I’ve taken another look at the {hagr} data, which I wrote about previously. This time I’m focusing on the hierarchy of creatures. Taxonomic Rank The Linnaean Taxonomy is a hierarchical classification system for organisms devised by Carl Linnaeus. ...

Our mission at NPL Markets is to enable smart decision-making through innovative trading technology, advanced data analytics and a new comprehensive trading ecosystem. We focus specifically on the illiquid asset market, a market that is partially characterized by its unstructured data.   NPL Markets fully embraces R and Shiny to create ...

There is so much to learn in the world of R. One thing that I want to learn more about is working with time series data. I’ve read a lot about the tidyquant package and its uses with time series data so that was top of my list to ...

The last post showed how to work with the macOS mdls command line XML output, but with {swiftr} we can avoid the command line round trip by bridging the low-level Spotlight API (which mdls uses) directly in R via Swift. If you’ve already played with {swiftr} before but were ...

Happy spring from the R Markdown family! We are excited to share a few package updates that have been keeping us busy so far this year. 1. rmarkdown Latest release We are proud to share that rmarkdown (https://pkgs.rstudio.com/rmarkdown/) version 2.7 is on CRAN. rmarkdown is a package that ...

In a previous post I created a cool-looking (in my opinion) heatmap of my Marathon training from years back. One of the downsides to that density-based method of making the heat map was that routes I only ran once didn’t show up very clearly. I also wanted to know ...

Dr. Rama Ramakrishnan is Professor of the Practice at MIT Sloan School of Management where he teaches courses in Data Science, Optimization and applied Machine Learning. When starting to work with a new dataset, it is useful to quickly pinpoint which pairs of variables appear to be strongly related. It ...

My friends and co-authors from Montpellier have released last month the third version of the DIYABC software, DIYABC-RF, which includes and promotes the use of random forests for parameter inference and model selection, in connection with Louis Raynal’s thesis. Intended as the earlier versions of DIYABC for population genetic ...

tl;dr Trying to debug a poorly performing machine learning model, I discovered that the distribution of one of the features varied from one date to another. I used a simple and neat affine rescaling. This simple quality improvement brought down the model’s prediction error by a factor 8 Data ...

In this blog post, we will be exploring how I answered a question that got me my first job as a data analyst. It was an open-ended question and was supposed to be answered in a casual/theoretical way. The question was “How would you collect all cities in Qatar ...

This is a guest post from Uli Muellner, Director of IT & Learning, at Epi-Interactive, a Full Service RStudio Partner. Kia ora koutou, In March we were fortunate to run a face-to-face event in Wellington, New Zealand, bringing people together to d...

This is the latest in my series of screencasts demonstrating how to use the tidymodels packages, from starting out with first modeling steps to tuning more complex models. Today’s screencast walks through how to use text information at the subword le...

By: Brad Lindblad LinkedIn | Github | Blog | Subscribe Package homepage: https://bradlindblad.github.io/cheatsheet/ Package github repo: https://github.com/bradlindblad/cheatsheet {cheatsheet} is a simple R package that downloads helpful R cheatsheets from the repository maintained by RStudio. You could easily just clone the repo these are hosted at ...

The second day of the ABC wwworkshop got a better start than yesterday [for me] as I managed to bike to Dauphine early enough to watch the end of Gael’s talk and Matias Quiroz’ in full on the Australian side (of zoom). With an interesting take on using frequency-domain (...

Hello readers, and today is the next in m series of reviewing the WPA metric and what it can show. If this is the first one you are reading then go catch the other two linked here Win Probability Added – Batsman Review Twenty20 Win Probability Added The first blog covers ...