RTutor: Driving Electric or Gasoline Cars? Comparing the Pollution Damages

November 21, 2018
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RTutor: Driving Electric or Gasoline Cars? Comparing the Pollution Damages

How does driving an electric car compare to driving a similar gasoline car in terms of total pollution damages? While some comments about the future of mobility may suggest that electric cars are already clearly much more environmental friendly, the an...

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Scrapping data about Australian politicians with RSelenium

November 21, 2018
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Scrapping data about Australian politicians with RSelenium

While there is more and more data available in structured formats (CSV, JSON) through initiatives like OpenData, sometimes nicely formatted data still not publicly available. When I decided to...

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R > Python: a Concrete Example

November 20, 2018
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R > Python: a Concrete Example

I like both Python and R, and teach them both, but for data science R is the clear choice. When asked why, I always note (a) written by statisticians...

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An Overview of the Singapore Hiring Landscape

November 20, 2018
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An Overview of the Singapore Hiring Landscape

The idea of having a 360 degree view of the entire job seeking and matching landscape has always been a dream of any labour economist. Just imagine, a dataset...

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The best way to visit Luxembourguish castles is doing data science + combinatorial optimization

November 20, 2018
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The best way to visit Luxembourguish castles is doing data science + combinatorial optimization

Inspired by David Schoch’s blog post, Traveling Beerdrinker Problem. Check out his blog, he has some amazing posts! Introduction Luxembourg, as any proper European country, is full of castles. According to Wikipedia, “By some...

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Slides from my talks about Demystifying Big Data and Deep Learning (and how to get started)

November 19, 2018
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On November 7th, Uwe Friedrichsen and I gave our talk from the JAX conference 2018: Deep Learning - a Primer again at the W-JAX in Munich. A few weeks before,...

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Generating data to explore the myriad causal effects that can be estimated in observational data analysis

November 19, 2018
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Generating data to explore the myriad causal effects that can be estimated in observational data analysis

I’ve been inspired by two recent talks describing the challenges of using instrumental variable (IV) methods. IV methods are used to estimate the causal effects of an exposure or...

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Checklist Recipe – How we created a template to standardize species data

Imagine you are a fish ecologist who compiled a list of fish species for your country. 🐟 Your list could be useful to others, so you publish it as a...

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Zero Counts in dplyr

November 19, 2018
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Zero Counts in dplyr

Here’s a feature of dplyr that occasionally bites me (most recently while making these graphs). It’s about to change mostly for the better, but is also likely to bite...

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Cognitive Services in Containers

November 19, 2018
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I've posted several examples here of using Azure Cognitive Services for data science applications. You can upload an an image or video to the service and extract information about...

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Change over time is not “treatment response”

November 19, 2018
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Change over time is not “treatment response”

This will be a non-technical post illustrating the problems with identifying treatment responders or non-responders using inappropriate within-group analyses. Specifically, I will show why it is pointless to...

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The Distribution of Time Between Recessions: Revisited (with MCHT)

November 19, 2018
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The Distribution of Time Between Recessions: Revisited (with MCHT)

Introduction These past few weeks I’ve been writing about a new package I created, MCHT. Those blog posts were basically tutorials demonstrating how to use the package. (Read the...

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Hacking Bioconductor

November 19, 2018
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Hacking Bioconductor

Introduction Domain squatting or URL hijacking is a straightforward attack that requires little skill. An attacker registers a domain that is similar to the target domain and hopes that...

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Flowers for Julia

November 19, 2018
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Flowers for Julia

No hables de futuro, es una ilusión cuando el Rock & Roll conquistó mi corazón (El Rompeolas, Loquillo y los Trogloditas) In this post I create flowers inspired in...

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Tweeting wikidata info

November 18, 2018
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Tweeting wikidata info

In this explainer I walk you through the steps I took to create a twitter bot that tweets daily about people who died on that date. I created a script that...

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Many Factor Models

November 18, 2018
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Many Factor Models

Today, we will return to the Fama French (FF) model of asset returns and use it as a proxy for fitting and evaluating multiple linear models. In a previous...

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RStudio 1.2 Preview: The Little Things

November 18, 2018
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RStudio 1.2 Preview: The Little Things

Today, we’re continuing our blog series on new features in RStudio 1.2. If you’d like to try these features out for yourself, you can download a preview release of...

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Using OSX? Compiling an R package from source? Issues with ‘-fopenmp’? Try this.

November 18, 2018
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You can file this one under “I may have the very specific solution if you’re having exactly the same problem.” So: if you’re running some R code and you...

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RcppMsgPack 0.2.3

November 18, 2018
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Another maintenance release of RcppMsgPack got onto CRAN today. Two new helper functions were added and not unlike the previous 0.2.2 release in, some additional changes are internal...

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Statistics Sunday: Reading and Creating a Data Frame with Multiple Text Files

November 18, 2018
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Statistics Sunday: Reading and Creating a Data Frame with Multiple Text Files

First Statistics Sunday in far too long! It's going to be a short one, but it describes a great trick I learned recently while completing a time study for...

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Growing List vs Growing Queue

November 17, 2018
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### GROWING LIST ### base_lst1

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epubr 0.5.0 CRAN release

November 17, 2018
By

The epubr package provides functions supporting the reading and parsing of internal e-book content from EPUB files. This post briefly highlights the changes from v0.4.0. See the vignette for...

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Benford’s Law for Fraud Detection with an Application to all Brazilian Presidential Elections from 2002 to 2018

November 17, 2018
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Benford’s Law for Fraud Detection with an Application to all Brazilian Presidential Elections from 2002 to 2018

By Gabriel Vasconcelos and Yuri Fonseca The intuition Let us begin with a brief explanation about Benford’s law and why should it work as a fraud detector method. Given...

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Tis the Season to Check your SSL/TLS Cipher List Thrice (RCurl/curl/openssl)

November 17, 2018
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Tis the Season to Check your SSL/TLS Cipher List Thrice (RCurl/curl/openssl)

The libcurl library (the foundational library behind the RCurl and curl packages) has switched to using OpenSSL’s default ciphers since version 7.56.0 (October 4 2017). If you’re a regular...

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Congress Over Time

November 17, 2018
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Congress Over Time

Since the U.S. midterm elections I’ve been playing around with some Congressional Quarterly data about the composition of the House and Senate since 1945. Unfortunately I’m not allowed to...

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Create easy automated dashbords with R and Markdown

November 17, 2018
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Create easy automated dashbords with R and Markdown

CategoriesProgramming Tags R Markdown R Programming Tips & Tricks In this article, you learn how to make a visualization dashboard in R. First you need to install the `rmarkdown` package into your R library....

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A more systematic look at suppressed data by @ellis2013nz

November 17, 2018
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A more systematic look at suppressed data by @ellis2013nz

Last week I blogged about some different ways of dealing with data in a cross tab that has been suppressed as a means of disclosure control, when the count...

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Convert Data Frame to Dictionary List in R

November 16, 2018
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In R, there are a couple ways to convert the column-oriented data frame to a row-oriented dictionary list or alike, e.g. a list of lists. In the code snippet...

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RcppGetconf 0.0.3

November 16, 2018
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A second and minor update for the RcppGetconf package for reading system configuration — not unlike getconf from the libc library — is now on CRAN. Changes are minor....

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