March 2019

The Clash of the Titans in Test and ODI cricket

March 15, 2019 | Tinniam V Ganesh

Who looks outside, dreams; who looks inside, awakes. Show me a sane man and I will cure him for you. Carl Jung We’re made of star stuff. We are a way for the cosmos to know itself. If you want to make an apple pie from scratch, you must ...

[Read more...]

#20: Dependencies. Now with badges!

March 14, 2019 | Thinking inside the box

Welcome to post number twenty in the randomly redundant R rant series of posts, or R4 for short. It has been a little quiet since the previous post last June as we’ve been busy with other things but a few posts (or ideas at least) are queued. Depen...

[Read more...]

EARL London abstract submission deadline – 31 March

March 14, 2019 | Laura Swales

“EARL is a great Conference: it gives the opportunity of connecting with other companies that are using R for data analysis and getting inspired by their stories.” We have been delighted to already receive a host of interesting and brilliant abstracts for EARL London 2019, and there’s still time to ...

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How to select a seed for simulation or randomization

March 14, 2019 | Yossi Levy

If you need to generate a randomization list for a clinical trial, do some simulations or perhaps perform a huge bootstrap analysis, you need a way to draw random numbers. Putting many pieces of paper in a hat and drawing them is possible in theory, but you will probably be ... [Read more...]

Collecting Content Security Policy Violation Reports in S3 (‘Effortlessly’/’Freely’)

March 14, 2019 | hrbrmstr

In the previous post I tried to explain what Content Security Policies (CSPs) are and how to work with them in R. In case you didn’t RTFPost the TLDR is that CSPs give you control over what can be loaded along with your web content and can optionally be ... [Read more...]

Pi day quiz

March 14, 2019 | Yossi Levy

Today is the Pi Day – an annual celebration of the mathematical constant Pi. It is observed every year on March 14, since Pi can be approximated by 3.14, and the this date is written as 3/14 in the month/day format. To celebrate this day, here is a short quiz about Pi. You ...

[Read more...]

Simulating the Six Nations 2019 Rugby Tournament in R: Final Round Update

March 14, 2019 | stats_on_the_cloud

In an earlier post I blogged how I had made a Monte Carlo simulation model of the Six Nations Rugby Tournament. With the final round of the tournament approaching this Saturday, I decided to do a quick update. Who can win at this stage? Wales, England, or Ireland can still ... [Read more...]

Create interactive ggplot2 graphs with plotly

March 13, 2019 | Laura Ellis

A tutorial showing how to create interactive ggplot2 graphs in R with the ploty package. [Read more...]

On the poor performance of classifiers in insurance models

March 13, 2019 | arthur charpentier

Each time we have a case study in my actuarial courses (with real data), students are surprised to have hard time getting a “good” model, and they are always surprised to have a low AUC, when trying to model the probability to claim a loss, to die, to fraud, etc. ...

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Visually explore Probability Distributions with vistributions

March 13, 2019 | Rsquared Academy Blog - Explore Discover Learn

We are happy to introduce the vistributions package, a set of tools for visually exploring probability distributions. Installation

# Install release version from CRAN
install.packages("vistributions")

# Install development version from GitHub
# install.packages("devtools")
devtools::install_github("rsquaredacademy/vistributions")

Shiny App vistributions includes a shiny app which can be launched using

vdist_launch_app()

or try the live version here. Read on to learn more about the features of vistributions, or see ...

[Read more...]

Zotero hacks: unlimited synced storage and its smooth use with rmarkdown

March 13, 2019 | Ilya Kashnitsky

Here is a bit refreshed translation of my 2015 blog post, initially published on Russian blog platform habr.com. The post shows how to organize a personal academic library of unlimited size for free. This is a funny case of a self written manual which I came back to multiple times ...

[Read more...]

Visually explore Probability Distributions with vistributions

March 13, 2019 | Rsquared Academy Blog

We are happy to introduce the vistributions package, a set of tools for visually exploring probability distributions. Installation

# Install release version from CRAN
install.packages("vistributions")

# Install development version from GitHub
# install.packages("devtools")
devtools::install_github("rsquaredacademy/vistributions")

Shiny App vistributions includes a shiny app which can be launched using

vdist_launch_app()

or try the live version here. Read on to learn more about the features of vistributions, or see ...

[Read more...]

Parsnipping Fama French

March 13, 2019 | R Views

Today, we will continue our exploration of developments in the world of tidy models, and we will stick with our usual Fama French modeling flow to do so. For new readers who want get familiar with Fama French before diving into this post, see here where we covered importing and ...

[Read more...]

Mixing Up Your Office March Madness Competition

March 13, 2019 | Programming on nielsenmark.us

March Madness is almost here! Try mixing up your office bracket competition with a Calcutta auction instead. I think the original source of this idea came from a news article similar to this one. Of course, you can also make this (mostly) risk free by using points to bid on ...

[Read more...]

Unit Tests in R

March 13, 2019 | John Mount

I am collecting here some notes on testing in R. There seems to be a general (false) impression among non R-core developers that to run tests, R package developers need a test management system such as RUnit or testthat. And a further false impression that testthat is the only R ... [Read more...]

Unpacking immigration collocations

March 13, 2019 | Marcin Kosiński

As part of our road to detecting metaphors we got stuck on a simple problem: compound nouns. If you take the sentence: series of immigration policy changes Series modifies changes in reference to immigration policy, which is a compound noun. “Series of changes” is not what we would consider metaphorical ...

[Read more...]

Speed Test: Sapply vs. Vectorization

March 13, 2019 | Andrew Treadway

The apply functions in R are awesome (see this post for some lesser known apply functions). However, if you can use pure vectorization, then you’ll probably end up making your code run a lot faster than just depending upon functions like sapply and lapply. This is because apply functions ...

[Read more...]

LondonR – March edition round up

March 13, 2019 | Jack Talboys

My first LondonR took me back to my days at University as UCL hosted us for the evening. Our first speaker of the night was Mike Smith from Pfizer. Mike had joined us to give a version of his talk that he delivered at this years rstudio::conf – ‘lazy and ... [Read more...]

An Interesting Subtlety of Statistics: The Hot Hand Fallacy Fallacy

March 13, 2019 | Economics and R - R posts

Last week I stumbled across a very interesting recent Econometrica article by Joshua Miller and Adam Sanjuro. I was really surprised by the statistical result they discovered and guess the issue may even have fooled Nobel Prize winning behavioral economists. Before showing the statistical subtlety, let me briefly explain the ... [Read more...]

Generalized circles and inversions

March 12, 2019 | Stéphane Laurent

Let \(\iota_0\) be the inversion with respect to the unit circle: \[ \iota_0(z) = \frac{1}{\bar{z}}, \quad z \neq 0. \] Consider a generalized circle \(\mathcal{G}\mathcal{C}... [Read more...]

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March 2019

The Clash of the Titans in Test and ODI cricket

#20: Dependencies. Now with badges!

EARL London abstract submission deadline – 31 March

How to select a seed for simulation or randomization

Collecting Content Security Policy Violation Reports in S3 (‘Effortlessly’/’Freely’)

Pi day quiz

Simulating the Six Nations 2019 Rugby Tournament in R: Final Round Update

Create interactive ggplot2 graphs with plotly

On the poor performance of classifiers in insurance models

Visually explore Probability Distributions with vistributions

Zotero hacks: unlimited synced storage and its smooth use with rmarkdown

Visually explore Probability Distributions with vistributions

Parsnipping Fama French

Mixing Up Your Office March Madness Competition

Unit Tests in R

Unpacking immigration collocations

Speed Test: Sapply vs. Vectorization

LondonR – March edition round up

An Interesting Subtlety of Statistics: The Hot Hand Fallacy Fallacy

Generalized circles and inversions

March 2019

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