I am a co-author of RItools, a R package for randomization inference. The primary authors of RItools are Drs. Ben Hansen and Jake Bowers. RItools currently provides tools for checking balance on control-treatment matchings, but will continue to grow with other tools based on the work of Fisher, Rosenbaum, and many others.
We have also developed an Stata version of RItools (though it does require R). More information on the Stata version can be found at Jake Bowers’ page.
I am also a co-author of Optmatch, a R package for optimal matching of observational studies based on a variety of criteria. Matching is a useful technique to make observational studies exhibit a key component of a randomized control trial: balance of covariates. Optmatch helps users created balanced subsets of control and treatment units so that on observed covariates, control and treatment groups appear similar. If unobserved variables correlate with observed covariates, they are also balanced under the match.
While optmatch is a separate project, users can benefit from the balance checking routines in RItools to evaluate the quality of proposed matchings.
I am a contributor to the Incanter statistical package. To date, my contributions are have been concentrated on distribution functions and random number generation. You can see what I am working on in my Incanter github fork.
Changeling is a Clojure preprocessor. It seeks out <clj> … </clj> blocks and evaluates the code within. Output is inserted into the document. Includes several macros for easy creation of interactive sessions and images depending output format. More details available at Changling github page.
Postdoc is a supplemental documentation system for Clojure projects. Postdoc replaces the traditional docstring with a richer, more complete menu of information, including examples, related functions, and links to online references. Documentation is structured for other tools to easily parse. More details available at postdoc github page.
For my fellow UIUC students I offer some help. Do you find yourself surfing the web and coming across some material that you need to access through the library’s proxy service? Drag Proxify! to your browser’s tool bar. When you find yourself on a page you need to acccess (e.g. Jstor, ACM Portal, Cambridge Journals), simply click the link and you’ll be sent through the proxy service.
With an ever dwindling battery on my Macbook, I like to be able to save power when I’m not using my laptop. The default sleep mode is good at keeping my battery alive, but for longer term downtime I need something better. Apple provides a power management setting for putting the computer into “hibernate” mode, but there is no easy user interface. slumber and snooze are two simple commandline utilities for putting your computer into a light sleep (snooze) or hibernation (slumber). Unpack the .tar.gz file, type sudo make install, and then slumber to get the most out of your battery.