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Thomas Louf

@tlouf

Assistant prof in applied maths @uc3m.es ๐Ÿ”— https://tlouf.github.io ๐Ÿง‘โ€๐Ÿ’ป https://github.com/TLouf ๐Ÿ˜ https://fosstodon.org/@tlouf

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13.11.2024
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Latest posts by Thomas Louf @tlouf

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Elections Young Researchers of the Complex Systems Society

๐Ÿšจ yrCSS Advisory Board Elections are Open! ๐Ÿšจ
Be part of shaping the future of yrCSS! Access the Ballot platform in your CSS account profile and apply now to become a member ๐Ÿ—ณ๏ธ Applications accepted until Feb 21th. More info โžก๏ธ yrcss.cssociety.org/elections/

10.02.2026 15:01 ๐Ÿ‘ 4 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 2

But I thought social scientists could just study LLMs now.

18.11.2025 21:37 ๐Ÿ‘ 173 ๐Ÿ” 30 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 0

Are you a young researcher in Complex Systems?

Do you need financial support to present your research at a Complex Systems conference/Workshop?
Or to visit another researcher and collaborate on an innovative project?

Our grants are back!

27.10.2025 12:25 ๐Ÿ‘ 9 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Universal Roughness and the Dynamics of Urban Expansion Urban sprawl reshapes cities, yet its quantitative laws remain elusive. Analyzing built-up expansion in 19 cities (1985--2015) with tools from surface growth physics in radial geometry, we reveal anis...

Our work on the dynamics of urban expansion just got published in the Physical Review Letters ! journals.aps.org/prl/abstract...

31.10.2025 14:26 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
The UC3M campus

The UC3M campus

Super happy to share that, after two great years @chub-fbk.bsky.social, I've just joined @uc3m.es and the GISC as an assistant prof in applied maths :)))

15.09.2025 07:39 ๐Ÿ‘ 19 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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@abbasrizi.bsky.social on stage talking about homophily within and across groups #CCS2025

04.09.2025 08:33 ๐Ÿ‘ 9 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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The satellite on Computational Social Science is starting in room 13. @lajello.bsky.social is our first speaker. Join us! #ccs2025

04.09.2025 07:49 ๐Ÿ‘ 6 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Wide coverage of social media and disinformation analysis yesterday from our lab at the @css-conference.bsky.social, with four talks presenting our works associate to the European projects #AI4TRUST #AICODE_EU #HATEDEMICS

03.09.2025 17:19 ๐Ÿ‘ 7 ๐Ÿ” 6 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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Finishing the social media session, @tlouf.bsky.social explores Telegram as a weighted, directed temporal network. His methodology reveals clustering, burstiness, and assortativity, all of them phenomena that are relevant when building reliable agent-based models.

#CCS2025

02.09.2025 15:31 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Great energy at the poster session today! It was a pleasure to be part of it presenting our work "How to design a collection strategy for monitoring disinformation and hate speech in Telegram".

Excited for round two tomorrow โ€“ see you all there! โ˜€๏ธ

01.09.2025 22:08 ๐Ÿ‘ 11 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐Ÿ“ฃ ๐—Ÿ๐—ฎ๐˜€๐˜ ๐—ธ๐—ฒ๐˜†๐—ป๐—ผ๐˜๐—ฒ ๐—ฟ๐—ฒ๐˜ƒ๐—ฒ๐—ฎ๐—น!

We're honored to host Cristian Candia as a keynote speaker at our #ComputationalSocialScience Satellite, taking place during #CCS2025!

๐Ÿ“Siena, Italy
๐Ÿ“…Sep 4

๐Ÿ’กFuel your curiosity with science you'll remember!

30.07.2025 16:31 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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๐Ÿ“Œ ๐—ฆ๐—ฎ๐˜ƒ๐—ฒ ๐˜๐—ต๐—ฒ ๐—ฑ๐—ฎ๐˜๐—ฒ!

We're proud to welcome Kyriaki Kalimeri @kyriakikalimeri.bsky.social as a keynote speaker at our #ComputationalSocialScience Satellite, taking place during #CCS2025!

๐Ÿ“Siena, Italy
๐Ÿ“… Sep 4

๐Ÿ’กDiscover how data can drive good, and stay for the insight!

17.07.2025 17:21 ๐Ÿ‘ 8 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Socio-economic and linguistic boundaries Hosted on the Open Science Framework

We'll gladly take any feedback on the work, don't hesitate to reach out! ๐Ÿค—

As always, code and aggregated data openly available ๐Ÿ‘
osf.io/n6j8g/

11.07.2025 09:12 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

So with such simple mechanisms controlled by just 3 parameters, we're able to quite nicely reproduce the effect we observed: socioeconomic mixing smooths out this dialectal difference between classes.

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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We show analytically that increased mixing does make different classes converge on their dialect usage. And since it's an ABM, we can simulate agents moving around according to actual mobility patterns, and again we found one of these nice straight lines we all love ๐Ÿซถ

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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That's why we proposed some basic mechanisms that could explain this, in the form of an agent-based model. Use of a variety depends on how prestigious the standard form is (s), how much the poorer class prefers non-standard (q1), and how much the richer prefer standard (q2).

11.07.2025 09:12 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

What this plot shows is that the more different classes mix with one another (low assortativity), the less their use of non-standard language will depend on their class of origin. This is really remarkable (to us at least!), so we wanted to understand further.

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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This was really surprising to us, so we had to understand where these differences could be coming from! That's when we thought of looking at how much people of different classes mix in each of these cities. And what we found is this very nice line ๐Ÿ”ฝ

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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This gives a nice proxy for the tendency of Twitter users to use non-standard English. And what we found were smaller correlations than we expected, but more crucially, widely different ones from one metropolitan area of England to the other.

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Free AI Grammar Checker - LanguageTool Instantly check grammar, punctuation, and spelling errors with LanguageTool's AI-powered grammar checker. Enhance your writing in over 30 languages with ease.

The question that triggered this work was: how inter-dependent are socioeconomic status and deviations from standard language?

One cool aspect of the method is that we used a local version of LanguageTool to compute the frequencies of deviations from standard grammar in tweets.
languagetool.org

11.07.2025 09:12 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Our latest work with @martonkarsai.bsky.social, David Sรกnchez and Josรฉ Ramasco just got published! (and open access)

Here's a short thread to give you our main results โฌ

11.07.2025 09:12 ๐Ÿ‘ 19 ๐Ÿ” 4 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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โญ ๐— ๐—ฎ๐—ฟ๐—ธ ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ฐ๐—ฎ๐—น๐—ฒ๐—ป๐—ฑ๐—ฎ๐—ฟ๐˜€!

We're delighted to share that Luca Aiello @lajello.bsky.social will be joining us as a keynote speaker at our #ComputationalSocialScience Satellite, taking place during #CCS2025!

๐Ÿ“Siena, Italy
๐Ÿ“… Sep 4

๐Ÿ’กCome curious, leave inspired.

10.07.2025 16:00 ๐Ÿ‘ 18 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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๐ŸŽค ๐—˜๐˜…๐—ฐ๐—ถ๐˜๐—ถ๐—ป๐—ด ๐—ก๐—ฒ๐˜„๐˜€!

We're thrilled to announce that Cesar Hidalgo @cesifoti.bsky.social will be joining us as a keynote speaker at our #ComputationalSocialScience Satellite, taking place during #CCS2025!

๐Ÿ“Siena, Italy

๐Ÿ“… Sep 4

๐Ÿ’กCome for the science, stay for the inspiration!

03.07.2025 15:41 ๐Ÿ‘ 6 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

๐ŸšจIf you're around Paris come to see @tlouf.bsky.social talking today about the structure and dynamics of information flow on Telegram at @sunbelt2025paris.bsky.social and @css-fr.bsky.social

25.06.2025 09:32 ๐Ÿ‘ 2 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Universal roughness and the dynamics of urban expansion We present a new approach to quantify urban sprawl using tools from surface growth physics. Analyzing built-up area expansion in 19 cities (1985-2015), we uncover anisotropic growth with branch-like e...

How do cities expand?
Using surface growth physics, we found a unique exponent governing their local geometry. Instead, their dynamics range from smooth diffusion to abrupt coalescence, with demographic pressure driving where each city lands on that spectrum.

arxiv.org/abs/2506.10656

16.06.2025 17:02 ๐Ÿ‘ 10 ๐Ÿ” 4 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1

๐Ÿšจ Deadline is this Friday (23:59 CET), remember to submit your works to join us in Siena!

16.06.2025 10:18 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Summer vibes in Trento โ˜€๏ธ

perfect for a CHuB-day at the Caldonazzo lake โ›ฐ๏ธ๐Ÿ–๏ธ

@ricgallotti.bsky.social @luzuzek.bsky.social @tlouf.bsky.social @andreaguizzo.bsky.social @ulyssemarquis.bsky.social

13.06.2025 16:24 ๐Ÿ‘ 6 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

๐ŸŒ Are you a young researcher heading to #CCS2025 in Siena?
Join us a few days earlier and enjoy the Warm-Up by yrCSS on Aug 29โ€“30, two days of fun, networking & activities designed for young researchers!
๐Ÿ›๏ธ Optional accommodation
๐Ÿ“ Limited spots!
๐Ÿ’ถ Registration: 55โ‚ฌ
๐Ÿ”— Apply: forms.gle/DxatcCQt4LBk...

12.05.2025 14:06 ๐Ÿ‘ 9 ๐Ÿ” 8 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 5
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SECS Young Researchers of the Complex Systems Society

๐Ÿ“ข Early-Career researchers! Did your abstract for @css-conference.bsky.social get accepted, but you're struggling to find funding? โœจApply for our special CCS - SECS grants!โœจ Applications are open until June 30th. ๐Ÿ’ธ

yrcss.cssociety.org/grants/secs/

08.05.2025 13:17 ๐Ÿ‘ 2 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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CSS@CCS About

The Computational Social Science satellite of the @css-conference.bsky.social is back for its 13th edition.

๐Ÿ“… Submit your work by June 20th for a chance to present it in a talk at the event!

๐Ÿ‘‡ More details on our page ๐Ÿ‘‡

๐Ÿ›ฐ๏ธ sites.google.com/view/css-ccs

05.05.2025 08:34 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1