From the HRSA website: [The ARF 2009] is a database containing more than 6,000 variables for each of the nation’s counties. ARF contains information on health facilities, health professions, measures of resource scarcity, health status, economic activity, health training programs, and socioeconomic and environmental characteristics. The data file itself is formatted ... [Read more...]

   I’ve been playing with Twitter data over the last week, archiving Algerian, Egyptian, Iranian, and Chinese tweets.  I thought I’d bring the story a little closer to home this time by archiving tweets from Wisconsin Union protesters on the … Continue reading → [Read more...]

 I’ve posted three examples of Twitter hashtags datasets in the last week: one on China, one on Iran, and one on Algeria.  In order to build these datasets, I needed to obtain older tweets; this is slightly more difficult than … Continue reading → [Read more...]

  Earlier this week, I posted a ~100k tweet dataset on the #25bahman protests in Iran.  The corresponding figure of frequencies showed a strong presence on Twitter, with over 500 tweets per 5 minute period at peak.  You can download the … Continue reading → [Read more...]

Today I played a bit with JRI as part of rJava, a Java-R-interface. Here you can learn how to setup for Debian/Ubuntu/akins. [Read more...]

  My first experience with R was in 2007 as a sophomore in undergrad.  As part of a larger project on pricing day-ahead electricity futures, I wanted to cluster locational marginal price (LMP) data from the ISO-NE.  Something like k-means is easy … Continue reading → [Read more...]

I have bad news for those of you trying to produce lucid code! [Read more...]

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Ok, R is very well-considered in certain respects, but there are also some things annoying me... This time it's scoping... [Read more...]

  Let’s say that you want to take a set of documents and apply a computational linguistic technique.  If your method is based on the bag-of-words model, you probably need to pre-process these documents first by segmenting, tokenizing, stripping, stopwording, and … Continue reading → [Read more...]

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In a recent post, I asked for suggestions for introductory R computing books. In particular, I was looking for books that: Assume no prior knowledge of programming. Assume very little knowledge of statistics. For example, no regression. Are cheap, since they are for undergraduate students. Some of my cons aren’... [Read more...]

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Just developed a small crawler to check my online content at binfalse.de in terms of W3C validity and the availability of external links. Here is the code and some statistics... [Read more...]

A review of Zuur et al.'s "A Beginner's Guid to R". This book quickly and efficiently introduces you to the peculiarities of the R programming language so that you can soon move on to what you actually want to use R for. [Read more...]

A brief review of R in a Nutshell by Joseph Adler. This book continues to serve as a useful reference that sits on my desk next to my computer, waiting to tell me the name of that command I've just forgotten. [Read more...]

The foundamental idea of numerical integration is to estimate the area of the region in the xy-plane bounded by the graph of function f(x). The integral was esimated by divide x to small intervals, then add all the small approximations to give a total approximation. Read More: 468 Words Totally [Read more...]

My sabbatical is rapidly coming to an end, and I have to start thinking more and more about teaching. Glancing over my module description for the introductory computational statistics course I teach, I noticed that it’s a bit light on recommend/background reading. In fact it has only two ... [Read more...]

Just found a very nice plugin for using R in Vim. It's unbelievable comfortable! [Read more...]