Sign in

Alain Barrat

@alainbarrat.bsky.social
2K followers 105 following 13 posts

Researcher. Works on complex systems, complex networks, interdisciplinary topics. Loves cats, travels, Japan. Foodie.

PostsRepliesMedia
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 02/07/2026
Out now our Joint Submission @apsphysics.aps.org ! w/ @martonkarsai.bsky.social and @alainbarrat.bsky.social How do adaptive behaviors affect higher-order contagion dynamics? doi.org/10.1103/1sgn... Is group adaptation more effective and less costly than pairwise one? doi.org/10.1103/7zyh... 1/3
151
Reposted by Alain Barrat
Adam Kucharski @adamjkucharski.bsky.social · 26/05/2026
Can AI spot AI-written stories? New post: kucharski.substack.com/p/can-ai-spo...
kucharski.substack.com
Can AI spot AI-written stories?
Why interpretation and mechanism are more powerful than simple pattern matching
1106
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 27/05/2026
How do group adaptive behaviors influence the emergence of polarization and consensus? Our work on the impact of group adaptation on opinion dynamics is now out in APS Open Science! 🚨 journals.aps.org/apsos/abstra... with Cosimo Agostinelli and @alainbarrat.bsky.social 1/2
journals.aps.org
Group adaptation drives opinion dynamics in higher-order networks
In modern interconnected societies, opinions and beliefs can quickly spread across large populations, giving rise to collective behaviors such as the adoption of social norms or polarization. The inte...
131
Alain Barrat @alainbarrat.bsky.social · 10/05/2026
PhD offer " Dynamics of collective motions of self propelled particles" at the Center for Theoretical Physics in Marseilles app.doctorat.gouv.fr/proposition?...
app.doctorat.gouv.fr
La plateforme nationale du doctorat
085
Reposted by Alain Barrat
Adam Kucharski @adamjkucharski.bsky.social · 06/05/2026
"Based on the dataset you shared, US and UK responses differ mainly in tone, intensity, and wording style, even though they express similar emotional states" New post on what happened when I got Copilot to do some data analysis: kucharski.substack.com/p/real-signa...
kucharski.substack.com
Real signals or artificial stereotypes?
Adventures with a cultural Copilot
15338142
Reposted by Alain Barrat
Steven R. Shaw, PhD @shawpsych.bsky.social · 29/04/2026
This mug should be awarded to every academic who served as department chair.
A coffee mug that says—I  accidentally became important at work and it’s ruining my life.
28713
Alain Barrat @alainbarrat.bsky.social · 22/04/2026
Interdisciplinary PhD offer in Marseille, starting Oct. 2026, on "Collective Problem Solving in Guinea Baboons: From Dyadic Interactions to Group Dynamics" Project description and application website: emploi.cnrs.fr/Offres/Docto... DM for more info on the position
emploi.cnrs.fr
Portail Emploi CNRS - Job offer - Collective Problem Solving in Guinea Baboons: From Dyadic Interactions to Group Dynamics (M/F)
0125
Reposted by Alain Barrat
Vittoria Colizza @vcolizza.bsky.social · 21/04/2026
What we choose to implement - and when - matters. Our work shows that proactive screening strategies can reduce transmission by ~40% vs reactive responses. A key lesson for preparedness. In PNAS Nexus: ow.ly/cLnu50YCrcn
ow.ly
Proactive vs. reactive COVID-19 screening in schools: Lessons from experimental protocols in France during the Delta and Omicron waves
Abstract. The COVID-19 pandemic prompted diverse policies to manage safety in schools, balancing transmission control with educational continuity. We evalu
0127
Reposted by Alain Barrat
Little Think Tank @littlethinktank.fr · 12/04/2026
[ 🇫🇷 FRANCE ] 🔸 La France accélère sa sortie de Microsoft dans l’administration, avec un abandon progressif de Windows au profit de Linux pour les postes de l’État et la migration de 80 000 agents de l’Assurance maladie vers Tchap, Visio et FranceTransfert.
19624
Reposted by Alain Barrat
RogueESR @rogueesr.bsky.social · 11/04/2026
#VeilleESR #ESR Les décisions budgétaires du gouvernement mettent la recherche en grave danger. Communiqué de la Coordination des responsables des instances (C3N) du CNRS. c3n-cn.fr/2026/04/10/b...
04638
Reposted by Alain Barrat
Vittoria Colizza @vcolizza.bsky.social · 10/03/2026
Two postdoc positions open at SUMOC (Sorbonne Université | INSERM), Paris, within the EPIcx lab. 🦠 Network epidemiology of healthcare-associated infections (ARCANE) 🧠 Coupled behavior–disease modeling (PREVIX) 2-y positions | Start June 2026 #epidemiology #networks #matrices
1913
Reposted by Alain Barrat
Giovanni Petri @lordgrilo.bsky.social · 26/02/2026
Interesting piece — raises important questions about what higher-order formalisms actually buy us. Half-jokingly, it would make great panel material @netsciconf.bsky.social à la Leipzig dispute :) (Also, first commentaries are already coming out: lnkd.in/d8_nunck)
1131
Reposted by Alain Barrat
Carl T. Bergstrom @carlbergstrom.com · 16/07/2025
1. Kevin Gross and I just posted a new science-of-science preprint. This one explores the looming peer review crisis. As many of you know, it's becoming significantly more difficult for journal editors to find scholars willing to serve as peer reviewers for submitted manuscripts.
arxiv.org
Will anyone review this paper? Screening, sorting, and the feedback cycles that imperil peer review
Scholarly publishing relies on peer review to identify the best science. Yet finding willing and qualified reviewers to evaluate manuscripts has become an increasingly challenging task, possibly even ...
22561221
Reposted by Alain Barrat
Carl T. Bergstrom @carlbergstrom.com · 24/02/2026
3. And here's an earlier thread based on the preprint that led to this paper. This thread explains what are up to in the paper and the logic behind the peer review meltdown cycle.
0408
Reposted by Alain Barrat
Carl T. Bergstrom @carlbergstrom.com · 24/02/2026
1. Kevin Gross and I have a new paper out today PLOS Biology. We used economic models based around screening games and the market for unpaid labor to highlight a meltdown cycle threatening peer review.
journals.plos.org
Screening, sorting, and the feedback cycles that imperil peer review
The process of peer review is vital to contemporary science, but is also under enormous strain. This study uses mathematical models to dissect the threats to the long-term viability of peer review, su...
7324131
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 24/02/2026
Now out our latest paper on adaptive opinion dynamics! 🚨 w/ Cosimo Agostinelli and @alainbarrat.bsky.social arxiv.org/abs/2602.19684 How do group adaptive behaviors influence the emergence of polarization and consensus? How does group adaptation influence the structure of interactions? 1/6 🧵👇
arxiv.org
Group adaptation drives opinion dynamics in higher-order networks
In modern interconnected societies, opinions and beliefs can quickly spread across large populations, giving rise to collective behaviors such as the adoption of social norms or polarization. These ph...
162
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 23/02/2026
Our work on higher-order dissimilarity measures is now out in Journal of Complex Networks! 📣 academic.oup.com/comnet/artic... with Cosimo Agostinelli and @alainbarrat.bsky.social 1/2
academic.oup.com
Higher-order dissimilarity measures for hypergraph comparison
Abstract. In recent years, networks with higher-order interactions have emerged as a powerful tool to model complex systems. Comparing these higher-order s
121
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 06/02/2026
Another new preprint on group adaptation! 📣 Great joint work w/ @martonkarsai.bsky.social and @alainbarrat.bsky.social! Can adaptive behaviors driven by group interactions be more effective and less costly than pairwise ones? How do their adaptive mechanisms differ? arxiv.org/abs/2602.05915 🧵 1/7
arxiv.org
Higher-order adaptive behaviors outperform pairwise strategies in mitigating contagion dynamics
When exposed to a contagion phenomenon, individuals may respond to the perceived risk of infection by adopting behavioral changes, aiming to reduce their exposure or their risk of infecting others. Th...
165
Reposted by Alain Barrat
Ciro Cattuto @ccattuto.bsky.social · 14/01/2026
Long overdue refresh of the SocioPatterns website! ✨ sociopatterns.org New content & datasets, and a chance to celebrate 17+ years of collabs, ~100 publications, 2000+ studies using our data. Thanks – more ahead! @alainbarrat.bsky.social @wouter-vdb.bsky.social @foolsdelight.bsky.social @isi.it
A grid of images showing SocioPatterns wearable devices, collaborators of the project, proximity graphs, and deployments in museums, hospitals, villages.
12417
Alain Barrat @alainbarrat.bsky.social · 12/01/2026
Our latest with @marco-mancastroppa.bsky.social and @martonkarsai.bsky.social ! Really proud of this one!
020
Reposted by Alain Barrat
CS2Italy @cs2italy.bsky.social · 07/01/2026
Submit your abstracts to CS2Italy by 👉 Jan 15 👈 Italian Conference on Computational Social Science to join us in Turin on May 19-21 We welcome abstract submissions on #computerscience #netsci #complexsystems #sociology #economics #politics #cognitivesci #psychology and more For more: cs2italy.org
02124
Reposted by Alain Barrat
Luca Maria Aiello @lajello.bsky.social · 05/01/2026
Computational Social Scientists in the Nordics, unite! 🇩🇰🇫🇮🇳🇴🇸🇪🇮🇸 The brand new Nordic Society for CSS welcomes all researchers and practitioners based in the Nordics. The Society will promote student mobility, events, and education initiatives. Join for free: nosocss.org/join.html.
28748
Reposted by Alain Barrat
CENTURI - Turing Centre for Living Systems @centuri-ls.bsky.social · 05/01/2026
The CENTURI PhD Call 2026 is still ongoing. Applications are open until the end of the month, on January 28th! Visit centuri-livingsystems.org/recruitment/ to apply. #PHD #CENTURI
centuri-livingsystems.org
Careers - Centuri Living Systems
Open positions available CENTURI Funded PhD Positions PHD2026_01 | Identifying evolutionary divergent functional gene modules in the human cerebellum development Supervisors: Baptiste LIBÉ-PHILIPPOT |...
11618
Reposted by Alain Barrat
Yanis Varoufakis @yanisvaroufakis.bsky.social · 03/01/2026
The Empire strikes back, not just to grab oil and other riches but, fundamentally, to hide its own weakness at home – and to prepare the ground for subjugating its own people, in Chicago, Portland, NYC etc. Meanwhile, a vassal Europe watches in silence... www.theguardian.com/world/live/2...
theguardian.com
Venezuelan president Maduro captured and flown out of country following ‘large scale’ US attack, Trump says – live
US president says ‘the United States of America has successfully carried out a large scale strike against Venezuela’
34459201
Reposted by Alain Barrat
Otto English @ottoenglish.bsky.social · 03/01/2026
Trump’s America is a rogue state. www.bbc.co.uk/news/live/c5...
bbc.co.uk
Venezuela latest: Explosions heard as smoke rises in Caracas
Footage appears to show smoke rising in multiple locations in the Venezuelan capital.
801080315
Reposted by Alain Barrat
Randall Munroe @xkcd.com · 11/12/2025
Hyperacute Interdynamics xkcd.com/3178/
4-panel comic. (1) [Teacher with medium-length hair talking to students at desks.] TEACHER: Modern physics rests on three main pillars: General relativity, which describes very massive objects, (2) TEACHER: quantum mechanics, which describes very small objects, (3) TEACHER: and hyperacute interdynamics, which describes objects 10-30cm in size and 200-700g in mass. (4) STUDENT [from off-panel]: That last one seems kind of limited. TEACHER: Yeah, but over its domain, it’s *really* precise. Absolutely *nails* squirrels and grapefruit. Someday we hope to unify it with the other two.
121879178
Reposted by Alain Barrat
Carl T. Bergstrom @carlbergstrom.com · 08/12/2025
7. Anyway, this question seems to be the standard question that people ask when you object to autonomous AI science. Julian's blog post is worth reading. "One of the panelists asked whether I would really prefer the joy of doing science to finding a cure for cancer and enabling immortality. "
611617
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 10/11/2025
The EATH model for realistic hypergraphs generation is now out in Physical Review E! 📣 journals.aps.org/pre/abstract... with @giuliacencetti.bsky.social and @alainbarrat.bsky.social 1/2
journals.aps.org
Emerging activity temporal hypergraph: A model for generating realistic time-varying hypergraphs
Time-varying group interactions constitute the building blocks of many complex systems. The framework of temporal hypergraphs makes it possible to represent them by taking into account the higher-orde...
172
Reposted by Alain Barrat
BeyondTheEdge @beyondtheedge.network · 21/10/2025
What are actually higher-order networks? The course by @beyondtheedge.network researcher Michael Schaub gives an introduction to the topic that BeyondTheEdge is all about. All course material is available at beyondtheedge.network/event/course...
beyondtheedge.network
Course: Higher-Order Interaction Networks
This course by BeyondTheEdge researcher Michale Schaub (RWTH) provides an introduction to Higher-Order Interaction Networks
042
Reposted by Alain Barrat
Network Science Society @netscisociety.bsky.social · 18/09/2025
In just about a week, the season's first NetSci Colloquium will happen. And we're starting with a bang . . . with none other than Iain Couzin talking about Collective Behavior in Animal Groups. September 24, 10 AM ET. Register here to get a Zoom link: iu.zoom.us/webinar/regi...
0915
Alain Barrat @alainbarrat.bsky.social · 09/09/2025
che tristezza...
130
Reposted by Alain Barrat
Andrea Brovelli @brovelli.bsky.social · 05/09/2025
⚠️JOB ANNOUNCEMENT⚠️ Postdoctoral Position in Computational Cognitive Neuroscience (Marseille) in collaboration with @alainbarrat.bsky.social. Join us to study higher-order brain interactions in causal learning using information theory and network science. More info www.fens.org/careers/job-...
fens.org
Postdoc in computational cognitive neuroscience - Federation of European Neuroscience Societies
11611
Reposted by Alain Barrat
Complexity Science Hub @csh.ac.at · 20/08/2025
🫵 Ready to tackle the world’s most complex challenges? The Complexity Science Hub is looking for #PhD candidates eager to apply large-scale data analysis, quantitative models, and complexity science to shed light on pressing global issues. 📅 Apply by 11 November 2025 ℹ️ csh.ac.at/education/gr...
064
Alain Barrat @alainbarrat.bsky.social · 18/08/2025
Global Sumud Flotilla - Global chuffed.org/project/1388...
chuffed.org
Global Sumud Flotilla - Global
As the genocide in Gaza gets worse by the day and the governments and institutions fail the Palestinian people, the free people of the world are trying their best to maintain solidarity and to create ...
140
Reposted by Alain Barrat
Nicolas Berrod @nicolasberrod.bsky.social · 20/07/2025
Désormais plus d'1 million de signatures contre la #LoiDuplomb, qualifiée d'"aberration scientifique, éthique, environnementale et sanitaire". Du jamais-vu sur le site de l'Assemblée, et peut-être l'organisation - avant tout symbolique - d'un débat à la rentrée. 1/5
76117
Reposted by Alain Barrat
Véronique Saada @verosaada.bsky.social · 18/07/2025
A lire, pour comprendre le très préoccupant précédent que pourrait constituer la position du Conseil de l Ordre des Médecins dans cette affaire, une institution dont la mission est de protéger la profession et la Santé(!) Re-re-re soutien au dr @damienbarraudmd.bsky.social
22610
Reposted by Alain Barrat
Marco Mancastroppa @marco-mancastroppa.bsky.social · 03/07/2025
New preprint out! 📣 “Emerging Activity Temporal Hypergraph (EATH), a model for generating realistic time-varying hypergraphs” with @giuliacencetti.bsky.social and @alainbarrat.bsky.social arxiv.org/abs/2507.01124 How can we generate realistic time-varying hypergraphs? 1/8 🧵⬇️
arxiv.org
Emerging Activity Temporal Hypergraph (EATH), a model for generating realistic time-varying hypergraphs
Time-varying group interactions constitute the building blocks of many complex systems. The framework of temporal hypergraphs makes it possible to represent them by taking into account the higher-orde...
162
Alain Barrat @alainbarrat.bsky.social · 19/06/2025
Updated application deadline: July 7, 2025!
001
Alain Barrat @alainbarrat.bsky.social · 03/06/2025
CNRS tenure track on "Dynamics and collective decisions" at the interface between statistical physics and social sciences. One of the potential hosting laboratories is the Centre de Physique Théorique in Marseille. Application deadline: July 14, 2025 emploi.cnrs.fr/Offres/CPJ/C...
emploi.cnrs.fr
Portail Emploi CNRS - Offre d'emploi - Dynamiques et décisions collectives M/F
037
Alain Barrat @alainbarrat.bsky.social · 19/05/2025
Junior Professorship position at the Centre de Physique Théorique, Marseille and Université de Toulon: "Non-linear dynamics and research on intelligent UAV ensembles" Deadline for applications: June 18. All details on the position and how to apply: www.cpt.univ-mrs.fr/~barrat/CPJ_...
cpt.univ-mrs.fr
CPJ position
023
Reposted by Alain Barrat
NetScience @netscience.bsky.social · 16/05/2025
Still a few spots available to attend Charting Complexity, a conference dedicated to exploring the power of Complex Systems Science (London 10-12 of June). Program: chartingcomplexity.webflow.io. If you like to attend, express your interest here: forms.gle/qFs4vuauYXwp...
1189
Reposted by Alain Barrat
Valérie Masson-Delmotte @valmasdel.bsky.social · 17/04/2025
www.lemonde.fr/sciences/art...
lemonde.fr
Accueillir les chercheurs américains en France , « une ambition louable, mais irréaliste »
TRIBUNE. L’universitaire Théo Besson rappelle, dans une tribune au « Monde », que le manque criant d’investissement ainsi que le niveau des salaires dans la recherche française interdisent de fantasme...
46218
Reposted by Alain Barrat
Nature @nature.com · 13/04/2025
Without clear protocols to catch errors, artificial intelligence’s growing role in science could do more harm than good go.nature.com/42nGQt6
go.nature.com
Why an overreliance on AI-driven modelling is bad for science
Nature - Without clear protocols to catch errors, artificial intelligence’s growing role in science could do more harm than good.
617849
Reposted by Alain Barrat
BeyondTheEdge @beyondtheedge.network · 06/04/2025
Upcoming Seminar – April 10, 14:00 CET 🧠 Collective Behaviours in Complex Systems: Ideas, Implementations, and Applications in Neurosciences and Beyond Speaker: Prof. Daniele Marinazzo (Ghent University) 📍Join via Zoom: link 🔗 More info: www.beyondtheedge.network/event/semina...
beyondtheedge.network
BeyondTheEdge Seminar: Daniele Marinazzo
Daniele Marinazzo (Ghent University) speaks in the BeyondTheEdge Seminar
022
Reposted by Alain Barrat
Timothy Snyder @timothysnyder.bsky.social · 24/03/2025
If you accept that non-citizens have no right to due process, you are accepting that citizens have no right to due process. All the government has to do is claim that you are not a citizen; without due process you have no chance to prove the contrary.
3252757410444
Reposted by Alain Barrat
Prof Christina Pagel @chrischirp.bsky.social · 28/03/2025
Colleagues are cancelling their US work trips. I worry that international colleagues in the US are at risk if they collaborate with us on certain topics. I've written a new post about the increasing danger of being a foreign scientist in the US. christinapagel.substack.com/p/trumps-att...
christinapagel.substack.com
Trump's attacks on universities get ever darker, with the shadows reaching our shores
The US has become a hostile and authoritarian state to foreign scientists and is choosing ideology over science.
321433564
Reposted by Alain Barrat
Nicolas Berrod @nicolasberrod.bsky.social · 26/03/2025
Ne pas prendre son ordinateur personnel, veiller à ses discussions en ligne... Le ministère de la Recherche relaie des règles drastiques pour éviter qu'un 2e chercheur ne soit refoulé des États-Unis : "Cela me désole, mais c’est justifié." @gaellombart www.leparisien.fr/sc...
leparisien.fr
Chercheur refoulé des États-Unis : le gouvernement français fait circuler des consignes drastiques - Le Parisien
À la suite de la mésaventure rencontrée récemment par un expert du spatial, les scientifiques sont invités à ne voyager qu’avec des appareil
43119
Alain Barrat @alainbarrat.bsky.social · 25/03/2025
Our first preprint within the @beyondtheedge.bsky.social training network!
051
Reposted by Alain Barrat
Carl T. Bergstrom @carlbergstrom.com · 21/03/2025
Yes, America has always done bad things. No shit. I was getting beaten by the cops for protesting those things while most of the qt-dunkers were still in diapers. My point: it used to be relatively safe for academics to travel to the US. It’s not anymore. Don’t do it.
231147110
Reposted by Alain Barrat
BeyondTheEdge @beyondtheedge.network · 19/03/2025
Join us next Tuesday for the next BeyondTheEdge seminar with Prof. Renaud Lambiotte (University of Oxford) 🔬 Title: Consensus and Random Walks on Higher-Order Networks 📅 Date & Time: March 25th, 2-3pm (CET) Link: www.beyondtheedge.network/event/semina...
beyondtheedge.network
BeyondTheEdge Seminar: Renaud Lambiotte
Renaud Lambiotte (University of Oxford) speaks in the BeyondTheEdge Seminar
044