Val Systems

Yesterday, as a pre-amble to an ordinary newsletter sent out via listserv to most PhD students at UPenn, we were offered this piece of advic...

So, I've been playing around with learning knitr , which is a Sweave-like R package for combining LaTeX and R code into one document. Th...

I've been doing more analysis of the Philadelphia Homicide data that the Philadelphia Inquirer has published, and presented some of it ...