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
Alain Barrat
@alainbarrat.bsky.social
Researcher. Works on complex systems, complex networks, interdisciplinary topics. Loves cats, travels, Japan. Foodie.
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
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...
journals.aps.org
PhD offer " Dynamics of collective motions of self propelled particles" at the Center for Theoretical Physics in Marseilles app.doctorat.gouv.fr/proposition?...
La plateforme nationale du doctorat
app.doctorat.gouv.fr
"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...
Real signals or artificial stereotypes?
Adventures with a cultural Copilot
kucharski.substack.com
This mug should be awarded to every academic who served as department chair.
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
Portail Emploi CNRS - Job offer - Collective Problem Solving in Guinea Baboons: From Dyadic Interactions to Group Dynamics (M/F)
emploi.cnrs.fr
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
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
ow.ly
A study of 25 primary schools in France found that weekly screening of all students during the Delta and Omicron waves of the COVID-19 pandemic reduced school transmission by around 40% compared to reactive strategies used at other schools. In PNAS Nexus: https://ow.ly/jhii50YCrcm
[ 🇫🇷 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.
#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...
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
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)
New blog post: "Higher orders need higher standards" skewed.de/lab/posts/hi... I discuss our current work disentangling misconceptions around "higher-order" networks: arxiv.org/abs/2602.16937 Explainer thread for the paper here: bsky.app/profile/tiag...
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.
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 ...
arxiv.org
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.
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.
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.
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...
journals.plos.org
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 🧵👇
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...
arxiv.org
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
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
academic.oup.com
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
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...
arxiv.org
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
Our latest with @marco-mancastroppa.bsky.social and @martonkarsai.bsky.social ! Really proud of this one!
New preprint out! 📣 Great collaboration w/ @martonkarsai.bsky.social and @alainbarrat.bsky.social! How do adaptive behaviors, triggered by risk perception, affect higher-order contagion processes? What happens to the contagion dynamics and to the phase transition? arxiv.org/abs/2601.05801 🧵1/7
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
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.
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
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 |...
centuri-livingsystems.org
🔬 The CENTURI PhD Call 2026 is now open! Join an interdisciplinary community in Marseille at the interface of bio, physics, maths and computer science. Apply here: centuri-livingsystems.org/recruitment/ #PhD #CENTURI
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...
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’
theguardian.com
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. "
was at an event on AI for science yesterday, a panel discussion here at NeurIPS. The panelists discussed how they plan to replace humans at all levels in the scientific process. So I stood up and protested that what they are doing is evil. Full post: togelius.blogspot.com/2025/12/plea...
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
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...
journals.aps.org
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...
Course: Higher-Order Interaction Networks
This course by BeyondTheEdge researcher Michale Schaub (RWTH) provides an introduction to Higher-Order Interaction Networks
beyondtheedge.network
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...