Archive for September, 2011

Interactive MCMC visualizations project

Thursday, September 29th, 2011

Recently I have started being actively involved in a Markov Chain Monte Carlo visualization project with Marc Lipsitch and Miguel HernĂ¡n from the Department of Epidemiology in the Harvard School of Public Health. Work is done jointly with Sarah Cobey. The idea is to create a set of interactive visualizations to comprehensively describe and explain the concepts of how MCMC and its variants operate. Figure 1 shows a screenshot of the first sketch of an interactive visualization of a trace plot.

a screenshot

Figure 1: a screenshot of the first version of an interactive trace plot of an MCMC chain.

I am very excited about the project, both from the technical perspective of making interactive visualizations work with minimum amount of code, but also because I think that the idea of conceptualizing MCMC via the use of visualization is innovative and will be very useful for those trying to understand the process better.

The tools we are using in development are HTML, CSS, Javascript and d3.js.