November 2010

Because it’s Friday: Epidemiology in 1632

November 5, 2010 | David Smith

I first got interested in epidemiology when I saw the famous John Snow chart (in a Tufte book, I think?) which pinpointed the pump which caused the 1854 cholera outbreak in London. For some reason I'd gotten the impression that this was essentially the birth of epidemiology as a discipline, but ... [Read more...]

ACM Data Mining Camp 3

November 5, 2010 | David Smith

The San Francisco Bay Area chapter of the ACM is will hold its third data mining camp next Saturday (November 13) at the Ebay campus in San José. Like the previous camps, this will be a one-day "unconference"-style event, with an agenda developed ad-hoc on the day according to the ... [Read more...]

Pretty R code in the blog

November 5, 2010 | arthur charpentier

David Smith (alias @revodavid, see also on the Revolutions blog, here) pointed out that my R code was not easy to read (not only due to my computing skills, but mainly because of the typography I use). He suggested that I use the Pretty R tool (her... [Read more...]

New England R Users Group Meeting

November 5, 2010 | Josh Paulson

Attended and thoroughly enjoyed Tuesday night’s New England R Users Group. We meet monthly in the Boston area to discuss the various ways in which people use and interact with the R programming language. Not surprisingly, we have a variety of industries represented. One of us is using R ... [Read more...]

Splines: opening the (black) box…

November 4, 2010 | arthur charpentier

Splines in regression is something which looks like a black box (or maybe like some dishes you get when you travel away from home: it tastes good, but you don't what's inside... even if you might have some clues, you never know for sure*). With spl... [Read more...]

CrossValidated launched!

November 4, 2010 | Rob J Hyndman

The CrossValidated Q&A site is now out of beta and the new design and site name is live. New design The new design looks great, thanks to Jin Yang, our designer-in-residence. Note the normal density icon for accepted answers and the site icon depicting a 5-fold cross-validation (light green ... [Read more...]

Dress your R code for the Web with Pretty R

November 4, 2010 | David Smith

If you have some R code to include in a document, especially a Web-based document like a blog post, the new "Pretty R" feature on inside-R.org can help you make it look its best. Given some raw R code, it will create a HTML version of the code, adding ... [Read more...]

R is Hot: Part 5

November 4, 2010 | David Smith

This the final installment of a five-part article series. You can download the complete article from the Revolution Analytics website. Building a Business The value of R to business is borne out by the experiences of John Lucker and his team of advanced analytics professionals at Deloitte Consulting LLP. John ... [Read more...]

The dead of Juarez

November 4, 2010 | Diego Valle-Jones

Ciudad Juárez became the most violent city in Mexico as a consequence of the vicious war between the Juárez Cartel and the Sinaloa Cartel. So far more than 6,500 people have been murdered in this city since the war started. With the Juárez Cartel significantly weakened, 2010 is set ... [Read more...]

The Answer Depends on the Question

November 3, 2010 | John Myles White

To quote from the preface to the first edition in Jeffreys (1961): ‘It is sometimes considered a paradox that the answer depends not only on the observations but on the question; it should be a platitude.’1 Generalized Linear Models : P. ... [Read more...]

iPhone App Store Acceptance Time / Download Results

November 3, 2010 | C

   Complaints about the iPhone App Store are not uncommon among developers.  The submission process is frustrating at best, you can expect arbitrary rejections, and Apple's policies have not always been particularly open or welcoming. &... [Read more...]

RMongo: Accessing MongoDB in R

November 3, 2010 | tommy

I recently created RMongo, a database access layer to MongoDB in R as an R package. To install RMongo, download it from https://github.com/quid/RMongo/downloads Run: R CMD install RMongo_0.0.17.tar.gz I tried to mimic the RMySQL commands in RMongo. Bel... [Read more...]

Keeping up with election results, with R

November 3, 2010 | David Smith

Yesterday's US election is pretty much over now: most of the results are in, the pundits have offered their political analysis, and there's even been a bit of mathematical analysis of the results, too. But last night as the results were flowing in, R user Brock Tibert just wanted to ... [Read more...]

inline 0.3.7

November 3, 2010 | Thinking inside the box

A bug-fix release 0.3.7 of inline is now on CRAN and at Debian. It fixes a minor bug: when package.skeleton() was called to convert one or more functions created with this package into a package, the corner case of just a single submitted function ... [Read more...]

Rcpp 0.8.8

November 2, 2010 | Thinking inside the box

A bug-fix release 0.8.8 of Rcpp is now available. It is awaiting processing at CRAN, and will be uploaded to Debian once processed at CRAN. In the meantime, sources are available from my local directory here. This release follows on the heels o... [Read more...]

SAS vs Open Source, ctd

November 2, 2010 | David Smith

Following up on the story from last week, where SAS CEO Jim Goodnight said he "hadn't noticed" competition from open-source alternatives, open-source BI vendor Pentaho's "Chief Geek" James Dixon responds: What this means is that SAS has moved from the Igorance phase to the Ridicule phase of battling open source, ... [Read more...]

Comments on probabilities

November 2, 2010 | arthur charpentier

The only thing I remember from courses I had in probability a few years ago is that we also have to clearly defined the event we want to calculate the probability. On the Freakonomics blog, last week, the Israeli lottery was mentioned (here, see a... [Read more...]

Installing rgdal on Mac OS X

November 2, 2010 | James

After running a spatial data analysis with R session today, it became apparent that there are one or two teething problems installing the important rgdal package on Mac OS X operating systems. The usual install.packages(“rgdal”) won’t work. My colleague Jon Reades did some digging around to find ... [Read more...]
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