Writing a Metropolis-Hastings within Gibbs sampler in R for a 2PL IRT model (9 posts)

November 5, 2013
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(This article was first published on Nathan VanHoudnos » rstats, and kindly contributed to R-bloggers)

Last year, Brian Junker, Richard Patz, and I wrote an invited chapter for the (soon to be released) update of the classic text Handbook of Modern Item Response Theory (1996). The chapter is meant to be an update of the classic IRT in MCMC papers Patz & Junker (1999a, 1999b).

To support the chapter, I have put together an online supplement which gives a detailed walk-through of how to write a Metropolis-Hastings sampler for a simple psychometric model (in R, of course!). The table of contents is below:

I will continue to add to the online supplement over time. The next few posts will be:

  • Post 10: Over dispersion and multi-core parallelism
  • Post 11: Replacing R with C
  • Post 12: Adaptive tuning of the Metropolis-Hastings proposals

I would be grateful for any feedback. Feel free to either leave it here or at the online supplement itself.

To leave a comment for the author, please follow the link and comment on his blog: Nathan VanHoudnos » rstats.

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