Twitter coverage of the useR! 2019 conference

July 15, 2019
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Twitter coverage of the useR! 2019 conference

Very briefly: Last week was useR! conference time again, coming to you this time from Toulouse, France I’ve retrieved 8 318 tweets that mention #user2019 and run them through my report generator And here are the results Take-home message this year: the R Ladies rock!

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Looking at flood insurance claims with choroplethr

July 14, 2019
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Looking at flood insurance claims with choroplethr

I recently learned how to use the choroplethr package through a short tutorial by the package author Ari Lamstein (youtube link here). To cement what I learned, I thought...

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Recreating ‘Unknown Pleasures’ graphic

July 14, 2019
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Recreating ‘Unknown Pleasures’ graphic

For some time I’ve wanted to recreate the cover art from Joy Division’s Unknown Pleasures album. The visualisation depicts successive pulses from the pulsar PSR B1919+21, discovered by Jocelyn...

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Distribution of Headline Sentiment

July 14, 2019
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Distribution of Headline Sentiment

My web scraping project explored the distribution of headline sentiment by news source. To do this, I scraped the Nasdaq latest market headlines page and applied sentiment analysis to...

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Yet Another R Package for General Regression Neural Network

July 14, 2019
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Compared with other types of neural networks, General Regression Neural Network (Specht, 1991) is advantageous in several aspects. Being an universal approximation function, GRNN has only one tuning parameter...

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Forecast Combination in R – slides

July 14, 2019
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Forecast Combination in R – slides

The useR! 2019 held in Toulouse ended couple of days ago. I spoke of the recent R journal publication about forecast combinations (joint work with Christoph Weiss and Gernot...

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Some Details on Running xgboost

July 14, 2019
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While reading Dr. Nina Zumel’s excellent note on bias in common ensemble methods, I ran the examples to see the effects she described (and I think it is very important...

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Back from useR! 2019

July 13, 2019
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I’m back from useR! 2019!, Toulouse, where I gave one talk and a workshop. Here are the links to the materials. 2019-07-08 Contributing to the R ecosystem useR! newbie session A short...

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Simulating Data in R: Examples in Writing Modular Code

July 13, 2019
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Simulating Data in R: Examples in Writing Modular Code

Simulating data is an invaluable tool. I use simulations to conduct power analyses, probe how robust methods are to violating assumptions, and examine how different methods handle different types...

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Quick Hit: {waffle} 1.0 Font Awesome 5 Pictograms and More

July 12, 2019
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Quick Hit: {waffle} 1.0 Font Awesome 5 Pictograms and More

The {waffle} package got some 💙 this week and now has a substantially improved geom_waffle() along with a brand new sibling function geom_pictogram() which has all the powerful new...

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useR! 2019 Slides on Futures

July 12, 2019
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useR! 2019 Slides on Futures

Below are the slides for my Future: Simple Parallel and Distributed Processing in R that I presented at the useR! 2019 conference in Toulouse, France on July 9-12, 2019. My...

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Testing the Collatz Conjecture with R

July 12, 2019
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Testing the Collatz Conjecture with R

Background The Collatz Conjecture is a famous unsolved problem in number theory. If you’re not familiar with it – the conjecture is very simple to understand, yet, no one...

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Cricketr learns new tricks : Performs fine-grained analysis of players

July 12, 2019
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Cricketr learns new tricks : Performs fine-grained analysis of players

“He felt that his whole life was some kind of dream and he sometimes wondered whose it was and whether they were enjoying it.” “The ships hung in the...

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Numerical integration over an infinite interval in Rcpp (part 2)

July 11, 2019
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In a previous post I have shown that without intervention RcppNumerical does not handle integration over infinite ranges. In this post I want to generalize the method to integrals...

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a non-riddle

July 11, 2019
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Unless I missed a point in the last riddle from the Riddler, there is very little to say about it: Given N ocre balls, N aquamarine balls, and two...

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Common Ensemble Models can be Biased

July 11, 2019
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Common Ensemble Models can be Biased

In our previous article , we showed that generalized linear models are unbiased, or calibrated: they preserve the conditional expectations and rollups of the training data. A calibrated model...

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useR!2019 in Toulouse, France

July 11, 2019
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Salut mes amis! Today I’ve presented my package at the useR!2019 conference in Toulouse, France. This is a nice conference, focused on specific solutions to specific problems. Here,...

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A Twitter network of members of the 19th German Bundestag – part II

July 11, 2019
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A Twitter network of members of the 19th German Bundestag – part II

This is the second part about my project that deals with the Twitter network of members of the Bundestag. After … Read More →

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A Twitter network of members of the 19th German Bundestag – part I

July 11, 2019
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A Twitter network of members of the 19th German Bundestag – part I

For the R tutorial that I gave at the WZB in the previous semester, I gave an introduction on how … Read More →

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Community Call – Reproducible Research with R

Community Call – Reproducible Research with R

Our 1-hour Call on Reproducible Research with R will include three speakers and...

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Pairwise Bayesian Comparisons – even faster

Pairwise Bayesian Comparisons – even faster

This post builds upon two earlier posts: Comparing Frequentist, Bayesian and Simulation methods and conclusions More Bayes and multiple comparisons Background This all started with a nice post from Anindya Mozumdar on the R Bloggers...

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My 2 cents on the “R vs Python” squabble

July 10, 2019
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My 2 cents on the “R vs Python” squabble

Intro In this post I’ll make an exception and instead of sharing my research I’ll chime in on the never ending “R vs Python” squabble. The tl;dr version is: R is superior...

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Rmd first: When development starts with documentation

July 10, 2019
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Rmd first: When development starts with documentation

Documentation matters ! Think about future you and others. Whatever is the aim of your script and analyses, you should think about documentation. The way I see it, R...

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EARLy bird ticket sales end 31 July

July 10, 2019
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EARL London 2019 is getting closer! We’ve got a great line up of speakers from a huge range of industries and three fantastic keynote speakers – Helen Hunter –...

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Bang Bang – How to program with dplyr

July 10, 2019
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Bang Bang – How to program with dplyr

Never heard of non-standard evaluation? Then our colleague Markus has the perfect answer for you: Bang Bang! In this blog post, Markus introduces meta-programming when using dplyr. Der Beitrag Bang...

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R 3.6.1 is now available

July 10, 2019
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On July 5, the R Core Group released the source code for the latest update to R, R 3.6.1, and binaries are now available to download for Windows, Linux...

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CRAN does not validate R packages!

July 9, 2019
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CRAN does not validate R packages!

A friend called me the other day for advice on how to submit an R package to CRAN along with a proof his method was mathematically sound. I replied...

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Stress Testing Dynamic R/exams Exercises

July 9, 2019
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Stress Testing Dynamic R/exams Exercises

Before actually using a dynamic exercise in a course it should be thoroughly tested. While certain aspects require critical reading by a human, other aspects can be automatically stress-tested...

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How to Use R in AWS Lambda

July 9, 2019
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How to Use R in AWS Lambda

How to use R in AWS Lambda With AWS Lambda, small and frequent jobs can be done without setting up an instance and keeping it “alive” waiting for requests The...

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