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Mathieu Besançon

@matbesancon

Researcher in mathematical optimization at Inria Grenoble, caffeine-fueled computational scientist and open-source developer

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08.10.2023
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Latest posts by Mathieu Besançon @matbesancon

Another missed opportunity after *check notes* the first and second Ukraine wars, Georgia, Irak...

09.03.2026 12:26 👍 2 🔁 0 💬 0 📌 0

Je pensais avoir un quartier de gauche, et j'ai regardé les affiches de ma rue 😭

09.03.2026 08:55 👍 0 🔁 0 💬 0 📌 0

Super curious to see the final slide deck if you make it public!

17.02.2026 09:23 👍 3 🔁 0 💬 0 📌 0
Marie Skłodowska-Curie Actions Postdoctoral Fellowships: 2026 Inria Training Programme & Hosting Offers Inria proposes a full-fledged training programme for Marie Skłodowska-Curie Actions Postdoctoral Fellowships (MSCA PF) candidates, as well as numerous project hosting offers. This will allow you, thro...

Inria (sadly not here yet) will be preparing candidates for the Marie Skłodowska-Curie Postdoctoral Program scholarships.
The institute also centralized a whole list of hosting teams (including GHOST, mine!) with potential topics:
www.inria.fr/en/marie-skl...

17.02.2026 09:19 👍 4 🔁 3 💬 0 📌 0

It's not so much against the tool itself, it's more like everyone seems to focus on designing better and better hammers because they're conceptually appealing while home improvement people are left with screwdriver models from the 90s

09.02.2026 22:25 👍 2 🔁 0 💬 1 📌 0

Which operation do you have in mind?

09.02.2026 22:18 👍 1 🔁 0 💬 1 📌 0

Les Grenoblois quand les Lyonnais viennent en rando en chaussures bateau et chino

09.02.2026 17:59 👍 2 🔁 0 💬 0 📌 0

Don't get me wrong I have nothing against doing that theoretical upper bound research. The drama is that I struggle to find real improvements to maxflow (or more generally flow?) algorithms that came from this theoretical progress. Isn't that one role that theoretical algorithmic should fill?

09.02.2026 16:23 👍 5 🔁 1 💬 2 📌 0

Hi XYZ, I found your paper with the smart algorithm for problem blah and wanted to implement it for my hard blah instances
TCS people looking at each other whispering "he... He doesn't know"

04.02.2026 21:21 👍 3 🔁 0 💬 0 📌 0

And yes, this is brought to you by maxflow

04.02.2026 20:24 👍 5 🔁 0 💬 1 📌 1
Preview
Galactic Algorithms Algorithms with huge running times David Johnson is a renown computer theorist who was awarded the 2009 Knuth Prize, for his seminal contributions to theory. He is famous for: his many great papers…

Related, today I learned about the phrase "galactic algorithms": rjlipton.com/2010/10/23/g... which exactly describes that: the whole zoo of "algorithms" that will never be useful if one needs to solve instances of the problem they are addressing

04.02.2026 20:24 👍 6 🔁 0 💬 2 📌 0

<academic rant>
I am always amazed and annoyed at the same time that there is a research field of "algorithms" in which you need to spend an enormous amount of time to understand if any new method has a slim chance of ever being run

04.02.2026 20:24 👍 8 🔁 1 💬 1 📌 0

Le confort est pas aussi bon mais je prenais souvent le bus entre les deux c'était pas aussi long que le train était cher 🫣

02.02.2026 10:07 👍 1 🔁 0 💬 1 📌 0

Le fameux "Les jeux vidéos sont un objet culturel" is lava

31.01.2026 13:06 👍 1 🔁 0 💬 1 📌 0

Early Christmas for MIP folks!

26.11.2025 13:04 👍 10 🔁 0 💬 0 📌 0

The SCIP 10 optimization suite has many new interesting features and is fully open source. For binaries and downloads, check www.scipopt.org/index.php#do...

25.11.2025 19:36 👍 16 🔁 5 💬 0 📌 0

* Scrambles through parents' house to find the last laptop where I installed a Matlab version *

22.11.2025 11:36 👍 1 🔁 0 💬 0 📌 0

I got hyped and then read the last line 😑

22.11.2025 11:13 👍 9 🔁 0 💬 3 📌 0

Probably my lazy french brain but some journal allowing delays in paper reviews for "exceptional personal circumstances (e.g. vacation)" gets my teeth grinding hard 😬
Of course with 3 vacation days per year I guess that falls into exceptional

20.11.2025 13:40 👍 4 🔁 0 💬 0 📌 0

Barely have a permanent position and already called old by the new generation, academia is brutal

19.11.2025 19:50 👍 5 🔁 0 💬 0 📌 0

Assumebly it was a very cool one, I was bummed to have a calendar conflict!

19.11.2025 19:32 👍 1 🔁 0 💬 0 📌 0

Do Massy and Marne-la-Vallée count or does it need to be a larger region?

19.11.2025 17:34 👍 1 🔁 0 💬 1 📌 0

Already failed just yesterday 🥲

19.11.2025 07:20 👍 3 🔁 0 💬 1 📌 0

Or call your models 1B with high sparsity?

14.11.2025 12:49 👍 1 🔁 0 💬 1 📌 0

For one paper sure, but the point is also the person learning the correct spelling no?

10.11.2025 19:58 👍 0 🔁 0 💬 0 📌 0

The only reason would be on the first paper of a grad student so they learn the errors they do (I just saw today the same word spelled incorrectly a bunch of times)

10.11.2025 19:51 👍 0 🔁 0 💬 1 📌 0

It's even the case for US faculty, the University salary typically doesn't cover summer (although it's typically covered by grants)

06.11.2025 09:07 👍 1 🔁 0 💬 1 📌 0

Isn't three days from the deadline when everything happens?

03.11.2025 17:38 👍 0 🔁 0 💬 1 📌 0

Bientôt les belles polaires bleues du LIG après la fusion?

03.11.2025 16:45 👍 0 🔁 0 💬 0 📌 0

Well not really, if I understand they get the manuscript at different stages (from early draft to final submission)

03.11.2025 15:54 👍 0 🔁 0 💬 2 📌 0