Posts Tagged ‘ Data ’

Sunday Data/Statistics Link Roundup (11/4/12)

November 4, 2012
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Brian Caffo headlines the WaPo article about massive online open courses. He is the driving force behind our department’s involvement in offering these massive courses. I think this sums it up: `“I can’t use another word than unbelievable,” Caffo said. … Continue reading →

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Automatic drug utilization reports with R and ggplot2

September 18, 2012
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Automatic drug utilization reports with R and ggplot2

This program takes a data set of drug utilisation of 4 fictional drugs in 10 fictional hospitals and plots each time-series with a locally weighted regression (Lowess) trend line. It also places an time-series trend of the usage for each … Continue reading →

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Mapping Bike Accidents in R

September 14, 2012
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Mapping Bike Accidents in R

At last weekend’s Hack Ta Ville event here in Montreal, I joined up with some talented urban planners and web devs to realize Vélobstacles. The idea of the project is to crowd source information on cycling conditions around the city. As with any crowd sourcing project, we were faced with the problem of seeding the

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Economic geography of the eastern USA circa 1999, median incomes…

August 25, 2012
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Economic geography of the eastern USA
circa 1999, median incomes…

Economic geography of the eastern USA circa 1999, median incomes by zip code Code and data source to follow in a longer post.

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Why we are teaching massive open online courses (MOOCs) in R/statistics for Coursera

August 10, 2012
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Editor’s Note: This post written by Roger Peng and Jeff Leek.  A couple of weeks ago, we announced that we would be teaching free courses in Computing for Data Analysis and Data Analysis on the Coursera platform. At the same time, a number of ot...

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Download and parse EDHEC hedge fund indexes

June 4, 2012
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Download and parse EDHEC hedge fund indexes

In our pre-conference workshop, Brian Peterson and I worked with the EDHEC hedge fund indexes as a way to demonstrate how to use PortfolioAnalytics within the context of long-term allocation problems. Although they are not investible, these indexes are probably more representative than most given that they are, in fact, meta-indexes. Other indexes might be

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Grexit stage left: visualizing the online discussion around Greece’s possible Euro exit

May 24, 2012
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Grexit stage left: visualizing the online discussion around Greece’s possible Euro exit

  While Tsipras and his Syriza coalition have been busy in Greek parliament, the Internet has been a-buzz with speculation that their platform will result in a Greek exit from the Euro currency.  This prospect, affectionately dubbed “Grexit” by Citi… Read more ›

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Visualizing the #nonato Twitter hashtag – time series and top users

May 21, 2012
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Visualizing the #nonato Twitter hashtag – time series and top users

  The NATO summit is currently being held in Chicago, and, as is typical for NATO or G# summits, the streets and tweets are full of dissent.  In the spirit of my past investigations of online dissent (#jan25, #25bahman, #12fev,… Read more ›

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reshape (from base) Explained: Part II

May 5, 2012
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reshape (from base) Explained: Part II

Part II Explains More Complex  Wide to Long With base reshape  In part I of this base reshape tutorial we went over the basics of reshaping data with reshape.  We learned two rules that help us to be more efficient … Continue reading →

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reshape (from base) Explained: Part I

May 2, 2012
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reshape (from base) Explained: Part I

This Post Will Explain the Basics of Wide to Long With base reshape (part I) Often your data set is in wide format and some sort of analysis or visualization requires putting the data set into long format.  Hadely Wickham … Continue reading →

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