A big thank you to Databricks for working with us and sharing: rquery: Practical Big Data Transforms for R-Spark Users How to use rquery with Apache Spark on Databricks rquery on Databricks is a great data science tool.

This is code that will encompany an article that will appear in a special edition of a German IT magazine. The article is about explaining black-box machine learning models. In that article I’m showcasing three practical examples: Explaining supervised classification models built on tabular data using caret and the ...

tl;dr: we propose three calls to action: Share your curricular materials in the open. Participate in the rOpenSci Education profile series. Discuss with us how you want to be involved in rOpenSci Educators’ Collaborative. In previous posts in this series, we identified challenges that individual instructors typically face when ...

Hi Pawel, I’m glad you enjoyed it. I was trying to play around with facet_grid() earlier but I guess I didn’t stumble upon the proper parameters. Your suggestion works perfectly; not only does it keep each grid x-axis width proportional to its length, but it also keeps ...

Metaphors, which apply a concept from a source to a target, are a key component of how people construct ideas in their mind. We wanted to see if we could extract these ideas on a large scale and  build a taxonomy of conceptualizations around a single issue. We started with ...

It’s easy to animate graphs in R In this post am I going to show you how easy it is to animate figures in R thanks to the great ggplot2 extension gganimate written by Thomas Lin Pedersen and David Robinson This is something you might want to do to ...

There is interest in bitcoin at the moment because it is displaying signs of steady year to year growth with brief boosts followed by rapid declines. It is considered a risky investment by investors yet, has the potential for high returns in a fairly short duration (1-2 years). John McAfee, ...

The year 2017 has completely turned the film industry upside down. The allegations of harassment and sexual assault against Harvey Weinstein have raised the issue of sexism and misogyny in this industry to the eyes of the general public. In addition, it has helped raise awareness of the poor gender diversity ...

Introduction Visualization of partitions Multiple resample objects References Introduction In July mlr got a new feature that extended the support for spatial data: The ability to visualize spatial partitions in cross-validation (CV) 9d4f3. When one uses the resampling descriptions “SpCV” or “SpRepCV” in mlr, the k-means clustering approach after ...

Last month I attended my first ever R User Group meeting, which was held at the University of Portsmouth in their impressive Future Technology Centre. I’d been itching to go to one of these meetups for a while, but unfortunately there was nothing in the South of England, so ...

JSM 2018 is almost here! Usually around this time, I comb through the entire program manually making an itinerary for myself. But this year I decided to try something new – a programmatic way of going through the program, and then building a Shiny app that helps me better navigate the online ...