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Laurent Hébert-Dufresne

@lhd.bsky.social

1.4K followers 140 following 21 posts

Professor at the Vermont Complex Systems Institute, External Prof at the Santa Fe Institute, Editor-in-Chief of npj Complexity. Likes networks, contagions, complexity, public health, animals, hockey, horror, & black metal Lab: https://joint-lab.github.io .. more

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Physics 33%

Mathematics 20%

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Reposted by Laurent Hébert‐Dufresne

𝙲𝚘𝚖𝚙𝚕𝚎𝙽𝚎𝚝 𝟸𝟶𝟸𝟼 @complenet.bsky.social · 11d

📢 Keynotes unlocked: 5/12. Thrilled to have Laurent Hébert-Dufresne @lhd.bsky.social as a keynote speaker in Complenet’26! Join us to learn more about #networks and #dynamics!
🌐 Info & registration: complenet.weeblysite.com
🚨 Call for contributions open – submit by Nov 15, 2025!

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Reposted by Laurent Hébert‐Dufresne

Binghamton Center of Complex Systems (CoCo) @binghamtoncoco.bsky.social · 14d

Next CoCo seminar on October 1st by Juniper Lovato from the University of Vermont!

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Reposted by Elizabeth Stokoe, Richard Shaw, Laurent Hébert‐Dufresne

Deena Mousa @deenamousa.com · 17d

In 2016 Geoffrey Hinton said “we should stop training radiologists now" since AI would soon be better at their jobs.

He was right: models have outperformed radiologists on benchmarks for ~a decade.

Yet radiology jobs are at record highs, with an average salary of $520k.

Why?

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Reposted by Mark J. Brandt, Laurent Hébert‐Dufresne

Santa Fe Institute @sfiscience.bsky.social · 20d

Final week to apply for the 2026 SFI Complexity Postdoctoral Fellowships

If you're an early-career scholar and passionate about collaborative, transdisciplinary research beyond traditional departments, this is the postdoc fellowship for you.

Deadline: Oct 1, 2025

Apply: santafe.edu/sfifellowship

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Laurent Hébert-Dufresne @lhd.bsky.social · 24d

The interactive story is by @jstonge.bsky.social and other friends: complex-stories.uvm.edu/friends-funn....

The paper is with friends from @vcsi.bsky.social @sfiscience.bsky.social and @unioflimerick.bsky.social.

complex-stories.uvm.edu

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Laurent Hébert-Dufresne @lhd.bsky.social · 24d

Our Physical Review Letter looks at how to get power-law distributions of cascade size without tuning or self-organization to criticality by allowing cascades to improve in quality and jump over gaps or dead-ends

TL;DR complex-stories.uvm.edu/friends-funn...

Paper: journals.aps.org/prl/abstract...

complex-stories.uvm.edu

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Reposted by Rebecca Sear, Paul E. Smaldino, Laurent Hébert‐Dufresne

Tim Waring @twaring.bsky.social · 27d

🚨 Excited to share a new paper 📃, years in the making, with Zach Wood.

We propose that human evolution is characterized as an Evolutionary Transition in Inheritance and Individuality (ETII).

Explainer and OA paper below:

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Reposted by Laurent Hébert‐Dufresne

𝙲𝚘𝚖𝚙𝚕𝚎𝙽𝚎𝚝 𝟸𝟶𝟸𝟼 @complenet.bsky.social · 27d

📢 Excited to announce CompleNet 2026! Join us to share your network science research in a highly interdisciplinary conference!

🗓️ 4–8 May 2026 | 📍 Zaragoza, Spain 🇪🇸
🚨 Call for contributions open – submit by Nov 15, 2025!
🌐 Info & registration: complenet.weeblysite.com

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Reposted by Laurent Hébert‐Dufresne

Hiroki Sayama @hirokisayama.bsky.social · Sep 5

Done! It was a super fun week of complexity. Huge thanks to the organizers! And see you all next year in Binghamton!!
#CCS2025 #CCS2026
youtu.be/kIK3DleA-Us

CCS 2026 | Binghamton, N.Y., USA

YouTube video by Watson College at Binghamton University

youtu.be

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Reposted by Laurent Hébert‐Dufresne

Alejandro Espinosa-Rada @aespinosarada.bsky.social · Sep 4

Excited to announce the Social Network Summer School 🇨🇱!
📅 Jan 12–16, 2026 | Santiago, Chile
Keynotes: @estebanmoro.bsky.social & @krivitsky.net

@insna.bsky.social & @netscisociety.bsky.social
Apply by Oct 5 👉 snlab-cl.github.io/summerschool/

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Reposted by Laurent Hébert‐Dufresne

João Franco @okfranco.bsky.social · Sep 1

🎓 I've joined the PhD in Complex Systems & Data Science at @vcsi.bsky.social to work w/ @lhd.bsky.social & @juniperlov.bsky.social to explore social (complex) dynamics

🔬 Huge thanks to @joanagsa.bsky.social & Lília Perfeito for helping me get ready for this chapter

🚀 Excited for this next step!

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Reposted by David Lazer

Laurent Hébert-Dufresne @lhd.bsky.social · Sep 1

Happy to be in beautiful Siena for the Conference on Complex Systems. We are partnering with the organizers for a Collection in npj Complexity on "The Evolving Landscape of Complex Systems." #ccs2025

I'm excited to meet everyone to talk complexity!

Submit your work: www.nature.com/collections/...

The beautiful venue of CCS 2025 in Siena, Italy.

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Reposted by Laurent Hébert‐Dufresne

Vermont Complex Systems Institute @vcsi.bsky.social · Aug 29

We love this research profile on Vermont Complex Systems Institute core faculty @juniperlov.bsky.social 🐙 www.linkedin.com/posts/uvm-vc...

Juniper Lovato is a Vermont Complex Systems Institute core faculty member and an outstanding thinker who has been critical to many of our most significant research efforts. Learn about what makes her…...

www.linkedin.com

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Reposted by Laurent Hébert‐Dufresne

Santa Fe Institute @sfiscience.bsky.social · Aug 21

It might start as a joke, belief, or rumor, easy to dismiss. But then it twists, builds momentum, and spreads like wildfire. Why do some ideas die out while others go viral?

A new study by researchers from the University of Vermont and the Santa Fe Institute offers answers: santafe.edu/news

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Brendan Nyhan @brendannyhan.bsky.social · Aug 21

New job ad: Assistant Professor of Quantitative Social Science, Dartmouth College apply.interfolio.com/172357

Please share with your networks. I am the search chair and happy to answer questions!

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Reposted by Mark Lubell, Laurent Hébert‐Dufresne

Ian Hall @ianhall.bsky.social · Aug 21

A survey of >99k people (110 regions) shows the Global North has denser belief networks, while the Global South has looser connections

Inconsistency appears in areas (eg Mid East), where support for fossil fuels conflicts with support for renewables/climate policies

www.nature.com/articles/s41...

Variations in climate change belief systems across 110 geographic areas - Nature Climate Change

Climate beliefs do not exist in isolation but form an interconnected network known as a belief system. This study analyses the density and inconsistency of belief systems and their associations with informational and socioeconomic factors to inform effective climate change communication strategies.

www.nature.com

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Reposted by Richard McElreath, Rebecca Sear, Laurent Hébert‐Dufresne

Daniel Redhead @danielredhead.bsky.social · Aug 4

🐒🕸️ New preprint! Confused about how to model animal social networks?

ASNA can be confusing—but also full of opportunity. We break down 5 common misunderstandings in animal social network analysis and share solutions from behavioural ecology, anthro, stats, & network science. Hope it helps!

A 🧵

Five misunderstandings in animal social network analysis

ecoevorxiv.org

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Reposted by Suresh Venkatasubramanian, Scott C. Doney, Brian J. Enquist , and 4 more Suresh Venkatasubramanian, Scott C. Doney, Brian J. Enquist, Nicholas A. Christakis, Garry Peterson, Juan Rocha, Laurent Hébert‐Dufresne

Santa Fe Institute @sfiscience.bsky.social · Jul 28

Applications are open for SFI's 2026 Complexity Postdoctoral Fellowships

If you’ve recently earned a Ph.D. in any scientific field and want to pursue independent, transdisciplinary research, consider applying.

Deadline: October 1, 2025
Apply here: santafe.edu/sfifellowship

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Reposted by Laurent Hébert‐Dufresne

Society for the Improvement of Psychological Science (SIPS) @improvingpsych.org · Jul 24

We are very pleased to announce the 2025 Commendations for the Society for the Improvement of Psychological Science! Join us in celebrating the exceptional projects that have revolutionized the field of psychological science.
buff.ly/rzTeLYL

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Reposted by Laurent Hébert‐Dufresne

International Conference on Computational Social Science @ic2s2.bsky.social · Jul 24

That’s a wrap on IC2S2’25! 🎉 Thank you for an unforgettable week of ideas and discussions. Congratulations to our award winners, and safe travels home. Mark your calendars: #ic2s2 ’ 26 heads to Burlington, Vermont, in the US. See you next year!

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Reposted by Laurent Hébert‐Dufresne

TLZ @fettfanlange.bsky.social · Jul 19

Complexity science indirectly discovers democratic municipalism as an optimal solution to democratic governance. cool work by the folks at @vcsi.bsky.social www.nature.com/articles/s44... may be of interest @jamesstout.bsky.social @miawong.bsky.social

Governance as a complex, networked, democratic, satisfiability problem - npj Complexity

npj Complexity - Governance as a complex, networked, democratic, satisfiability problem

www.nature.com

Reposted by Laurent Hébert‐Dufresne

Conference on Complex Systems @css-conference.bsky.social · Jul 21

🌐 We are glad to host 27 satellites at #CCS25, covering diverse and cutting-edge topics in complex systems science!
🔗Explore the full list here:
ccs25.cssociety.org/satellites-l...

Satellites List – Conference on Complex Systems 2025

ccs25.cssociety.org

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Reposted by Laurent Hébert‐Dufresne

Vermont Complex Systems Institute @vcsi.bsky.social · Jul 18

Hello, Bluesky! We're excited to relocate here from X. You can also follow us on LinkedIn: www.linkedin.com/posts/uvm-vc...

What is SOCKS? | Vermont Complex Systems Institute

What is SOCKS? We'd love to tell you more! Thanks to the Vermont EPSCoR team, we'll be sharing a series of videos about this National Science Foundation (NSF) funded project that is building c...

www.linkedin.com

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Laurent Hébert-Dufresne @lhd.bsky.social · Jul 7

There's amazing work on group effects in higher-order networks, but not a lot of connections to social ontology, collective action, and group selection.

Led by @jstonge.bsky.social with expert guidance of @rharp.bsky.social we reviewed and formalized these connections.

arxiv.org/abs/2507.02758

Defining and classifying models of groups: The social ontology of higher-order networks

In complex systems research, the study of higher-order interactions has exploded in recent years. Researchers have formalized various types of group interactions, such as public goods games, biologica...

arxiv.org

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Reposted by Laurent Hébert‐Dufresne

NetScience @netscience.bsky.social · Jul 6

Defining and classifying models of groups: The social ontology of higher-order networks arxiv.org/abs/2507.02758

Defining and classifying models of groups: The social ontology of higher-order networks

arxiv.org

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Reposted by Laurent Hébert‐Dufresne

Santa Fe Institute @sfiscience.bsky.social · Jun 17

A common narrative in the U.S. links a city’s political leanings with its level of racial bias. These assumptions are often too simple, suggests a new study by SFI's Andrew Stier and Brandon Ogbunu. Nearly 40% of cities analyzed do not conform to partisan expectations.

santafe.edu/news-center/...

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Reposted by Laurent Hébert‐Dufresne

C. Brandon Ogbunu @cbo.bsky.social · Jun 12

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In a comment published in NPJ Complexity, SFI @sfiscience.bsky.social post-doc Andrew Stier and I ask a critical question:

"What is the relationship between voting patterns in American cities and implicit racial bias?"

We find that the story is...complicated.
www.nature.com/articles/s44...

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Laurent Hébert-Dufresne @lhd.bsky.social · May 19

New work led by the great @giulioburgio.bsky.social.

A detailed math model to track correlations within and across groups in higher-order networks.

We also get to study adaptive hypergraphs, which self-organize as sparse or dense graphs to control a contagion.

www.nature.com/articles/s41...

Characteristic scales and adaptation in higher-order contagions - Nature Communications

People organize in groups and contagions spread across them, meanwhile groups can evolve as people adaptively move in response to the spread. Here, authors show how keeping key dynamical correlations ...

www.nature.com

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Laurent Hébert-Dufresne @lhd.bsky.social · May 15

Today is the deadline to let us know of your interest to participate in the Complex Networks Winter Workshop 2025.

Come join us for a week of science in a winter wonderland: old monastery, Québec city, the week before Christmas.

vermontcomplexsystems.org/events/cnww/

Complex Networks Winter Workshop

vermontcomplexsystems.org

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Reposted by Laurent Hébert‐Dufresne

Nicholas Landry @nwlandry.bsky.social · May 9

For those of you at #SIAMDS25 in Denver, come check out @lhd.bsky.social and my Minitutorial! We'll be covering higher-order networks: when to use them, how to model dynamics with them, and how to implement with open-source software. Don't miss it! Details here: meetings.siam.org/sess/dsp_pro...

Conference Program Online

meetings.siam.org

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