Monthly Archives: June 2012

Trying for a baby? Here’s how long it might take.

June 29, 2012
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Trying for a baby? Here’s how long it might take.

Wanting to start a family the natural way? For a healthy 45-year-old woman, you may be in for a five-year wait. That's the conclusion of Richie Cotton, a UK-based data scientist, who discovered when he and his girlfriend wanted to start a family that statistics on how long it takes to get pregnant are hard to come by. The...

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Horizon Plot Already Available

June 29, 2012
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Horizon Plot Already Available

When I wrote Cubism Horizon Charts in R, I should have known that horizon plot functionality already exists in R http://rgm2.lab.nig.ac.jp/RGM2/func.php?rd_id=latticeExtra:horizonplot and in this case in one of my already favorite packages latticeExtra...

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multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If…

June 29, 2012
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multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If…

multiplicitiesoffreedom demonstrates Chaos Theory in Excel. If he filled in more initial values, you would see a thick bar—like a picture of white-noise.Butterflies flapping their wings in Vermont to change the wind in Hangzhou? A drop of water on ...

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Bayesian credible intervals in the mainstream medical literature

June 29, 2012
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I have sometimes heard complaints from collaborators that it will be impossible to have their work published in the mainstream literature unless a p-value is reported. This post is to report yet another counterexample that was recently published; a meta-analysis for the odds of perioperative bleeding complications in patients taking one of several anticoagulant/antiplatelet drugs.

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Impact of hardware characteristics on detectable fault behavior

June 29, 2012
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Impact of hardware characteristics on detectable fault behavior

Preface. This is the first of what I hope will be many posts analysing experimental data, that will eventually end up in my empirical software engineering with R book (this experiment was chosen because it happens to be the one I am currently working on; having just switched to using Asciidoc I have a backlog

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Decline Effect in Linguistics?

June 29, 2012
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Josef Fruehwald writes: In the past few years, the empirical foundations of the social sciences, especially Psychology, have been coming under increased scrutiny and criticism. For example, there was the New Yorker piece from 2010 called “The Truth Wears Off” about the “decline effect,” or how the effect size of a phenomenon appears to decrease The post Decline...

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The inner workings of R objects

June 29, 2012
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The inner workings of R objects

R is an object oriented language. You provide a name and R supplies that name with various properties. In the simplest case, you can assign a number to a name. This will only have a few attributes, such as its class, length etc: i <- 5 names(i) #NULL class(i) # "integer" attr(i, "name") #NULL dim(i)

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Rcpp 0.9.13

June 29, 2012
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The bug-fix in version 0.9.12 of Rcpp turned out to be incomplete, so a new version 0.9.13 is now on CRAN and will get to Debian shortly.The Rcpp::Enviroment constructor is now properly fixed (using the global environment as a default value). As ...

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Solving mastermind with R

June 29, 2012
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In my last post I have shown a solution to classical sorting problem in R. So I thought that this time it would be nice to generate a strategy for playing Mastermind using R.It was shown by D.E. Knuth that Mastermind code can be bro...

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impacTwit : How big is your work on twitter?

June 29, 2012
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impacTwit : How big is your work on twitter?

There’s a great Tom Waits song from the album “Mule Variations” called “Big in Japan”. The beauty of saying you’re big in Japan is that no one can ever really verify the statement (or at least that was more true in 1999). You might assert “my work is big on twitter”, and hey, how would I know?...

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