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Guillaume Dalle

@gdalle.bsky.social
5.3K followers 1.9K following 604 posts

Researcher in machine learning and optimization. Open source enthusiast. Parody songwriter (aka PianoHamster). OCD survivor.

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Guillaume Dalle @gdalle.bsky.social · 27/07/2026
Ce doux sentiment de désespoir quand tu te rappelles que les prochains étés seront de pire en pire, pendant toute ta vie. youtu.be/ffkm9mKFXm4?...
youtu.be
C'est le printemps
YouTube video by PianoHamster
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Pierre Marion @pierremarion.bsky.social · 23/07/2026
Excited to welcome Queer in AI to NeurIPS Europe! 💫
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Guillaume Dalle @gdalle.bsky.social · 06/07/2026
Ça faisait trop longtemps que je n'avais pas écrit de chanson ! Et l'actualité est tellement gaie, pourquoi se priver ? youtu.be/62xHs6LM2B4
youtu.be
Crasse des grands hommes [TW abus sexuels]
YouTube video by PianoHamster
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Transactions on Machine Learning Research @tmlrorg.bsky.social · 22/06/2026
TMLR has been facing an significant uptick in the number of submissions since the start of 2026. This is placing an extreme burden on our amazing team of reviewers & action editors. To ease this burden, TMLR will be implementing submission quotas, effective July 1. 1/n medium.com/@TmlrOrg/ann...
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Guillaume Dalle @gdalle.bsky.social · 26/05/2026
Very exciting to see the team behind PyData Paris crossing language borders! I'll definitely attend 👀
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Mathieu Besançon @matbesancon.bsky.social · 19/04/2026
Pretty late to the party, but I was honored to receive the Robert Faure prize 2026 from the French Operations Research Society! matbesancon.xyz/post/2026-04...
matbesancon.xyz
Robert Faure Prize 2026 | μβ
I’m proud and honored to have received the Robert Faure prize 2026, alongside two fantastic peers Salma Makboul and Julien Grand-Clément. The prize is awarded by the French Operations Research Society...
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Guillaume Dalle @gdalle.bsky.social · 28/12/2025
Crossword pro tip: solve it as a team with your smarter girlfriend. First time under an hour for a Sunday grid!
Best times for the NYT crossword by day of the week
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Guillaume Dalle @gdalle.bsky.social · 17/12/2025
I find it extremely comforting to know that Python development will basically be revolutionized every two years by @crmarsh.com and his crew at Astral. astral.sh/blog/ty
astral.sh
ty: An extremely fast Python type checker and language server
ty is an extremely fast Python type checker and language server, written in Rust, and designed as an alternative to mypy, Pyright, and Pylance.
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Gautam Kamath @gautamkamath.com · 04/12/2025
IJCAI 2026 will charge $100 USD per submission. Funds will be used to compensate reviewers. 2026.ijcai.org/ijcai-ecai-2...
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Guillaume Dalle @gdalle.bsky.social · 03/12/2025
Note to self: create a second Spotify account to work on song covers. Maybe this will allow my end-of-year recap to not look like an obsessive French pop fever dream.
My top song on Spotify this year was by “Les Fatals Picards”, I listened to it 235 times
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Adrian Hill @adrianhill.de · 02/12/2025
Awesome to see the French government recognize our work on open-source software! @ouvrirlascience.bsky.social
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Guillaume Dalle @gdalle.bsky.social · 02/12/2025
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.
A close up of the trophy for the "prix science ouverte du logiciel libre de recherche, édition 2025" (open science prize for free research software, 2025 edition)
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Guillaume Dalle @gdalle.bsky.social · 30/11/2025
Trying to learn Rust for the Advent of Code, and literally every page of the manual has me going “wow, that *is* a problem I encountered in other languages and what a clever way to solve it”.
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Gaël Varoquaux @gaelvaroquaux.bsky.social · 29/11/2025
Yes!!! This is what prompted me to write the following paper: dl.acm.org/doi/full/10.... A lot is explained by narratives and social norms driving research. We need to build our own narratives, as a research community, this is what we do
dl.acm.org
Hype, Sustainability, and the Price of the Bigger-is-Better Paradigm in AI | Proceedings of the 2025 ACM Conference on Fairness, Accountability, and Transparency
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Guillaume Dalle @gdalle.bsky.social · 28/11/2025
Don't mind me, just going through old, irrelevant posts
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Lionel @spiindoctor.bsky.social · 27/11/2025
each poster session at #neurips2025 has about 1000 posters. stupid question but isn't that too much?
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Guillaume Dalle @gdalle.bsky.social · 25/11/2025
Monotone operator theory be like: every algorithm is a fixed-point algorithm. A strangely comforting idea.
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Guillaume Dalle @gdalle.bsky.social · 21/11/2025
⚠️ WANTED: PhD student ⚠️ The topic? GPU-friendly algorithms for discrete optimization and mathematical programming, to be used inside decision-focused learning pipelines. The mentors? My colleague Axel Parmentier and myself. [1/3]
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Guillaume Dalle @gdalle.bsky.social · 21/11/2025
Claude poets society
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Guillaume Dalle @gdalle.bsky.social · 19/11/2025
Teaching a class on decomposition methods for MILPs tomorrow and I'm wondering what the modern alternative is for "master problem" (as opposed to the pricing subproblem). Any suggestions? I've been using "main problem" but it feels too generic.
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Guillaume Dalle @gdalle.bsky.social · 08/11/2025
Note to self: in the future, check the author names twice *before* sending review invitations. This lesson is sponsored by the Shameful Society of New Action Editors who Invited Authors to Review their Own Paper.
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Guillaume Dalle @gdalle.bsky.social · 07/11/2025
OpenReview? More like BrokenReview, amirite?
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Guillaume Dalle @gdalle.bsky.social · 04/11/2025
Gotta love how objectively insane it is that we even have to say this out loud.
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Guillaume Dalle @gdalle.bsky.social · 03/11/2025
Doing my first reviewer assignment as an editor, and I can officially confirm: we need fewer papers and more reviewers.
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Guillaume Dalle @gdalle.bsky.social · 28/10/2025
Happy to announce that I joined the crew of @tmlrorg.bsky.social as an action editor 📝 We need a publication model with the fast turnaround of ML conferences but no attendance requirement and less reviewer lottery. I believe TMLR is part of the solution, and if you do too, come review with us!
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Guillaume Dalle @gdalle.bsky.social · 27/10/2025
I’m recruiting a postdoctoral researcher on a fully funded 2-year contract. The topic is developing and implementing new parallel graph algorithms, with applications to data-driven transportation and logistics. Details and application procedure below ⬇️ Reach out if you have any questions!
acme-mobidec.github.io
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Guillaume Dalle @gdalle.bsky.social · 23/10/2025
Désolé c'était trop tentant. www.youtube.com/watch?v=pUNM...
youtube.com
Sarko, libre dans sa tête
YouTube video by PianoHamster
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Guillaume Dalle @gdalle.bsky.social · 23/10/2025
Désolé c'était trop tentant. www.youtube.com/watch?v=pUNM...
youtube.com
Sarko, libre dans sa tête
YouTube video by PianoHamster
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Guillaume Dalle @gdalle.bsky.social · 20/10/2025
I’m reasonably confident that this is the first Disney song cover about machine learning conferences. At least the first one so far. Don’t tempt me. #MLSky youtu.be/kWkgl9Mb2p4?...
youtu.be
San Diego
YouTube video by PianoHamster
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Guillaume Dalle @gdalle.bsky.social · 20/10/2025
I’m reasonably confident that this is the first Disney song cover about machine learning conferences. At least the first one so far. Don’t tempt me. #MLSky youtu.be/kWkgl9Mb2p4?...
youtu.be
San Diego
YouTube video by PianoHamster
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Guillaume Dalle @gdalle.bsky.social · 17/10/2025
JuliaCon Local Paris 2025 is a wrap! Thank you so much to all of our attendees and presenters, who made this conference a wonderful mix of software and science. Next step: watch out for the talk recordings on YouTube... and see you next year in Germany! www.youtube.com/playlist?lis...
Group photo at JuliaCon Local Paris 2025Entrance to CNAM for JuliaCon Local Paris 2025Keynote by Ivet Galabova at JuliaCon Local Paris 2025Hackathon at JuliaCon Local Paris 2025
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Guillaume Dalle @gdalle.bsky.social · 13/10/2025
Periodic appreciation post for this gem of a review by Hannah Bast and coauthors. If you think you know how to compute shortest paths... trust me, you don't. I can give you one spoiler though: preprocessing the graph helps A LOT. doi.org/10.1007/978-...
Screenshot of Figure 7 from "Route Planning in Transportation Networks" by Bast et al. (2016). It is a graph comparing various route-planning algorithms on the road network of Western Europe. The X axis is the preprocessing time of the graph, and the Y axis is the time taken by an individual path query after that. Both axes span several orders of magnitude along the Pareto frontier between fast queries and fast preprocessing.
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Guillaume Dalle @gdalle.bsky.social · 09/10/2025
Me this morning in front of a class: “So Euler wanted to cross all 7 bridges exactly once during his stroll…” An inquisitive high school student: “Was Euler smoking opium?”
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JuliaCon 2026 @juliacon.org · 01/10/2025
The European open-source community is growing, and it's only the beginning! See you all in Paris 🥐
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Guillaume Dalle @gdalle.bsky.social · 01/10/2025
JuliaCon Local Paris starts tomorrow 🤩 Which part of our amazing program are you most excited about? #JuliaLang @juliacon.bsky.social @julialang.org
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Guillaume Dalle @gdalle.bsky.social · 24/09/2025
Can anyone recommend good substacks in the AI / ML / OR space? What are y’all reading?
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JuliaCon 2026 @juliacon.org · 24/09/2025
Meet our second Platinum sponsor for the Paris event! CodeGlass helps software teams look inside their running #JuliaLang applications, with profiler and time-travel analysis tools. Wanna trace performance and memory back to the lines of code that really matter? Check them out 👀
An advertisement for the software company CodeGlass: "bringing clarity to Julia's runtime"
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JuliaCon 2026 @juliacon.org · 23/09/2025
JuliaHub has sponsored every single JuliaCon since 2014, and this year is no different! Check out their JuliaCon Global 2025 Pittsburgh Sponsor Talk, and look out for them at JuliaCon Local Paris in a few weeks! youtu.be/zCUQfE-MGgM
youtu.be
JuliaHub Sponsor Talk | Viral B. Shah | JuliaCon Global 2025
YouTube video by The Julia Programming Language
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Guillaume Dalle @gdalle.bsky.social · 22/09/2025
After more years than I care to admit, I am pleased to announce that I finally know what the fuck Farkas' lemma was trying to tell me all along. en.wikipedia.org/wiki/Farkas%...
en.wikipedia.org
Farkas' lemma - Wikipedia
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Pierre Alquier @pierrealquier.bsky.social · 20/09/2025
This is not OK. I don't submit often to NeurIPS, but I reviewed papers for this conference almost every year. As a reviewer, why would I spend time trying to give a fair opinion on papers if it's what happens in the end???
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Mathieu Besançon @matbesancon.bsky.social · 18/09/2025
@neuripsconf.bsky.social decisions and stats are out. Definitely sad that a great initiative was set up but NOT what it should be: a third option to avoid 5000 authors burning kerosene crossing the world to present 8 pages
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NeurIPS Europe @neuripseurope.bsky.social · 19/09/2025
It may only be a band-aid, but we have just announced our new "Salon des Refusés" sessions for papers rejected due to space constraints: bsky.app/profile/euri...
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NeurIPS Europe @neuripseurope.bsky.social · 19/09/2025
Congratulations to everyone who got their @neuripsconf.bsky.social papers accepted 🎉🎉🎉 At #EurIPS we are looking forward to welcoming presentations of all accepted NeurIPS papers, including a new “Salon des Refusés” track for papers which were rejected due to space constraints!
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Guillaume Dalle @gdalle.bsky.social · 19/09/2025
Is this the year we finally break up @neuripsconf.bsky.social?
Distracted boyfriend meme, featuring NeurIPS as the boyfriend.
Angry girlfriend: “allow authors to present in Copenhagen”
Girl passing by: “drop 400 accepted papers due to San Diego venue constraints”
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Guillaume Dalle @gdalle.bsky.social · 18/09/2025
Very happy to see #JuliaLang percolating into European tech... especially in such a critical sector!
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Guillaume Dalle @gdalle.bsky.social · 17/09/2025
It's too late to sponsor this year's edition, but if your firm wants to sponsor the 2026 event in Mainz, do reach out!
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Guillaume Dalle @gdalle.bsky.social · 04/09/2025
Software enthusiasts of all fields and backgrounds, unite! Here's the exciting schedule we cooked up for #JuliaCon Local Paris 2025 (the one for #PyData is just as thrilling!). Get your tickets while you can, and see you in a month ⌛ @julialang.org @juliacon.bsky.social @pydataparis.bsky.social
Schedule overview for JuliaCon Local Paris 2025. Full information available at https://pretalx.com/juliacon-local-paris-2025/schedule/
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Guillaume Dalle @gdalle.bsky.social · 30/08/2025
Currently watching a performance of The Book of Mormon where the lead (Elder Price) looks like Emmanuel Macron. Not gonna lie, it works surprisingly well 🤷
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Guillaume Dalle @gdalle.bsky.social · 26/08/2025
Full schedule available for JuliaCon Local Paris 2025: pretalx.com/juliacon-loc... #JuliaLang folks, which talks are you most excited about? Anyone from the #PyData community planning to swing by? @juliacon.bsky.social @julialang.org @pydata.bsky.social
pretalx.com
https://pretalx.com/juliacon-local-paris-2025/schedule/
JuliaCon Local Paris 2025 Get different formats: curl https://pretalx.com/juliacon-local-paris-2025/schedule/\?format=table (default) curl https://pretalx.com/juliacon-local-paris-2025...
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Guillaume Dalle @gdalle.bsky.social · 22/08/2025
🚨 Breaking news 🚨 Two epic tutorials announced for #JuliaCon Local Paris 2025: one about Pluto notebooks and one about using JuMP for optimization. Be sure to get your tickets this week, otherwise the early bird pricing will be gone 🦜 @juliacon.bsky.social @julialang.org @pydataparis.bsky.social
A flashcard for a tutorial at JuliaCon Local Paris 2025. The speakers are Fons Van Der Plas (educational technology officer at TU Eindhoven) and Boshra Ariguib (master's student in CS at the University of Stuttgart). The title is "How to tell an interactive story with Pluto: lectures and dashboards".
The conference takes place on October 2nd and 3rd, see the website at https://juliacon.org/local/paris2025/A flashcard for a tutorial at JuliaCon Local Paris 2025. The speaker is Benoît Legat (assistant professor at UCLouvain). The title is "Optimization with JuMP".
The conference takes place on October 2nd and 3rd, see the website at https://juliacon.org/local/paris2025/
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