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In a recent interview with DataInformed's Ian Murphy, I discussed the history of the open-source R project and how Revolution Analytics is building on R to compete with legacy statistical software such as SAS and SPSS. Other topics we touched on during the 20-minute discussion included: R's growth in academia, ... [Read more...]

Here I present an application that quantifies Wikipedia page views. It can visualise any topic in any language. It is (shamelessly) based on an application by the blogger Andrew Clark (pssguy), whose code is available here.I have added:multi ... [Read more...]

A couple of weeks ago Bob wrote about a post about a research note that was recently accepted to the iConference. In it we outline the beginnings of a research project where we look at the interaction of different media platforms (Twitter and Blogs) with more traditional sources. In this ... [Read more...]

I just got a copy of Winston Chang's book R Graphics Cookbook, published by O'Reilly Media. This book follows now a series of O'Reilly books on R, including an R Cookbook. Winston Chang is a graduate student at Northwestern University but … Continue reading → [Read more...]

I just got this from a former student who is working on a project with me: Awesome.     [Read more...]

First update on my research, details here. [Read more...]

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Another preparatory step before I start learning about stats in the context of Formula One… There are a couple of things I’m hoping to achieve when I actually start the journey: 1) finding ways of using stats to help to pull out patterns and events that are interesting from a ... [Read more...]

We've written before about how you can use the Rcpp package to speed up R, by converting performance-critical snippets of R code to C++. (Rcpp makes it easy -- you don't even have to be a C++ expert.) If you haven't tried it out yet, you might want to browse ... [Read more...]

Just as a quick reply to a friend of mine who suggested testing the swearing capabilities of The Dude:Click to enlarge.As you can see, "The Big Lebowski" (2.79 % swear words) takes the Tarantino threshold (0.98 %) easily, but it's no match against "Res... [Read more...]

My tsbugs package has gone up on CRAN. The functions in the tsbugs package are aimed to automate the writing of time series models to run in WinBUGS (Lunn et al., 2000) or OpenBUGS (Lunn et al., 2009). I created … Continue reading → [Read more...]

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Version 1.0 of sqlutils has been released to CRAN. The sqlutils package is designed to manage a library of SQL files. This package grew out of the needs of an Office of Institutional Research where the vast majority of analysis is conducted on data from our Student Information System (SIS) which ... [Read more...]

Following on from last week's post I will continue to go through the paper Regression models based on log-incremental payments by Stavros Christofides [1]. In the previous post I introduced the model from the first 15 pages up to section F. Today I will progress with sections G to K which illustrate ... [Read more...]

[This article was first published on OutSpoken Data, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to share your [Read more...]

Sawtooth Software has created a good deal of confusion with its latest sales video published on YouTube.  I was contacted last week by one of my clients who had seen the video and wanted to know why I was not using such a powerful technique for me... [Read more...]

It's been a little while since we've rounded up the new local R user groups around the world, so here are the latest ones on the scene: Edmonton, Canada: The Edmonton R User Group is the first in the Canadian province of Alberta and the most northerly group in North ... [Read more...]

Sometimes this is my life. But it’s so satisfying when you write a program that saves you time! Here is an example. The Problem:  For several years at Hopkins I have been involved in teaching a large (500+ person) introductory Biostatistics class. This … Continue reading → [Read more...]

Call me old-fashioned, but I never saw the movie The Social Network until last year (at a private screening). In case you also missed it, it's the Hollywood version of how Facebook.com came into being. Quite apart from any artistic criticisms, I have a genuine psychological problem with movies ... [Read more...]