January 2012

Scraping Flora of North America

January 27, 2012 | Recology - R

So Flora of North America is an awesome collection of taxonomic information for plants across the continent. However, the information within is not easily machine readable. So, a little web scraping is called for. rfna is an R package to collect inf... [Read more...]

Parallel R Model Prediction Building and Analytics

January 26, 2012 | Vik Paruchuri

Modifying R code to run in parallel can lead to huge performance gains. Although a significant amount of code can easily be run in parallel, there are some learning techniques, such as the Support Vector Machine, that cannot be easily parallelized. However, there is an often overlooked way to speed ... [Read more...]

All I Don’t Know About Surveys

January 26, 2012 | klr

I believe my survey experiment Survey Time illustrated later in this post and in Google’s Visualization of Survey Responses mainly pointed out how ignorant I am about the very complicated science of surveying from building the survey to the visualiza...
[Read more...]

SAS Macro Simplifies SAS and R integration

January 26, 2012 | Ken Kleinman

Many of us feel very enthusiastic about R. It's free, it features cutting edge applications, it has a large community of users contributing for mutual benefit, and on and on. There are also many things to like about SAS, including stability, backwards...
[Read more...]

Creative Commons license

January 26, 2012 | anandram

Copyright notice: I hereby release all of the writing  content that is tagged by R, under the cc-by-sa copyrights (date: Jan 26 2012), as long as the copied content comes with proper attribution which also  includes a link to the source of the article . [Read more...]

Exploring the functions in a package

January 26, 2012 | richierocks

Sometimes it can be useful to list all the functions inside a package. This is done in the same way that you would list variables in your workspace. That is, using ls. The syntax is ls(pos = "package:packagename"), which is easy enough if you can remember it. Unfortunately, I ... [Read more...]

Hottest 100 for 2011

January 26, 2012 | Stubborn Mule

Another year, another Australia Day. Another Australia Day, another Triple J Hottest 100. And that, of course, means an excellent excuse to  set R to work on the chart data. For those outside Australia, the Hottest 100 is a chart of the most popular songs of the previous year, as voted by ... [Read more...]

Paper on org-mode and reproducible research

January 26, 2012 | rmkrug

As I was talking recently about reproducible research, I have to post this. A new paper by Eric Schulte, Dan Davison, Thomas Dye, Carsten Dominik. If you haven’t heard about them, you haven’t been on the org-mode mailing list. They could be called the main contributors to org-mode ... [Read more...]

Announcing the winners of the Applications of R in Business contest

January 25, 2012 | David Smith

It's with great pleasure that the team at Revolution Analytics announces the winners of the inaugural "Applications of R in Business" contest: Grand Prize ($10,000): Shannon Terry and Ben Ogorek, Nationwide Insurance for 'A Direct Marketing In-flight Forecasting System' Runner Up Prize ($5,000): Jeffrey Breen, Atmosphere Research Group for 'Mining Twitter for ... [Read more...]

ABC [PhD] course

January 25, 2012 | xi'an

As mentioned in the latest post on ABC, I am giving a short doctoral course on ABC methods and convergence at CREST next week. I have now made a preliminary collection of my slides (plus a few from Jean-Michel Marin’s), available on slideshare (as ABC in Roma, because I ... [Read more...]

ESPN Prediction Performance for the NFL

January 25, 2012 | Patrick Rhodes

Description:ESPN 'experts' predict the National Football League wins/losses each week.  The above chart shows the percentage of their correct guesses and an overall trend, week by week.Data:http://espn.go.com/nfl/picksAnalysis:The graph shows an i...
[Read more...]
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