cpu+FPGA: applications can soon have bespoke instructions
By Derek Jones Compiler writers are always frustrated that the cpu they are currently targeting does not contain the one instruction that would enable them to generate really efficient code. If only it...
View ArticleIs your Classification Model making lucky guesses?
By Shaheen Gauher by Shaheen Gauher, PhD, Data Scientist at Microsoft At the heart of a classification model is the ability to assign a class to an object based on its description or features. When we...
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sample(): “Monkey’s Paw” style programming in R
By John Mount “The Monkey’s Paw” William Wymark Jacobs, 1902. Suppose we were given data in the following form: set.seed(2562) x <- 10*rnorm(5) print(x) # [1] -17.442331 7.361322 -10.537903...
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Keynotes announced for EARL 2016
By Angela Roberts We are pleased to announce our two keynote speakers this year at EARL (Effective Application of the R Language) Conference from 13th-15th September. The keynotes will be presenting on...
View ArticleIs your Classification Model making lucky guesses?
By Shaheen Gauher by Shaheen Gauher, PhD, Data Scientist at Microsoft At the heart of a classification model is the ability to assign a class to an object based on its description or features. When we...
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sample(): “Monkey’s Paw” style programming in R
By John Mount The R functions base::sample and base::sample.int are functions that include extra “conveniences” that seem to have no purpose beyond encouraging grave errors. In this note we will...
View ArticleRL10N: Let R Speak Your Language
By richierocks R has been translated into 20 languages but currently not many packages have translations. In a survey of CRAN done last December, of the 8274 packages on CRAN, only 50 had any installed...
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Lets Begin with something sample
By Walter Muruet The following R-exercises constitute the first set in a series of posts aimed to review fundamental probability and (bio)statistics concepts while learning to use R. Today we will...
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Upcoming Win-Vector LLC appearances
By John Mount Win-Vector LLC will be presenting on statistically validating models using R and data science at: Strata+Hadoop World “R Day” Tutorial 9:00am–5:00pm Tuesday, March 29 2016, San Jose,...
View ArticleR Consortium announces new grants for R projects and working groups
By David Smith Five months ago, the R Consortium asked the R Community to propose projects to benefit R users and the R project. Today, the R Consortium announced that it has awarded grants to fund...
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New RStudio add-in to schedule R scripts
By BNOSAC – Belgium Network of Open Source Analytical Consultants With the release of RStudio add-in possibilities, a new area of productivity increase and expected new features for R users has...
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How to: Weather Radials
By Joshua Kunst TLDR: Creating weather radials with highcharter andggplot2. I was surfing by the deep seas of the web and I found the Brice Pierre de la Briere‘sblocks and I saw the weather radials...
View ArticleSubmitting packages to CRAN
By Françoisn – [email protected] This note lists a few of the mistakes that one can make before submitting a package to CRAN. The list is based on my own mistakes when submitting the ggnetwork package...
View ArticleFor loops in R can lose class information
By John Mount Did you know R‘s for() loop control structure drops class annotations from vectors? Consider the following code R code demonstrating three uses of a for-loop that one would expect to...
View ArticleFor loops in R can lose class information
By John Mount Did you know R‘s for() loop control structure drops class annotations from arrays? Consider the following code R code demonstrating three uses of a for-loop that one would expect to...
View ArticleFinding NBA players with the most similar playing styles
By tlfvincent In this post, I leverage the SportVu data available for all NBA players active during the 2014-2015 season to not only infer players with the most similar playing styles, but also teams...
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googleformr asks – why R u open-source?
By Steve Simpson googleformr is a CRANpackage for collecting data programmatically via Google Forms. For collecting data online through user submissions, Google Forms can be a very convenient way to...
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Le Monde puzzle [#954]
By xi’an A square Le Monde mathematical puzzle: Given a triplet (a,b,c) of integers, with a? Can you find the triplet (a,b,c) that produces the sum a+b+c closest to 1000? This is a rather interesting...
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Graphics parameters exercises
By Matteo Renzi In the exercises below we practice how to personalize graphics parameters, how to produce different plots at the same time and how to save a plot in a file. We will use commands such as...
View ArticleGet ready for the New York R Conference
By Joseph Rickert by Joseph Rickert Last year, I wrote the New York R Conference “set the bar pretty darn high for a first time conference”. Not only was there an outstanding lineup of speakers, but...
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