Monthly Archives: January 2013

Initialize yourself

January 3, 2013
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(This article was first published on Just Another R Blog, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on his blog: Just Another R Blog. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL,...

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Computers are Machines

January 3, 2013
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When people try out Julia for the first time, many of them are worried by the following example: 1 2 3 4 5 6 7 julia> factorial(n) = n == 0 ? 1 : n * factorial(n - 1)   julia> factorial(20) 2432902008176640000   julia> factorial(21) -4249290049419214848 If you’re not familiar with computer architecture, this

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What your choice of statistics software says about you

January 3, 2013
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Sean Taylor, a PhD candidate in Information Systems at NYU’s Stern School of Business, describes the "Statistics Software Signal" and his observation that some software packages are correlated with bad science. While, I don't agree with all of his points (some fine analyses have been done with Stata, for example), I thought this was an interesting take on the...

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Accessing environments

January 3, 2013
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Extending R with C++ code by using Rcpp typically involves function calls by leveraging the existing .Call() interface of the R API. Passing values back and forth is then done in manner similar to programming with functions.However, on occassion it i...

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The GARCH-DCC Model and 2-stage DCC(MVT) estimation.

January 2, 2013
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The GARCH-DCC Model and 2-stage DCC(MVT) estimation.

This short demonstration illustrates the use of the DCC model and its methods using the rmgarch package, and in particular an alternative method for 2-stage DCC estimation in the presence of the MVT distribution shape (nuisance) parameter. The theoretical background and representation of the model is detailed in the package’s vignette. The dataset and period

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Genetic Algorithms with gaoptim package

January 2, 2013
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Two days ago i just submitted my first R package: gaoptim. For my surprise, the next day it was already living on CRAN. In this post i want to show you how to use gaoptim to perform a simple function maximization. This same task could be accomplished ...

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Data-driven science is a failure of imagination

January 2, 2013
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Data-driven science is a failure of imagination

Professor Hans Rosling certainly is a remarkable figure. I recommend watching his performances. Especially the BBC's "Joy of Stats" is exemplary. Rosling sells passion for data, visual clarity and great deal of comedy. He represents the data-driven paradigm in science. What…Read more →

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Let’s Rapplicate!

January 2, 2013
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Let’s Rapplicate!

It's been a while since you last heard from Rapporter, and we came up with a (hopefully) good excuse for our absence from the blogosphere: Rapplications. To demystify: we developed an API that allows you to create dynamic reports by using the R templates and datasets available on Rapporter. All you need is an account on Rapporter (you can...

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(Semi-)automating the R markdown to blogger workflow

January 2, 2013
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In his recent post 100 most read R posts for 2012 (stats from R-bloggers) – big data, visualization, data manipulation, and other languages Tal Galili - the guy behind R-Bloggers - presents his wishlist for 2013. Among other things he states&ldquo...

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100 most read R posts in 2012 (stats from R-bloggers) – big data, visualization, data manipulation, and other languages

January 2, 2013
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100 most read R posts in 2012 (stats from R-bloggers) – big data, visualization, data manipulation, and other languages

R-bloggers.com is now three years young. The site is an (unofficial) online journal of the R statistical programming environment, written by bloggers who agreed to contribute their R articles to the site. Last year, I posted on the top 24...

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