Monthly Archives: November 2012

Unbelievable and Amazing R Shiny–Web Parameter Test in 1.5 Hours

November 9, 2012
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Unbelievable and Amazing R Shiny–Web Parameter Test in 1.5 Hours

Life keeps getting better and better.  Yesterday, I discovered the absolutely unbelievable and amazing work RStudio has done with Shiny employing one of my favorite R packages websockets.  As proof of the ease and quality, within a couple of ...

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How Microsoft Can Use Windows 8 to Dominate the Tech Industry

November 9, 2012
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How Microsoft Can Use Windows 8 to Dominate the Tech Industry

Windows 95 transformed the PC software market and established Microsoft as the dominant player.  Can Microsoft do it again?  Can it use the release of Windows 8 to elevate its entire brand image?  More importantly to some of us, can Microsoft use statistical modeling to help it achieve its goal?Of course, the answer depends on what you mean by...

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Interview with Tom Louis – New Chief Scientist at the Census Bureau

November 9, 2012
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Interview with Tom Louis – New Chief Scientist at the Census Bureau

Tom Louis Tom Louis is a professor of Biostatistics at Johns Hopkins and will be joining the Census Bureau through an interagency personnel agreement as the new associate director for research and methodology and chief scientist. Tom has an impressive history of … Continue reading →

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Interactive color picker, using locator()

November 9, 2012
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Interactive color picker, using locator()

I mostly wrote this just to see how locator() works, and ended up making an HCL color picker, so you can make your own visually offensive rainbow color palettes! Or, you can make your own nice color palettes. It is up to you. Essentially, this script...

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R midterms

November 9, 2012
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R midterms

Here are my R midterm exams, version A and version B in English (as students are sitting next to one another in the computer rooms), on simulation methods for my undergrad exploratory statistics course. Nothing particularly exciting or innovative! Dedicated ‘Og‘s readers may spot a few Le Monde puzzles in the lot… Two rather entertaining

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Project Euler — problem 23

November 9, 2012
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Officially, it’s weekend. I’m solving this 23rd Euler problem just before my supper. A perfect number is a number for which the sum of its proper divisors is exactly equal to the number. For example, the sum of the proper divisors … Continue reading →

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Another crosshairs

November 8, 2012
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Another crosshairs

C. DeSante over at is.R() has PEBOS as well, but turned it into a great explanation of the way predictions like Nate Silver's work.For a while the 538 team had PEBOS as well: "The FiveThirtyEight team is still recuperating, but the election provided a fresh supply...

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R user group

November 8, 2012
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The first R user group in Russia has brings together R users in Perm city. First R UseR meetup was 4 october. Arbuzov Vyacheslav presented an overview of the packages for data downloading. peRm R group. Review of packages for … Continue reading →

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Data types part 2: Using classes to your advantage

November 8, 2012
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Data types part 2: Using classes to your advantage

Last week I talked about objects including scalars, vectors, matrices, dataframes, and lists.  This post will show you how to use the objects (and their corresponding classes) you create in R to your advantage.First off, it's important to remember...

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R Code for A Justification and Application of Eigenvector Centrality

November 8, 2012
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R Code for A Justification and Application of Eigenvector Centrality

Leo Spizzirri  does an excellent job of providing mathematical intuition behind eigenvector centrality. As I was reading through it, I found it easier to just work through the matrix operations he proposes using R.  You can find his paper her...

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