Metadata are an essential part of a robust data science workflow ; they record the meaning of each variable : its units, quality, allowed range, how we collect it, when it’s been recorded etc. Data without metadata are practically worthless. Here we will show how to transfer the metadata from PostgreSQL to R. In PostgreSQL
In this post we are talking about one of the most unintuitive results of statistics: the so called false positive paradox which is an example of the so called...
Every so often a problem arises where it’s appropriate to use gradient descent, and it’s fun (and / or easier) The post Applying gradient descent – primer / refresher...
Here are a few of the more commonly used notations found in R code and documentation that confuse coders of any skill level who are new to R. Be...
JASP is a free and open source statistics package that targets beginners looking to point-and-click their way through analyses. This article is one of a series of reviews which...
I recently had the need to run an ANCOVA, not a task I perform all that often and my first time using R to do so (I’ve done it...
Installing R packages on Linux systems has always been a risky affair. In RStudio Package Manager 1.0.8, we’re giving administrators and R users the information they need to make installing packages...
Stefanie Butland, rOpenSci Community Manager Some things are just irresistible to a community manager – PhD student Hugo Gruson’s recent tweets definitely fall into that category. I was surprised and...
Do you spend a lot of time on data exploration? If yes, then you will like today’s post about AutoEDA written by Mateusz Staniak. If you ever dreamt of...
The Parallax View In the previous post of this series unveiling the relationship between UFO sightings and population, we crossed the threshold of normality underpinning linear models to construct...
When it comes to data visualization, it can be fun to think of all the flashy and exciting ways to display a dataset. But if you're trying to convey...
Roland Stevenson is a data scientist and consultant who may be reached on Linkedin. When setting up R and RStudio Server on a cloud Linux instance, some thought should be...
Imagine you have a function that only takes one argument, but you would really like to work on a vector of values. A short example on how function Vectorize()...
John Cook recently wrote an interesting blog post on random vectors and random projections. In the post, he states two surprising facts of high-dimensional geometry and gives some intuition...
Here is an example how easy it is to use cdata to re-layout your data. Tim Morris recently tweeted the following problem (corrected). Please will you take pity on...
Since 2017 I have been an instructor for DataCamp, the VC-backed online data science education platform. What this means is that I am not an employee, but I have...
Interactive EDA is nice but customized interactive EDA is even nicer. To celebrate the new CRAN version of my ‘ExPanDaR’ package I prepare a customized variant of ‘ExPanD’ to...
Interactive EDA is nice but customized interactive EDA is even nicer. To celebrate the new CRAN version of my ‘ExPanDaR’ package I prepare a customized variant of ‘ExPanD’ to...
Randomization is super useful because it usually eliminates the risk that confounding will lead to a biased estimate of a treatment effect. However, this only goes so far. If...
This month’s issue of Significance magazine has a very nice summary article of the sinh-arcsinh normal distribution. (Unfortunately, the article seems to be behind a paywall.) This distribution was...
![BayesComp 20 [full program]](https://xianblog.files.wordpress.com/2011/08/img_9254.jpg?w=450&h=338)
The full program is now available on the conference webpage of BayesComp 20, next 7-10 Jan 2020. There are eleven invited sessions, including one j-ISBA session, and a further...
Bioconductor S4 classes for high-throughput omics data Motivation Multi-omics data integration and analysis. What a beast! It is one of the major challenges in the era of...
At least globally, that is. According to the 2019 Stack Overflow Developer Survey, R users globally reported earning an average of $64k per year, $1k more than the $63k...
The Central Bank of Brazil (BCB) offers access to its SGS system (sistema gerenciador de series temporais) with a official API available here. With time, I find myself using more...
Last week, a new version of {attempt} was published on CRAN. This version includes some improvements in the current code base, and the addition of new functions. You can get it with...
The Bayesian framework is quickly gaining popularity among scientists, leading to the growing popularity of packages to fit Bayesian models, such as rstanarm or brms. However, extracting summary indices...
CategoriesData Management Tags Case Study Data Manipulation Data Visualisation R Programming tidyverse This article was jointly written by Arvid J. Kingl & Viktor Konakovsky The Battle for Wesnoth is an open-source, turn-based strategy game. The game...
Hi there! Last summer, the Royal Botanical Garden (Madrid, Spain) hosted the first edition of MadPhylo, a workshop about Bayesian Inference in phylogeny using RevBayes. It was a pleasure for...
What R users now call piping, popularized by Stefan Milton Bache and Hadley Wickham, is inline function application (this is notationally similar to, but distinct from the powerful interprocess...
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