another riddle
By xi’an A very nice puzzle on The Riddler last week that kept me busy on train and plane rides, runs and even in between over the weekend. The core of the puzzle is about finding the optimal procedure...
View ArticleAbout those weird things in R…
By David Smith There’s no denying that for a language as popular as R, it has more than its fair share of quirks. If you’ve ever wondered why, for example, R has a non-standard assignment operator, or...
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RStudio at the Open Data Science Conference
By Roger Oberg If you’re a data wrangler or data scientist, ODSC East in Boston from May 20-22 is a wonderful opportunity to get up-to-date on the latest open source tools and trends. R and RStudio...
View ArticleAnnouncing the R Election Analysis Contest
By Ari Lamstein Today I am happy to announce the R Election Analysis Contest. The goal of the contest is to encourage and promote high quality reproducible research in R that focuses on elections. The...
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Election tRends: An interactive US election tracker (using Shiny and Plotly)
By Tal Galili Guest post by Jonathan Sidi Introduction The US primaries are coming on fast with almost 120 days left until the conventions. After building a shinyapp for the Israeli Elections I decided...
View ArticleFeather: A Fast On-Disk Format for Data Frames for R and Python, powered by...
By hadleywickham Wes McKinney, Software Engineer, ClouderaHadley Wickham, Chief Scientist, RStudio This past January, we (Hadley and Wes) met and discussed some of the systems challenges facing the...
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Feather: A Fast On-Disk Format for Data Frames for R and Python, powered by...
By hadleywickham Wes McKinney, Software Engineer, ClouderaHadley Wickham, Chief Scientist, RStudio This past January, we (Hadley and Wes) met and discussed some of the systems challenges facing the...
View ArticleLearning from Learning Curves
By Joseph Rickert by Bob Horton, Senior Data Scientist, Microsoft This is a follow-up to my earlier post on learning curves. A learning curve is a plot of predictive error for training and validation...
View ArticleLearning from Learning Curves
By Joseph Rickert This is a follow-up to my earlier post on learning curves. A learning curve is a plot of predictive error for training and validation sets over a range of training set sizes. Here...
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Easier Composite U.S. Choropleths with albersusa
By hrbrmstr Folks who’ve been tracking this blog on R-bloggers probably remember this post where I showed how to create a composite U.S. map with an Albers projection (which is commonly referred to as...
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How to fit a copula model in R [heavily revised]. Part 2: fitting the copula
By Mic Here I am again with part 2. If you would like to read part 1 of this short tutorial on copulas, please click here. In this second post I am going to select a copula model, fit it to a test...
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Dealing with non-proportional hazards in R
By Max Gordon As things change over time so should our statistical models. The image is CC by Prad Prathivi Since I’m frequently working with large datasets and survival data I often find that the...
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european R users meeting (eRum) 2016 – Call for Workshops deadline (by 15th...
By Tal Galili deadline: 15th of April Info about the conference: eRum 2016 will take place in the beautiful city of Poznań, Poland, betweenOctober 12th and 14th, and we already have confirmed invited...
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Good news from Belgium: Course on Applied spatial modelling with R (April 13-14)
By BNOSAC – Belgium Network of Open Source Analytical Consultants Within 2 weeks, our 2-day crash course on Applied spatial modelling with R (April 13-14, 2016) will be given at the University of...
View ArticleJupyter Notebooks with R in Azure Machine Learning Studio
By Andrie de Vries by Andrie de Vries Earlier today Microsoft announced that Jupyter Notebooks are now available with the R Kernel as a service in Azure Machine Learning (ML) Studio. I wrote about...
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Jupyter Notebooks with R in Azure Machine Learning Studio
By Andrie de Vries by Andrie de Vries Earlier today Microsoft announced that Jupyter Notebooks are now available with the R Kernel as a service in Azure Machine Learning (ML) Studio. I wrote about...
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An awesome RStudio addin for selecting colours, and another for adding...
By Dean Attali’s R Blog TL;DR: There’s a colour picker addin in shinyjs and a ggplot2 marginal plots addin in ggExtra. Any R user who hasn’t been spending the past 2 months under a rock should know by...
View ArticleHow to check Likert scale summaries for plausibility
By Richard Morey Suppose you are reading a paper that uses Likert scale responses. The paper reports the mean, standard deviation, and number of responses. If we are — for some reason — suspicious of a...
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GTC 2016
By matloff I will be an invited speaker at GTC 2016, a large conference on GPU computation. The main topic will be usage of GPU in conjunction with R, and I will also speak on my Software Alchemy...
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Updated R & BLAS Timings
By Avraham With the recent releases of R 3.2.4 and OpenBLAS 2.17, I decided it was time to re-benchmark R speed. I’ve settled on a particular set of tests, based on my experience as well as some of...
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