RNetLogo

The RNetLogo package is a small piece of wonder. One can conduct agent-based simulation, try different model parameters, and then collect and conduct statistical analysis of the simulation results.

R and Hadoop

Some useful information here.

New Zealand abolished software patents

Here are some discussions.

Repast

A new version of the Repast agent-based simulation toolkit was just released!

Architect

Architect is another development environment for R.

Another faster BLAS post

Another post on using faster BLAS with R.

Wiki for R programming

Very useful wiki. I look forward to reading the final book as well.

gNewSense

Just saw a new beta of the "strictly libre" distro, gNewSense, but not before long I realized that many of the software bundled in this distro are several generations older than the most recent ones. For example, the newest gcc is 4.8.1, and gNewSense has 4.4.5, almost as old as the one that comes with OSX.

Faster Gibbs sampling MCMC from within R

I find this comparison of MCMC performance between different languages helpful.

After generating a .class file from the java source, I need to add the following two lines of code to make it work:

.jaddClassPath("/home/shige/mydata/test/Gibbs/out/production/Gibbs") 
.jaddClassPath("/home/shige/bin/java/parallelcolt-0.9.4.jar")