Mattias Villani

Job offer alert! My friend @matbesancon.xyz and myself are recruiting a pre-doctoral intern at the crossroads between optimization, game theory and transportation! See this link for details: acme-mobidec.github.io/assets/pdf/j...

A very well produced documentary on the KDE desktop, showing the beauty of collaborating on free software. The unsung heroes of tech! youtu.be/1Vyzla9mx4g?...

We're back! 🎉 "Julia is back in the TIOBE index top 20, having last reached this milestone three years ago. Back then, it might have been dismissed as a passing hype, but its renewed presence suggests that its popularity may be more sustainable this time." www.tiobe.com/tiobe-index/ #julialang

Julia rising in TIOBE. Here we go! www.tiobe.com/tiobe-index/

Observable is just fantastic. It has really helped in my teaching and communication with students. So happy to see continued efforts to advance it. #visualization #observable

God morgon! Inte kan ni väl föreställa er en bättre start på dagen än att läsa min ledarkrönika i dagens GP? www.gp.se/ledare/gastk...

The StanCon2026 conference on probabilistic programming for Bayes in Uppsala is over. Very positive experience with interesting talks, a large poster session and social activities. And some HMC updates to modernize the Bayesian Songbook! All talks are on YouTube: youtube.com/playlist?lis...

There is now StanCon 2026 Uppsala playlist www.youtube.com/playlist?lis... At the moment talks by @mjskay.com, @aseyboldt.bsky.social, @paulbuerkner.com, @charlesm993.bsky.social are up, and we'll keep uploading more during the week

JuliaCon is starting now. Livestreamed and recorded on YouTube. I have always liked how the Julia folks invite speakers from other languages than Julia, even as keynotes.

I am currently using VS Code for my Julia work, but I am considering alternatives. Anyone here who has some experience with the Flexible Julia plugin for PyCharm? What does it do better than VS code? What do you miss from VS code? #julialang plugins.jetbrains.com/plugin/29356...

This was my introduction to Bayes in 1996! Little did I know then that I would see Jim Berger and a few other prominent Bayesian Scholars perform striptease in a run down night club in Spain two years later! #bayesian

Norm Matloff (1948-2026) @matloff.bsky.social I was made aware of the post below made by his daughter. We lost another friend and valued long-time contributor the #Rstats community, gone far too soon, and sure to be missed. His memory will be a blessing.

So many great scholars leaving Stats and Computing after Springer Nature announcing an insanely large article processing cost of 2390€ per accepted paper.

What a wonderful contribution this is! Free and open source software for the benefit of all. What a legacy!

R-folks, is the RTMB package the go-to autodiff package in R now? Limitations? Fast? Alternatives? #RStats #r4ds

Uncertainty in the LLM era - Science, more than scale speakerdeck.com/gaelvaroquau... My #EurIPS keynote, on scale, uncertainty, and narratives in AI

My baby #JuliaLang package got an award! DifferentiationInterface.jl just received a national prize for open-source research software and I couldn't be prouder. We started this from a vague dream with @adrianhill.de, and reached 1000 dependents and 100k downloads last month. Research != just papers.

We are recruiting a PhD student at Chalmers University of Technology, Gothenburg, Sweden. The project explores Bayesian Experimental Design for real-time, risk-aware trajectory planning in autonomous driving, combining Bayesian inference and optimal control Apply by November 30 tinyurl.com/4mr6u79y

Do this, if you can! Your work will reach thousands of thankful Bayesians.

Very nice 70 page intro to Julia in these notes. Well done!

Julia v1.12 is out 🎈🙃 #JuliaLang discourse.julialang.org/t/julia-v1-1...

Great to see the forecast package from R in native Julia. One less use case for RCall.jl in my workflow.

This is a wonderful side-by-side comparison!

So me and my buddy chatGPT are now into using Lua filters in the Quarto YAML to hook into the pandoc AST to modify the inline LaTeX at compile time to convert LaTeX syntax to things that render correctly to html. It works, that is all I can tell you.

"Spotify for Linux is a labor of love from our engineers that wanted to listen to Spotify on their Linux development machines. They work on it in their spare time and it is currently not a platform that we actively support." Honest, but weird when you have the money and passionate people. #linux

We also wish a pleasant weekend to the couriers who transform our parcels in their own way, #stats!

An excellent way to feel like a complete loser is to try to do something semi-advanced with LaTeX. It is also a great way to waste an afternoon.

If you're interested in learning #JuliaLang and are currently an #RStats user (or even if you're not!), then here's a little introduction to getting started! 📊 Blog post: nrennie.rbind.io/blog/introdu... #QuartoPub #Julia @tidierjl.bsky.social

My Bayesian Data Analysis course at Aalto is starting in 20mins. There are now 375 registered students, but as the course is not compulsory for most, I expect about 230 students to finish it. All the course material is available online at avehtari.github.io/BDA_course_A...

Dusting of my old Lenovo ThinkPad X220, bought 14 years ago. Still snappy after a fresh Linux install! #linux

Hmm, I can't quite pin it down, but something seems missing here?

Remember to follow the official rebuttal guide.

Yes, the interoperability between Julia and many other languages is amazing! I often work in the other direction, calling for example these from within Julia code: - R (github.com/JuliaInterop...) - Python (github.com/JuliaPy/PyCa...) - Matlab (github.com/JuliaInterop...) from Julia. #julialang

Contemplating starting a side business where I make academics' #rstats ggplot charts non-ugly for $25 a pop.

RCall.jl is really useful. Take any function that you like from R and turn into a Julia function without any hassle. I use this a lot when benchmarking my research coded in Julia with established methods in R.

Hello Friends! I'm on the job market now! I have a oodles of knowledge for all the software performance engineering tricks in Rust, Julia and other systems languages and would love to work with teams that are looking to skill up in those respects, from back ends to big data crunching!

Data Science/ML/Stats academics: We are hiring a senior lecturer to contribute to research and the new (hugely popular) master's in Data Science, Statistics and Decision Analysis: bit.ly/3GZj0N9 Excellent job security, health care, pensions and all that. Reposts appreciated! bit.ly/435VTYW

A wonderful upcoming Turing.jl talk: github.com/TuringLang/T... This is part of learnbayes.se with seminars from Andrew Gelman, Frank Harrell and Aki Vehtari and more. Bayes and Julia, the best things in life are free! #julialang

Want to participate in #TidyTuesday but #julialang is more your speed? Check out #TidierTuesday! github.com/TidierOrg/Ti... Big shout out to @jonthegeek.com , @frankiethull.bsky.social , and the folks behind @tidierjl.bsky.social for their work making this happen.

Why choose between Julia and R when you can use both? With RCall.jl, you can tap into R’s ecosystem—like classInt—directly from Julia. Learn how to bridge both worlds and expand your analytical toolbox: medium.com/@technocrat/... #JuliaLang #DataScience #RStats #Interop #programming #analytics

Took me many years before I learned the \phantom command in LaTeX, and its precision still brings me joy. 'The \phantom command creates a box with the same height, depth, and width as subformula, but empty.' latexref.xyz/_005cphantom...

I know, it's only Taylor approximations (but I like it). observablehq.com/@mattiasvill...

This sounds interesting for those in the area #julialang