Articles by Andrie de Vries

New features in checkpoint v0.3.15 now on CRAN

September 16, 2015 | Andrie de Vries

by Andrie de Vries I am pleased to announce that we have released a new version of the checkpoint package to CRAN. The goal of checkpoint is to solve the problem of package reproducibility in R. Easy reproducible workflow using checkpoint() We first announced checkpoint and the Reproducible R Toolkit ... [Read more...]

New R titles available in Chinese

August 26, 2015 | Andrie de Vries

by Andrie de Vries A few days ago I received an unexpected parcel in my letterbox. To my delight, it turned out to be a translation into Simplified Chinese of R for Dummies, co-authored by myself and Joris Meys. Let me clarify: Joris and I wrote the book, but were ... [Read more...]

Contracting and simplifying a network graph

August 5, 2015 | Andrie de Vries

by Andrie de Vries In a previous post, I used page rank and community structure to create a plot of CRAN. This plot used vibrant colours to allow us to see some of the underlying structure of CRAN. However, much of this structure was still obfuscated by the amount of ... [Read more...]

The most popular programming languages on StackOverflow

July 29, 2015 | Andrie de Vries

by Andrie de Vries Last week, IEEE Spectrum said R rised to #6 in Top Programming languages. They use a weighted methodology of 12 factors to compute their score. Among these factors is the activity on social programming websites, including StackOverflow and Github. I recently used to query the ... [Read more...]

The network structure of CRAN

July 8, 2015 | Andrie de Vries

by Andrie de Vries My experience of UseR!2015 drew to an end shortly after I gave a Kaleidoscope presentation discussing "The Network Structure of CRAN". My talk drew heavily on two previous blog posts, Finding the essential R packages using the pagerank algorithm and Finding clusters of CRAN packages using ... [Read more...]

News from UseR!2015 – the RHadoop tutorial

July 1, 2015 | Andrie de Vries

by Andrie de Vries Today is the first day of UseR!2015 conference in Aalborg in Northern Denmark. But yesterday was a day packed with 16 tutorials on a range of interesting topics. I submitted a proposal many months ago to run a session on using R in Hadoop and was very ... [Read more...]

Monitoring progress of a foreach parallel job

February 24, 2015 | Andrie de Vries

by Andrie de Vries R has strong support for parallel programming, both in base R and additional CRAN packages. For example, we have previously written about foreach and parallel programming in the articles Tutorial: Parallel programming with foreach and Intro to Parallel Random Number Generation with RevoScaleR. The foreach package ... [Read more...]

An update to the checkpoint package

February 18, 2015 | Andrie de Vries

by Andrie de Vries During October 2014 we announced RRT (the Reproducible R Toolkit) that consists of the checkpoint package and the MRAN. In January, David Smith followed up with another post about reproducibility using Revolution R Open. Since then, we've had several requests for new features and enhancements. The development ... [Read more...]

How the MKL speeds up Revolution R Open

October 22, 2014 | Andrie de Vries

by Andrie de Vries Last week we announced the availability of Revolution R Open, an enhanced distribution of R. One of the enhancements is the inclusion of high performance linear algebra libraries, specifically the Intel MKL. This library significantly speeds up many statistical calculations, e.g. the matrix algebra that ... [Read more...]

Revisiting package dependencies

July 29, 2014 | Andrie de Vries

by Andrie de Vries In my previous post I wrote about how to identify and visualize package dependencies. Within hours, Duncan Murdoch (member of R-core) identified some discrepancies between my list of dependencies and the visualisation. Since then, I fixed the dispecrancies. In this blog post I attempt to clarify ... [Read more...]

Dependencies of popular R packages

July 8, 2014 | Andrie de Vries

With the growing popularity of R, there is an associated increase in the popularity of online forums to ask questions. One of the most popular sites is StackOverflow, where more than 60 thousand questions have been asked and tagged to be related to R. On the same page, you can also ... [Read more...]

Using survival models for marketing attribution

July 23, 2013 | Andrie de Vries

by Andrie de Vries Prior to joining Revolution Analytics in March this year, I spent several years in the field of market research and survey analytics. During this period, I spent a few months consulting to a digital marketing agency based in London. My role was to help build their ... [Read more...]
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