I am very happy to announce the release of dfms version 1.0 (and 0.4.0 just a week earlier, see news), implementing major features such as support for dynamic factor models (DFMs) with autoregressive errors, mixed-frequency (monthly-quarterly) DFMs, including with autoregressive errors, and decomposition of forecast revisions into news releases (updates to time ...
Dear rOpenSci friends, it’s time for our monthly news roundup! You can read this post on our blog. Now let’s dive into the activity at and around rOpenSci!
rOpenSci HQ
Open call for the rOpenSci Champions Program 2026!
We are pleased t... [Read more...]
There was a very long time without a blog post from me.
I will start now again with a very short blog post with some book and blog recommendations.
I think two still very hot topics currently are AI and Causal Modelling.
AI
For a theoretical A... [Read more...]
Read it in: Español. Maintaining an open source package is rewarding work, but it’s also a lot of work.
Life and careers change, interests shift, and sometimes you simply don’t have the time or energy to keep working on your R package (and that’s okay!1).
When ... [Read more...]
Guest post by Christian Martinez, developer of the nycOpenData package in R.
nycOpenData: A unified R interface to NYC Open Data APIs
I am pleased to announce the release of nycOpenData, an R package providing convenient, tidy access to dozens of ...
I saw a fun video on YouTube recently in which some runners attempted to do two parkruns in one day. I don’t mean run the same parkrun course twice, I mean they ran one parkrun at one course and then drove to a different course and ran that one ...
Do prices feel like they are rising more than the CPI (Consumer Price Index) says? Yes.
For 2025 the overall CPI increased by a pretty moderate 2.7% (CPI-U for all urban cons...
Thanks to Athanasia Mo Mowinckel for reviewing this post!
One goal of mine this year is to learn how to crochet amigurumi, that is to say, cute creatures.
When working on my first project, a cat toy made out of yarn left-over from knitting projects, I ... [Read more...]
This document describes the addition of support for variable fonts in R, when rendering glyphs, plus changes to the CRAN package xdvir to take advantage of that ...
Boxing analysis is no longer just about punch totals or “who looked busier.” Modern fight analysis is data science: repeatable pipelines, validated data, explainable models, and performance indicators that translate into strategy. This post shows how to build a professional fight data science workflow in R—from raw data to ... [Read more...]
Preamble: I had a roughly 8 year break from blogging and focussed on kids plus related duties. This year, I will try to start again.
My goal is to write about (advertising-related) research and how practitioners can apply the insights.
Todays paper i... [Read more...]
We are pleased to announce the release of {pharmaversesdtm} 1.4.0 🎉
This release expands the breadth of SDTM test data available in the package, with a particular focus on neurology and oncology, alongside several targeted enhancements and fi...
We are pleased to announce the release of {pharmaversesdtm} 1.4.0 🎉
This release expands the breadth of SDTM test data available in the package, with a particular focus on neurology and oncology, alongside several targeted enhancements and fi...
Alt Text
First things first, if you haven’t heard of or used alt text before, it
is a brief written description of an image that explains context and
purpose. It is used to improve accessibility by allowing screen readers
to describe images, or p...
1 Introduction – Why This Topic Matters
A model that performs exceptionally well on a test set is not necessarily a good model; in many cases, it is a warning sign. High accuracy or low error metrics are meaningful only if we understand h...
I am incredibly excited to announce the release of the futurize package. This launch marks a major milestone in the decade-long journey of the Futureverse project.
Since the inception of the future ecosystem, I (and others) have envisioned a tool ...
At the beginning of 2025, we outlined our goals for the year, our 2024 Highlights. As the year started, our work took place in a far more challenging global context than many of us anticipated. Across many countries, science and research faced funding... [Read more...]
This semester I was teaching a graduate course on Monte Carlo methods at Paris Dauphine and I decided to experiment how helpful ChatGPT would prove in writing the final exam. Given my earlier poor impressions, I did not have great expectations and ended up definitely impressed! In total it took ...
1 Introduction – Why This Topic Matters
A model that performs exceptionally well on a test set is not necessarily a good model; in many cases, it is a warning sign. High accuracy or low error metrics are meaningful only if we understand h...
In my recent book (see below), on page 166 and earlier, I made the point that, with pairwise comparisons and, more generally, whenever simultaneous statistical tests are performed, it is necessary to provide P-values that account for the familywise ...