Monthly Archives: October 2016

Cute Gibbs sampling for rounded observations

October 31, 2016
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Cute Gibbs sampling for rounded observations

I was attending a course of Bayesian Statistics where this problem showed up: There is a number of individuals, say 12, who take a pass/fail test 15 times. For each individual we have recorded the number of passes, which can go from 0 to 15. Because of confidentiality issues, we are presented with rounded-to-the-closest-multiple-of-3 data

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Exploring the human genome (Part 2) – Transcripts

October 31, 2016
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Exploring the human genome (Part 2) – Transcripts

How many transcripts and proteins do genes have? In Exploring the human genome (Part 1) - Gene Annotations I examined Ensembl, Entrez and HGNC gene annotations with AnnotationDbi via three R packages: org.Hs.eg.db, EnsDb.Hsapiens.v79 and TxDb.Hsapiens...

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ggplot2 axis limit gotchas

ggplot2 axis limit gotchas

Setting axis limits in ggplot has behaviour that may be unexpected: any data that falls outside of the limits is ignored, instead of just being hidden. This means that if you are apply a statistic or calculation on the data, like plotting a box and whi...

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Predictability in Network Models

October 31, 2016
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Predictability in Network Models

Network models have become a popular way to abstract complex systems and gain insights into relational patterns among observed variables in almost any area of science. The majority of these applications focuses on analyzing the structure of the network...

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NIMBLE package for hierarchical modeling (MCMC and more) faster and more flexible in version 0.6-1

October 31, 2016
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NIMBLE version 0.6-1 has been released on CRAN and at  r-nimble.org.   NIMBLE is a system that allows you to: Write general hierarchical statistical models in BUGS code and create a corresponding model object to use in R. Build Markov chain Monte Carlo (MCMC), particle filters, Monte Carlo Expectation Maximization (MCEM), or write generic algorithms

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R 3.3.2 now available

October 31, 2016
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R 3.3.2, the latest update to the R language, was released today. Binary releases for Linux and Mac are available now from your local CRAN mirror, and the Windows builds will be available shortly. As a minor update to the R 3.3 series, this update focuses mainly on fixing bugs and doesn't make any major changes to the langauge....

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ShinyProxy 0.6.0 released!

October 31, 2016
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Monday 31 October 2016 - 15:58 ShinyProxy is a novel, open source platform to deploy Shiny apps for the enterprise or larger organizations. Why is this needed? There is currently no valid open source alternative that offers this functionality. ...

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Online R courses at Udemy for only $10 (today is the last day)

October 31, 2016
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Online R courses at Udemy for only $10 (today is the last day)

Udemy is offering readers of R-bloggers access to its global online learning marketplace for only $10 per course! This deal (offering over 50%-90% discount) is for hundreds of their courses – including many R-Programming, data science, machine learning etc. Click here to browse ALL (R and non-R) courses Advanced R courses:  The Comprehensive Programming in R Course (25 Hours of video) Graphs in R (ggplot2,...

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Running the Numbers – How Can Hamilton Still Take the 2016 F1 Drivers’ Championship?

October 31, 2016
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Running the Numbers – How Can Hamilton Still Take the 2016 F1 Drivers’ Championship?

Way back in 2012, I posted a simple R script for trying to work out the finishing combinations in the last two races of that year’s F1 season for Fernando Alonso and Sebastien Vettel to explore the circumstances under which Alonso could take the championship (Paths to the F1 2012 Championship Based on How They

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Weighted Effect Coding: Dummy coding when size matters

October 31, 2016
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If your regression model contains a categorical predictor variable, you commonly test the significance of its categories against a preselected reference category. If all categories have (roughly) the same number of observations, you can also ...

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