Articles by gary

Rcpp is smoking fast for agent-based models in data frames

July 11, 2012 | gary

In a previous post, I discussed different approaches to speeding up some loops in data frames. In particular, R data frames provide a simple framework for representing large cohorts of agents in stochastic epidemiological models, such as those representing disease … Continue reading → [Read more...]

R can write R code, too

April 14, 2012 | gary

In a recent blog post by CMastication, a little meme puzzle is presented with the introduction that a preschooler could solve it in 5-10 minutes, a programmer in an hour. I took the bait. The original problem goes like this: … Continue reading → [Read more...]

Speeding up agent-based simulations with data frames in R

April 16, 2011 | gary

In health economics it is common to use agent-based simulations for exploring epidemiological models, prevention policies, and clinical interventions, among other things. In C++ I enjoy using object-oriented design to build these agent-based models. It feels so natural. In R, … Continue reading → [Read more...]

Grey’s Anatomy Network of Sexual Relations

March 25, 2011 | gary

This all began with an introductory presentation about social network analysis to a group of medical students.  What better way to grab their attention than with attractive, fake doctors having sex on television?  Naturally this led to the dense network … Continue reading → [Read more...]

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