# Monthly Archives: February 2011

## R overtakes SAS and Matlab in programming language popularity

February 10, 2011
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Tiobe Software ranks the popularity of programming languages based on references in search engines. While the methodology might be debated in terms of the absolute rankings it produces, it is quite interesting to see how the rankings fluctuate over time: Tiobe has produced a monthly report of rankings based on this methodology since 2001. In the Tiobe Programming Community...

## Stata or R

February 10, 2011
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Recently I came across a complex model written in Access with complex SQL queries all over the place. The engineer who was maintaining it and I did some analysis and agreed that the model was using SQL in an unnatural way (things SQL isn't good at) - c...

## Stata or R

February 10, 2011
By

Recently I came across a complex model written in Access with complex SQL queries all over the place. The engineer who was maintaining it and I did some analysis and agreed that the model was using SQL in an unnatural way (things SQL isn't good at) - c...

## When will my papers appear as references (if they do…) ?

February 10, 2011
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Following my post on citations in academic journals, I wanted to go one step further in the understanding of the dynamic of citations. So here, the dataset looks like that: for each article, we have the name of the journal, the year of publicatio...

## Model weights for model choice

February 9, 2011
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$Model weights for model choice$

An ‘Og reader. Emmanuel Charpentier, sent me the following email about model choice: I read with great interest your critique of Peter Congdon’s 2006 paper (CSDA, 50(2):346-357) proposing a method of estimation of posterior model probabilities based on improper distributions for parameters not present in the model inder examination, as well as a more general

## Stationarity

February 9, 2011
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In time series work you often run into difficulties in modeling processes where the overall level of one variable (an input, for example) changes over time but the levels of another variable (an output) do not change. For instance if … Continue reading →

## New R User Groups in Europe

February 9, 2011
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It's great to see the growth in R user groups around the world, and now there are three new ones in western Europe: In Amsterdam, a new R user group has just formed, called amst-R-dam. They are just scheduling their first meeting now (vote here for a date) which will be in the next 3-4 weeks; In Geneva, the...

## Merci taxi!

February 9, 2011
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I am in Montpellier today for a general meeting of our EMILE ANR grant bi-yearly meeting, discussing ABC model choice and new applications of simulation methods in population genetics, including an upgrade of DIYABC into the 2.0 version. (The above is a picture comparing “true” Bayes factors with ABC versions, commented in my Zürich talk

## Troubling news for the teaching of evolution

February 9, 2011
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A recent survey reported in Science ("Defeating Creationism in the Courtroom, but not in the Classroom"),  suggests that high school teachers are not teaching evolution to the fullest extent, say, that grammar is being taught in the English c...

## Twos and Tens in Four Lines

February 9, 2011
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To chart the spread between 2-Year treasury yields and 10-Year treasury yields,  please type the simple code listed below into your R console. That is all, carry on as you were.require(quantmod)getSymbols(c("DGS10", "DGS2"), src="FRED")Ten_Two <...