Monthly Archives: June 2012

NBA Playoffs Update 5 (5-4)

June 9, 2012
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NBA Playoffs Update 5 (5-4)

This is the sixth post in my series on predicting the NBA playoffs with an algorithm. After the Boston loss in their last game, the algorithm is now 5-4 in the playoffs. Hopefully it is correct tonight! Open Sourcing the CodeI have had a couple of req...

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knitr Performance Report 4

June 8, 2012
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knitr Performance Report 4

please see knitR Performance Report 3 (really with knitr) and dprint, knitr Performance Report–Attempt 3, knitr Performance Report-Attempt 2 and knitr Performance Report-Attempt 1 Here is another iteration of the ongoing performance reporting attempt...

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OpenCPU at useR 2012

June 8, 2012
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OpenCPU will be presented at useR 2012 in Nashville! Have a look at the abstract and the conference program. In the presentation we will introduce 3 inter-related projects which build on R: OpenCPU An open source framework for web development with R. Ohmage An open source system for large scale participatory sensing using mobile phones. ...

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Evaluation of Tactical Approaches

June 8, 2012
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Evaluation of Tactical Approaches

Tactical approaches are often chosen based on the best cumulative return which implicitly incorporates significant hindsight bias.  Just because an approach dominates for a period of time does not indicate that it will be the best approach.  ...

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R starter resources

June 8, 2012
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R starter resources

I’m hardly the first person you would want to talk to about learning statistics in R. But if you’re bent on teaching yourself R, and you’ve ended up at my blog, here are some resources I found useful. (No opinions here about whether R is good/bad better/worse than Excel, Minitab, Matlab, Octave, SPSS, Stata, SAS,

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Data Mining with R

June 8, 2012
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Earlier this week, Revolution Analytics' Joe Rickert gave a webinar Introduction to R for Data Mining. You can watch the replay below: If you're already familiar with R and the basics of data mining, you might want to skip ahead to the 13-minute mark where Joe's live demo begins. There you'll see practical examples of using R for decision...

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The world’s top seven airlines in the style of…

June 8, 2012
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The world’s top seven airlines in the style of…

The world’s top seven airlines in the style of NASA’s earth at night. (via Mapping the World’s Biggest Airlines | Spatial Analysis)

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Reproducible Research Using Sweave and LaTeX

June 8, 2012
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Reproducible Research Using Sweave and LaTeX

Here are the slides given during the Montreal R User Group workshop on April 30, 2012. RR-MtlRUsers.beamer

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RSMC 2011 Typhoon Tracks

June 8, 2012
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RSMC 2011 Typhoon Tracks

While at Puerto Princesa Airport in Palawan and waiting for my flight back to Manila, I opened my laptop and started doing what I usually do (practice may skills in R) on my idle time. With some inspirations from spatialanalysis.co.uk, I tried to make ...

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R, the master troll of statistical languages

June 8, 2012
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R, the master troll of statistical languages

Warning: what follows is a somewhat technical discussion of my love-hate relationship with the R statistical language, in which I somehow manage to waste 2,400 words talking about a single line of code. Reader discretion is advised. I’ve been using R to do most of my statistical analysis for about 7 or 8 years now–ever

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