Monthly Archives: September 2011

A shortcut function for install.packages() and library()

September 10, 2011
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A shortcut function for install.packages() and library()

I enjoy trying difference kind of R packages. Since I have more than 1 computers (1 at home, 1 at office and a laptop) it is troublesome to check whether I have installed some new packages for each computer. Therefore i wrote a function to load and install packages at once. If the package does

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Visualizing Bayesian Updating

September 10, 2011
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Visualizing Bayesian Updating

One of the most straightforward examples of how we use Bayes to update our beliefs as we acquire more information can be seen with a simple Bernoulli process. That is, a process which has only two  possible outcomes. Probably the most commonly thought of example is that of a coin toss. The outcome of tossing

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Polynomial Interpolation with R

September 10, 2011
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Polynomial Interpolation with R

As a first step to produce some useable code for spline interpolation/approximation in R, I set out to first do polynomial interpolation to see how I get along. It's not that there is no spline interpolation software for R, but I find it a bit limited. splinefun, for example, can do only 1-dimensional interpolation. interp{akima} can do bicubic splines...

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Getting data from the Infochimps Geo API in R

September 10, 2011
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Getting data from the Infochimps Geo API in R

I am very intrigued by the Infochimps Geo API, so wanted to play around with it a little bit and pull the data into R. I’ll start by getting data from the American Community Survey Topline API for a 10km area around where I live. First some setup code here. It imports a couple libraries

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Unlocking Big Data with R

September 9, 2011
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I have an article out this week on ReadWriteHack: Unlocking Big Data with R. My thanks to the folks at ReadWriteWeb for giving us the opportunity to showcase some of the many real-world Big Data applications of R. Here are some additional links about the applications mentioned in the article: New York Times: Destruction of the Haiti earthquake; 2010...

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Revolution Newsletter: September 2011

September 9, 2011
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The most recent edition of the Revolution Newsletter is out. The news section is below, and you read the full September edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Using Revolution R with Hadoop: Revolution Analytics has released three open-source R packages, making it...

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My take on an R introduction talk

September 9, 2011
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My take on an R introduction talk

Here is a short intro R talk I gave today...for what it's worth...R Introduction View more presentations from schamber

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Looking to hire data scientists

September 9, 2011
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We are a global management consulting firm and are looking for data scientists in our team in New York/Washington DC and Gurgaon/Chennai (India). There are full-time and internship (New York) opportunities. There are multiple positions i...

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Le Monde puzzle [#739]

September 9, 2011
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Le Monde puzzle [#739]

The weekend puzzle in Le Monde this week is again about a clock.  Now, the clock has one hand and x ticks where a lamp is either on or off. The hand moves from tick to tick and each time the lights go on or off depending on whether or not both  neighbours were in

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I’m Starting a New Position at the University of Virginia

September 8, 2011
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I’m Starting a New Position at the University of Virginia

I just accepted an offer for a faculty position at the University of Virginia in the Center for Public Health Genomics / Department of Public Health Sciences. Starting in October I will be developing and directing a new centralized bioinformatics core ...

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