# Category: R News

## Classification of historical newspapers content: a tutorial combining R, bash and Vowpal Wabbit, part 2

In part 1 of this series I set up Vowpal Wabbit to classify newspapers content. Now, let’s use the model to make predictions and see how and if we can...continue reading.

## Convert between citations formats with R

rOpenSci has recently released a package that should be very handy for people that work with multiple citation managers (e.g. Endnote and a BibTex based manager like JabRef). Here’s the...continue reading.

## Building Big Shiny Apps — A Workflow 2/2

Second part of the blog transcription of the talk I’ve given during the eposter session of the rstudio::conf(2019). Read the first part here. Building Big Shiny Apps: step by step...continue reading.

## Using parameters in Rmarkdown

Nothing new or original here, just something that I learned about quite recently that may be useful for others. One of my more “popular” code repositories, judging by Twitter, is...continue reading.

## 2019-01 A Geometry Engine Interface for ‘grid’

This report describes a new function in ‘grid’ called grobCoords and a new package called ‘gridGeometry’ that combines grobCoords with the ‘polyclip’ package to provide …continue reading.

## Polished human cognitive characteristics chapter

It has been just over two years since I release the first draft of the Human cognitive characteristics chapter of my evidence-based software engineering book. As new material was discovered,...continue reading.

## R Weekly 2019-09 Lego, group_split

Hello and welcome to this new issue! Release Date: 2018-03-04 rstudio::conf 2019 Workshop materials now available Let’s get Lego’d! A wee look at group_map and group_split in dplyr How to...continue reading.

## CRAN Mirror “Security”

In the “Changes on CRAN” section of the latest version of the The R Journal (Vol. 10/2, December 2018) had this short blurb entitled “CRAN mirror security”: Currently, there are...continue reading.

## Est-ce que cette piscine est bien notée ?

J’ai pris la (mauvaise ?) habitude d’utiliser Google Maps et son système de notation (chaque utilisateur peut accorder une note de une à cinq étoiles) pour décider d’où je me...continue reading.

## ETL – Building a Data Pipeline With Python – Introduction – Part 1 of N

ETL (Extract, Transform, Load) is not always the favorite part of a data scientist’s job but it’s an absolute necessity in the real world. If you don’t understand this process,...continue reading.

## Classification of historical newspapers content: a tutorial combining R, bash and Vowpal Wabbit

Can I get enough of historical newspapers data? Seems like I don’t. I already wrote four (1, 2, 3 and 4) blog posts, but there’s still a lot to explore....continue reading.

## Efficient MCMC with Caching

This post is part of a running series on Bayesian MCMC tutorials. For updates, follow @StableMarkets. Metropolis Review Metropolis-Hastings is an MCMC algorithm for drawing samples from a distribution known up to...continue reading.

## rquery Substitution

The rquery R package has several places where the user can ask for what they have typed in to be substituted for a name or value stored in a variable....continue reading.

## An architecture for real-time scoring with R

Let’s say you’ve developed a predictive model in R, and you want to embed predictions (scores) from that model into another application (like a mobile or Web app, or some...continue reading.

## Binning Data in a Database

Roz King just wrote an interesting article on binning data (a common data analytics step) in a database. He compares a case-based approach (where the bin divisions are stuffed into...continue reading.

## Some R Packages for ROC Curves

In a recent post, I presented some of the theory underlying ROC curves, and outlined the history leading up to their present popularity for characterizing the performance of machine learning...continue reading.

## htmlunitjars Updated to 2.34.0

The in-dev htmlunit package for javascript-“enabled” web-scraping without the need for Selenium, Splash or headless Chrome relies on the HtmlUnit library and said library just released version 2.34.0 with a...continue reading.

## EARL London early bird tickets now on sale

Early bird tickets for the Enterprise Applications of the R Language Conference are now on sale! The EARL Conference is in its sixth year, its a cross-sector conference that focuses...continue reading.

## drat All The 📦! : Enabling Easier Package Discovery and Installation with Your Own CRAN-like Repo for Your Packages

I’ve got a work-in-progress drat-ified CRAN-like repo for (eventually) all my packages over at CINC🔗 (“CINC is not CRAN” and it also sounds like “sync”). This is in parallel with...continue reading.