Vincent Arel-Bundock
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vincentab.bsky.social
Vincent Arel-Bundock
@vincentab.bsky.social
Prof. Most tweets about R. “Polisci, it’s all about what’s going on.”

http://arelbundock.com
Pinned
Whoa—my book is up for pre-order!

𝐌𝐨𝐝𝐞𝐥 𝐭𝐨 𝐌𝐞𝐚𝐧𝐢𝐧𝐠: 𝐇𝐨𝐰 𝐭𝐨 𝐈𝐧𝐭𝐞𝐫𝐩𝐫𝐞𝐭 𝐒𝐭𝐚𝐭 & 𝐌𝐋 𝐌𝐨𝐝𝐞𝐥𝐬 𝐢𝐧 #Rstats 𝐚𝐧𝐝 #PyData

The book presents an ultra-simple and powerful workflow to make sense of ± any model you fit

The web version will stay free forever and my proceeds go to charity.

tinyurl.com/4fk56fc8
Reposted by Vincent Arel-Bundock
Look at the distribution of z-values from medical research!
November 4, 2025 at 10:36 PM
What are the chances of winning by a single vote in an election with 11K voters?

It happened last night in our local municipal election!
November 3, 2025 at 7:03 PM
Reposted by Vincent Arel-Bundock
This, by @vincentab.bsky.social, is the most straight-up *useful* book I’ve bought in a long while.
November 3, 2025 at 6:40 PM
Reposted by Vincent Arel-Bundock
Version 2.0.0 of emmeans is out! Notable changes: new look to the plots, qdrg() now an S3 method, and new maintainer (me, Russ still highly involved). cran.r-project.org/package=emme...
emmeans: Estimated Marginal Means, aka Least-Squares Means
Obtain estimated marginal means (EMMs) for many linear, generalized linear, and mixed models. Compute contrasts or linear functions of EMMs, trends, and comparisons of slopes. Plots and other displays...
cran.r-project.org
October 29, 2025 at 4:05 PM
Reposted by Vincent Arel-Bundock
I just ordered @vincentab.bsky.social 's epic new book Model to Meaning.

This project is one of the most exciting recent developments in data science. The book & #rstats / #python package show how to understand your model *within* its real-world context/use case.

www.routledge.com/Model-to-Mea...
Model to Meaning: How to Interpret Statistical Models with R and Python
Our world is complex. To make sense of it, data analysts routinely fit sophisticated statistical or machine learning models. Interpreting the results produced by such models can be challenging, and re...
www.routledge.com
October 31, 2025 at 1:19 PM
Reposted by Vincent Arel-Bundock
Question, if you were including something like this 👇in a report or paper, would you label it as e.g. "Table 1" or "Figure 1"?

Or something else?

(assuming whatever software you're using let's you pick either)

#DataViz #RStats
October 30, 2025 at 3:44 PM
Reposted by Vincent Arel-Bundock
Looks like Christmas came early this year 🤩 @vincentab.bsky.social
October 29, 2025 at 5:22 PM
Reposted by Vincent Arel-Bundock
Say I wanted ~9k USD to buy out the teaching time of a prof (a brilliant coauthor of mine) so he can work on creating a validated ground truth dataset for a challenging data extraction and labelling task that current public LLMs (e.g. GPT5) have not yet saturated. Who do I pitch?
October 27, 2025 at 6:53 PM
Reposted by Vincent Arel-Bundock
duckdb-mlpack 0.0.2: mlpack is now a duckdb community extension
Bringing mlpack machine learning to duckdb SQL
dirk.eddelbuettel.com/blog/2025/10...
October 26, 2025 at 1:58 PM
Reposted by Vincent Arel-Bundock
I think this is kind of neat and I don't think anyone else has noticed it (I've looked and I can't find anyone who has) osf.io/preprints/so...

Maybe I should back off "justification" language, but it's at least a remarkable coincidence. I still think someone else *must* have noticed it...
October 24, 2025 at 12:23 PM
Reposted by Vincent Arel-Bundock
The recording is now available so that you can confirm that I indeed have a German accent and color-match my outfits with my Zoom background.

youtu.be/YL0co26ng-g?...
October 21, 2025 at 3:16 PM
Reposted by Vincent Arel-Bundock
Look what arrived in the mail today! It's my copy of the pink book of marginaleffects by @vincentab.bsky.social

#rstats
October 21, 2025 at 12:41 PM
"This is a disaster! This paper should be a wake up call."
-A.Fowler

I looove this podcast. Starts with a brief interview with an author. Then, three super smart hosts launch into a wide ranging discussion of the topic. They don't pull punches.

I'm pleased to be on this week!

har.rs/493JVn3
October 17, 2025 at 1:08 PM
Reposted by Vincent Arel-Bundock
Andrew is an amazing, knowledgeable, and dedicated teacher.

I bet this is going to be a great class.
If you've ever wanted to learn how to make beautiful websites with #QuartoPub and #rstats , check out this workshop I'm giving in a couple weeks! It'll be a blast (and we're covering Quarto's brand new _brand dot yaml system!)
Learn to create and publish a professional, data-focused website in “Create an Online Presence with Quarto Websites” on October 16-17, with @andrew.heiss.phd‬! Discover how to use #Quarto to build a variety of websites like personal portfolios, research compendiums, and interactive dashboards.
October 4, 2025 at 2:18 AM
{tinytable} 0.14.0 for #RStats makes it super easy to draw tables in html, tex, docx, typ, md & png.

There are only a few functions to learn, but don't be fooled! Small 📦s can still be powerful.

Check out the new gallery page for fun case studies.

vincentarelbundock.github.io/tinytable/vi...
September 29, 2025 at 12:44 PM
Yesterday evening, I picked these bad boys up from the mailbox. This morning, I’m taking out the recycling.
September 26, 2025 at 1:16 PM
Reposted by Vincent Arel-Bundock
I'm exited to announce a new resource about making slides with quarto and revealjs. This book is the combination of all the work I have done in this area, reordered and polished up

There isn't a lot of new information yet, but this format allows me to add more easily

slidecrafting-book.com
#quarto
September 24, 2025 at 4:12 PM
The Pink Book of #MarginalEffects (aka Model to Meaning) ships next week and I've got a backlog of Zoolander memes.

Hope you're hungry for some spam in your timeline.

#RStats #PyData
September 22, 2025 at 4:52 PM
"What I take from Aaron is that the best way to be truly productive on the margin, is to try to build for other people and connect them together."
September 22, 2025 at 12:09 PM
Whoa—my book is up for pre-order!

𝐌𝐨𝐝𝐞𝐥 𝐭𝐨 𝐌𝐞𝐚𝐧𝐢𝐧𝐠: 𝐇𝐨𝐰 𝐭𝐨 𝐈𝐧𝐭𝐞𝐫𝐩𝐫𝐞𝐭 𝐒𝐭𝐚𝐭 & 𝐌𝐋 𝐌𝐨𝐝𝐞𝐥𝐬 𝐢𝐧 #Rstats 𝐚𝐧𝐝 #PyData

The book presents an ultra-simple and powerful workflow to make sense of ± any model you fit

The web version will stay free forever and my proceeds go to charity.

tinyurl.com/4fk56fc8
September 17, 2025 at 7:49 PM
Reposted by Vincent Arel-Bundock
You're very welcome @vincentab.bsky.social

P.S. Check out our preprint on an alternative to staring at coefficients: j-rohrer.github.io/marginal-psy...
September 17, 2025 at 1:32 PM
Reposted by Vincent Arel-Bundock
Come see our work on using LLMs to track political science research methods at APSA at 4pm today!

We find the latest LLMs beat graduate student RAs at extracting information from academic papers
September 13, 2025 at 8:02 PM
The new {marginaleffects} release for #RStats (0.30.0) comes with two new vignettes:

1. Speed up computation with automatic differentiation (often 10x gains) marginaleffects.com/bonus/perfor...

2. Power analyses with {marginaleffects} and {DeclareDesign}. marginaleffects.com/bonus/power....
37  Performance – Model to Meaning
marginaleffects.com
September 13, 2025 at 6:37 PM
This is a paper I really care about. I feel the core message is very important for social scientists in general, and political scientists in particular.

"Quantitative Research in Political Science is Greatly Underpowered."

(with A+ co-authors)
September 11, 2025 at 2:29 AM