Posts Tagged ‘ R ’

R brut

July 2, 2015
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R brut

Filed under: Kids, pictures, R, Statistics, University life Tagged: cex, pch, plot, R

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Notes from the Kölner R meeting, 26 June 2015

June 30, 2015
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Notes from the Kölner R meeting, 26 June 2015

Last Friday the Cologne R user group came together for the 14th time. For the first time we met at Startplatz, a start-up incubator venue. The venue was excellent, not only did they provide us with a much larger room, but also with table-football and d...

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A bit about Win-Vector LLC

June 26, 2015
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Win-Vector LLC is a consultancy founded in 2007 that specializes in research, algorithms, data-science, and training. (The name is an attempt at a mathematical pun.) Win-Vector LLC can complete your high value project quickly (some examples), and train...

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Introduction to Monte Carlo methods with R and Bayesian Essentials with R

June 26, 2015
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Introduction to Monte Carlo methods with R and Bayesian Essentials with R

Here are the  download figures for my e-book with George as sent to me last week by my publisher Springer-Verlag.  With an interesting surge in the past year. Maybe simply due to new selling strategies of the published rather to a wider interest in the book. (My royalties have certainly not increased!) Anyway thanks to […]

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Network analysis with igraph

June 23, 2015
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Network analysis with igraph

Suddenly, I had to learn network analysis. Two weeks ago I started with a book by Christakis and Fowler, then a book by Kolaczyk and Csárdi, now here I am in a “how to” analyse network data using R moment. This is much like learning-by-doing knowledge, so may be useful for newcomers, although at this … Read More →

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arXiv frenzy

June 23, 2015
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arXiv frenzy

In the few past days, there has been so many arXiv postings of interest—presumably the NIPS submission effect!—that I cannot hope to cover them in the coming weeks! Hopefully, some will still come out on the ‘Og in a near future: arXiv:1506.06629: Scalable Approximations of Marginal Posteriors in Variable Selection by Willem van den Boom, […]

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Next Kölner R User Meeting: Friday, 26 June 2015

June 23, 2015
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Next Kölner R User Meeting: Friday, 26 June 2015

The next Cologne R user group meeting is scheduled for this Friday, 6 June 2015 and we have an exciting agenda with two talks followed by networking drinks. Data Science at the Commandline (Kirill Pomogajko)An Introduction to RStan and the Stan Modelli...

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Randomized Hobbit

June 22, 2015
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Randomized Hobbit

@wrathematics pointed me to his ngram R package for constructing and simulating from n-grams from text. I’d recently grabbed the text of the hobbit, and so I applied it to that text, with amusing results. Here’s the code I used to grab the text. Then calculate the ngrams with n=2. Simulate some number of words […]

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Big Data and Chess Follow-up: Predictive Piece Values Over the Course of a Game

June 17, 2015
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Big Data and Chess Follow-up: Predictive Piece Values Over the Course of a Game

In a previous post I used the the Million Base 2.2 chess data base to calculate the predictive piece values of chess pieces. It worked out pretty well and here, just for fun, I thought I would check out what happens with the predictive piece values o...

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dynamic mixtures [at NBBC15]

June 17, 2015
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dynamic mixtures [at NBBC15]

A funny coincidence: as I was sitting next to Arnoldo Frigessi at the NBBC15 conference, I came upon a new question on Cross Validated about a dynamic mixture model he had developed in 2002 with Olga Haug and Håvård Rue [whom I also saw last week in Valencià]. The dynamic mixture model they proposed replaces […]

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