Monthly Archives: December 2011

Decimal to Binary in "R"

December 5, 2011
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Decimal to Binary in "R"

Lately...I've been learning "R"...that weird programming language aimed for Statistics and Statistical programming...and I really like it...so as usual, I needed to create my own Decimal to Binary application -;)binary bsum bexp while (p_number > 0) { digit p_number bsum ...

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Vote Compass: visualizing Canadian poll results with R

December 5, 2011
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Vote Compass: visualizing Canadian poll results with R

Vote Compass is an online "electoral literacy application, whose goal is to encourage engagement with and stimulate discussion around the policy platforms of Canada's political parties. In the lead-up to the 2011 Canadian election, Vote Compass collected the results of an on-line 10-minute survey from more than 2 million participants, and used the results to align voters with the...

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International Open Data Hackathon

December 5, 2011
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International Open Data Hackathon

This past Saturday, I hung out at the Seattle branch of the International Open Data Hackathon. The event was hosted at the Pioneer Square office of Socrata, a small company that helps governments provide public open data. A pair of data analysts from Tableau were showing off a visualization for the Washington...

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A pure R poker hand evaluator

December 5, 2011
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A pure R poker hand evaluator

There's already a lot of great posts out there about poker hand evaluators, so I'll keep this short.  Kenneth J. Shackleton recently released a very slick 5-card and 7-card poker hand evaluator called SpecialK.  This evaluator is li...

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From datasets to algorithms in R

December 5, 2011
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Many statistical algorithms are taught and implemented in terms of linear algebra. Statistical packages often borrow heavily from optimized linear algebra libraries such as LINPACK, LAPACK, or BLAS. When implementing these algorithms in systems such as Octave or MATLAB, it is up to you to translate the data from the use case terms (factors, categories, numerical variables)...

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R-bloggers

December 5, 2011
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For a long time, I have relied on R-bloggers for new, interesting, arcane, and all around useful information related to R and statistics. Now my R-related material is appearing there. If you use the R package at all, R-bloggers should be in your feed a...

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The Art of R Programming – my two cents

December 5, 2011
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The Art of R Programming – my two cents

What makes this book different from other books about R is stated clearly by the author Norman Matloff in the introduction: "This book is not a compendium of the myriad types of statistical methods that are available in the wonderful R package. It r...

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The volatility mystery continues

December 5, 2011
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The volatility mystery continues

How do volatility estimates based on monthly versus daily returns differ? Previously The post “The mystery of volatility estimates from daily versus monthly returns” and its offspring “Another look at autocorrelation in the S&P 500″ discussed what appears to be an anomaly in the estimation of volatility from daily versus monthly data. In recent times … Continue reading...

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I may have been hasty…

December 4, 2011
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I think one of the real reasons that I haven't liked R is the default interface blows (sucks, whatever).  I just discovered the Eclipse plugin StatET.  This things rules.  Contextual help, completion, object browser, data browser, etc. &...

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Steve Jobs’ 2005 Stanford Commencement Address

December 4, 2011
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Given that there are almost 13 million views of Steve Jobs’ commencement address, I am certain that I missed this video when it went viral. I am glad that I did not see it until now because I may not have appreciated his words of wisdom. And although...

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