SAS

May 6, 2010 | xi'an

Glancing perchance at the back of my Amstat News, I was intrigued by the SAS advertisement Bayesian Methods Specify Bayesian analysis for ANOVA, logistic regression, Poisson regression, accelerated failure time models and Cox regression through the GENMOD, LIFEREG and PHREG procedures. Analyze a wider variety of models with the MCMC ...
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Our new R package: R2jags

February 8, 2009 | Yu-Sung Su

I have got emails occasionally from JAGS users, asking about our new R package: R2jags. Basically, R2jags runs JAGS via R and makes postanalysis easier to be done in R. Taking advantage of the functions provided by JAGS, rjags a... [Read more...]

Runing R in the Command Mode in the Window system

January 29, 2009 | Yu-Sung Su

Just when I am about to convert myself into a Linux user, I found this. Running R in the command mode in the Window system is much faster. Here is a simple test:in the Window interface:__ system.time(rnorm(1000000)%*%rnorm(1000000)) user system elapsed 1.06 0.05 1.14 in the command mode__ system.time(... [Read more...]

Install JAGS and rjags in Fedora

January 23, 2009 | Yu-Sung Su

JAGS was developed to help those non-Window users to be able to use BUGS. However, I found it is very hard to install JAGS and its R package-rjags. Here is my note on how to install JAGS and rjags in Fedora 10. The note here should work for all Linu... [Read more...]

R2jags: A Package for Running jags from R

May 21, 2008 | Yu-Sung Su

I have wrote about my experience with jags here. Martyn Plummer has updated jags recently and now jags can get as he claimed. Jags is fast and its source code is more manipulable (It's written in C++).I and Masanao wrote a package, R2jags, for runnin... [Read more...]

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