January 2018

Introducing Maëlle Salmon, rOpenSci’s new Research Software Engineer

January 28, 2018 | rOpenSci - open tools for open science

We’re very pleased to be introducing someone who needs no introduction in the R community. Join us in welcoming Maëlle Salmon to rOpenSci as a Research Software Engineer (part time, working from Nancy, France). We’d like to formally introduce her here and share a bit about the ...

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Year 2 of Locke Data

January 28, 2018 | R on Locke Data Blog

Hey folks, I wanted to give y’all an update about Locke Data one year on from when I started it up. In the past year, I’ve delivered more than 32 days of training, wrote and published 2 books, worked with 3 clients, and generally whimpered at my schedule. It has been ... [Read more...]

Moving parts of a country over a map

January 28, 2018 | Roel M. Hogervorst

I love making maps, I also love making gifs. In this short post I make an animated gif of parts of a map moving. In this case the parts of the map only move in the xy direction, but you can also turn them, and make them bigger or smaller. ... [Read more...]

Exploring Embeddings for Categorical Variables with Keras

January 28, 2018 | Florian Teschner

In order to stay up to date, I try to follow Jeremy Howard on a regular basis. In one of his recent videos, he shows how to use embeddings for categorical variables (e.g. weekdays). First off; what are embeddings? An embedding is a mapping of a catego... [Read more...]

GLMM trees published in BRM

January 28, 2018 | Achim Zeileis

Generalized linear mixed-effects model trees, especially for detecting treatment-subgroup interactions in clustered data. Accompanied by the R package glmertree, combining partykit::glmtree and lme4::glmer. Citation Marjolein F...

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Type I error rates in two-sample t-test by simulation

January 28, 2018 | Andrew Z

What do you do when analyzing data is fun, but you don't have any new data? You make it up. This simulation tests the type I error rates of two-sample t-test in R and SAS. It demonstrates efficient methods for simulation, and it reminders the reader not to take the ...

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digest 0.6.15

January 28, 2018 | Thinking inside the box

And yet another small maintenance release, now at version 0.6.15, of the digest package arrived on CRAN and in Debian today. digest creates hash digests of arbitrary R objects (using the 'md5', 'sha-1', 'sha-256', 'sha-512', 'crc32', 'xxhash32', 'xxh... [Read more...]

RVowpalWabbit 0.0.11

January 28, 2018 | Thinking inside the box

Another boring little RVowpalWabbit package update to version 0.0.11 came in response to another CRAN request: We were writing temporary output (a cache file for the fit/prediction, to be precise) to a non-temporary directory, which is now being caug... [Read more...]

Log shiny app visitors and R usage to Google Analytics

January 28, 2018 | Super User

If you work on applications for clients or have open sourced some shiny apps, a question that arises is how is your application being used. What you can do in order to find out how your hard work is being consumed is putting your code in logs and then ... [Read more...]

Does "the twitter ratio" apply to the #rstats community?

January 28, 2018 | Daniela Vazquez

Not long ago I came across a FiveThirtyEight post called “The Worst Tweeter In Politics Isn’t Trump”. Well, it was a long time ago actually, but this project was laying in my computer for a while ¯\(ツ)/¯. They gathered some resources from the media discussing that tweets leading to more ...

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R or Python? Python or R? The ongoing debate.

January 28, 2018 | tomaztsql

On every SQL community event, where there could be a cluster of sessions dedicated to BI or analytics, I would have people asking me, “which one would you recommend?” or “which one I prefer?” So, questions about recommendation and preferences are in my opinion the hardest one. And not that ...

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Modeling LGD with Proportional Odds Model

January 28, 2018 | statcompute

The LGD model is an important component in the expected loss calculation. In https://statcompute.wordpress.com/2015/11/01/quasi-binomial-model-in-sas, I discussed how to model LGD with the quasi-binomial regression that is simple and makes no distributional assumption. In the real-world LGD data, we usually would observe 3 ordered categories of values, including 0, 1, ... [Read more...]

Have you ever asked yourself, “how should I approach the classic pre-post analysis?”

January 27, 2018 | Keith Goldfeld

Well, maybe not, but this comes up all the time. An investigator wants to assess the effect of an intervention on a outcome. Study participants are randomized either to receive the intervention (could be a new drug, new protocol, behavioral intervention, whatever) or treatment as usual. For each participant, the ...

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Sketchnotes from TWiML&AI #94: Neuroevolution: Evolving Novel Neural Network Architectures with Kenneth Stanley

January 27, 2018 | Dr. Shirin Glander

These are my sketchnotes for Sam Charrington’s podcast This Week in Machine Learning and AI about Neuroevolution: Evolving Novel Neural Network Architectures with Kenneth Stanley: Sketchnotes from TWiMLAI talk #94: Neuroevolution: Evolving Novel Ne...

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Welcome to the redesigned web page

January 27, 2018 | Achim Zeileis

Redesigned the personal web page using a responsive jekyll design with a fresh theme and better-structured content. New web page After half a decade the web page received a reboot with a new theme as well as more and better-str... [Read more...]

Supercharge your R code with wrapr

January 27, 2018 | John Mount

I would like to demonstrate some helpful wrapr R notation tools that really neaten up your R code. Img: Christopher Ziemnowicz. Named Map Builder First I will demonstrate wrapr‘s "named map builder": :=. The named map builder adds names to vectors and lists by nice "names on the left and ...

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Is your hometown named after Lincoln or Washington?

January 26, 2018 | R & Census

Washington and Lincoln are the two greatest presidents in the history of the United States. This post, however, does not discuss how great they are. Instead, I want to show a fun fact related the two presidents: how many cities and towns (and equivalents) are named after them. I am ... [Read more...]

Setting up a Scalable RStudio Instance in AWS

January 26, 2018 | R on Sastibe's Data Science Blog

Assume you want to start to write R code (a very good decision, in my opinion) and you want to be able to write and test code whereever you are. Wouldn’t it be awesome if one could set up an environment that can be used for R coding independent ...

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R Function for Simulating Gaussian Processes

January 26, 2018 | ntguardian

I wrote a quick function for simulating a Gaussian process given only its kernel function and used it to simulate processes with different kernels and very different properties.

$K(s, t) = e^{-(s - t)^2}$

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The Friday #rstats PuzzleR : 2018-01-26

January 26, 2018 | hrbrmstr

Time for another look at what’s new and interesting in the #rstats world with the help of Peter Meissner’s (@marvin_dpr) crossword.r?. The answers to last week’s puzzle have been posted (it seemed to make more sense posting the answers a week later vs the Monday ...

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R-bloggers

R news and tutorials contributed by hundreds of R bloggers

January 2018

Introducing Maëlle Salmon, rOpenSci’s new Research Software Engineer

Year 2 of Locke Data

Moving parts of a country over a map

Exploring Embeddings for Categorical Variables with Keras

GLMM trees published in BRM

Type I error rates in two-sample t-test by simulation

digest 0.6.15

RVowpalWabbit 0.0.11

Log shiny app visitors and R usage to Google Analytics

Does "the twitter ratio" apply to the #rstats community?

R or Python? Python or R? The ongoing debate.

Modeling LGD with Proportional Odds Model

Have you ever asked yourself, “how should I approach the classic pre-post analysis?”

Sketchnotes from TWiML&AI #94: Neuroevolution: Evolving Novel Neural Network Architectures with Kenneth Stanley

Welcome to the redesigned web page

Supercharge your R code with wrapr

Is your hometown named after Lincoln or Washington?

Setting up a Scalable RStudio Instance in AWS

R Function for Simulating Gaussian Processes

The Friday #rstats PuzzleR : 2018-01-26

January 2018

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