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Posts by Onkar Sadekar

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physnet26 Welcome to Physisical Networks IV: a NetSci26 Satellite Hyatt Regency, Boston, Massachusetts, USA Room: TBA Date: June 2, 2026 (14:30 ~ 18:05) (Half-day program)

📢 Reminder: submissions are OPEN until April 30 for Physical Networks IV at NetSci2026 @netsciconf.bsky.social in Boston!

Topics: physical networks, spatial networks, metamaterials, connectomes & more.

Don’t miss your chance👇
sites.google.com/view/physnet26

#NetSci2026 #NetworkScience

2 weeks ago 2 2 0 0

arxiv.org/abs/2603.29064

2 weeks ago 3 0 0 0
Diagram with two panels. Left panel labeled "As structures" shows nested ellipses: DynHyp (outermost) contains DynHyp_focal, which contains DynGraph, which contains DynHyp_flat (dashed). DynHyp_NFS sits separately inside DynHyp. Right panel labeled "As trajectories" shows a single ellipse: DynGraph = DynHyp. The structural hierarchy on the left collapses to equivalence on the right.

Diagram with two panels. Left panel labeled "As structures" shows nested ellipses: DynHyp (outermost) contains DynHyp_focal, which contains DynGraph, which contains DynHyp_flat (dashed). DynHyp_NFS sits separately inside DynHyp. Right panel labeled "As trajectories" shows a single ellipse: DynGraph = DynHyp. The structural hierarchy on the left collapses to equivalence on the right.

New paper: "The Cost of Representing Higher-Order Dynamics on Graphs"

Can graphs represent group interactions? Yes, but graphs pay a parsimony cost when compared to using hypergraphs.

Addresses recent work by Peixoto et al., Moutuou, and Lacasa.

scroll.press/2026/graph-hypergraph-dynamics-cost

3 weeks ago 3 1 0 0
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How many teachers are enough? Zero?

Hirotaka Goto and I analyze the optimal allocation of dedicated teachers in a population.

@carlbergstrom.com

www.pnas.org/doi/10.1073/...

4 weeks ago 8 3 0 0
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Forty-five years of progress after a key paper about the evolution of cooperation A 1981 publication showed how cooperators can prevail over defectors, laying the foundation for how the evolution of cooperation between unrelated individuals is studied.

Cooperative behaviours that can be costly to the individual but beneficial to others were discussed in a key 1981 publication

go.nature.com/4c0jVdj

4 weeks ago 51 8 1 1
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The elections have closed, the votes have been counted, and the new members are... 🥁🥁

@amahury.bsky.social, @juantgarcas.bsky.social and @onkarsadekar.bsky.social! We are excited to work with you the coming year! 🎉

4 weeks ago 11 4 1 2
Postdoctoral Position in Epidemic Modelling | HUN-REN Rényi Intézet Inequalities in epidemic processes

🚀🚀 WE ARE HIRING!!! - Postdoc Position on Inequalities in Epidemic Processes 🚀🚀

Join as a postdoc the Network Epidemics Group at the HUN-REN Alfréd Rényi Institute of Mathematics (Budapest) to work on behavior driven epidemics.

www.renyi.hu/node/4925

1 month ago 9 4 0 0
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💸 Financial barriers often lock researchers from lower-income nations out of conferences.

Our open arms grant supports researchers from low and middle-income countries by providing financial aid to attend #CCS2026 ! 💰🤑

Spread the word! 🔁
👉More info: ccs26.cssociety.org#open-arms-gr...

1 month ago 5 4 0 0
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Y’all are very lucky — you still have time until March 4th to apply for the Complexity72h Workshop!

Don’t miss it — hurry up and get your application in 🚀

1 month ago 3 4 0 1

You've seen the projects, the tutors, the location, the program — and it's all 🔥.

You have zero excuses.

Apply before Feb 28th.

We'll know if you didn't. 👀

1 month ago 4 4 0 2
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Projects & tutors at a glance - Turnovers, synergy, and home advantage: Statistical signatures of success in the NBA

What drives momentum in NBA games? 🏀
Analyze play-by-play data on turnovers and quarter dynamics — more info here: www.complexitynextgen.org/complexity72...

2 months ago 2 1 0 0

Thank you to all my mentors, friends and collaborators who have made my life easier and exciting through the years! I couldn't have done this without you! 🥰🥰🥰

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Finally I have also applied as a tutor at @complexity72h.bsky.social with @fede7j.bsky.social for a project on analyzing patterns of success in NBA. Check out this and other exciting projects at www.complexitynextgen.org/complexity72... and apply if you are interested!

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2 months ago 1 1 1 0
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Higher-order interactions shape collective human behaviour Nature Human Behaviour - Battiston et al. discuss the emerging paradigm of higher-order network science and its applications to social systems and human dynamics.

Our perspective piece (and one of my last chapters of the PhD thesis) was published in Nature Human Behaviour. We review the literature on how group interactions shape collective behaviour and highlight cases where they are (or are not) important to consider. (link: rdcu.be/eU5jC)

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I have started as a Postdoctoral researcher in the Department of Evolutionary Anthropology at University of Zurich with Andrea Migliano and Lucio Vinicius. I will be analyzing social networks in hunter-gatherer populations and other great apes populations. It has been a fun few months so far!

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Many personal things have happened in the past few months and it is time to update the social media!

I received my PhD in Network Science at @ceu-dnds.bsky.social under the supervision of @fede7j.bsky.social after a wonderful 4 years in Vienna with amazing friends and colleagues!

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2 months ago 1 0 1 0
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The Structure of Psychopathology on Reddit: Network Analysis of Mental Health Communities in Relation to the ICD Diagnostic System Background: Social media platforms such as Reddit have become important spaces where individuals articulate their distress, seek support, and explore alternative ways of understanding mental health ou...

What does psychopathology look like from the perspective of people seeking support? Network analysis of Reddit communities vs diagnostic criteria.

Just out in @jmirpub.bsky.social

www.jmir.org/2026/1/e80958/
@sreblet.bsky.social @petrakn.bsky.social
@ceu-dnds.bsky.social @ulresearch.bsky.social

2 months ago 3 4 0 0
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🎓 Yesterday, January 21, 2026, Júlia Számely successfully defended her PhD dissertation on misinformation engagement, combining survey data with digital trace data to better understand who engages with misinformation online—and why.

Congratulations! 🎉📚

#WeAreCEU #NetworkScience #PhDLife

2 months ago 3 1 0 1
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Call for Participants - complexitynextgen Menu Call for Participants – Call For Scholarships Deadline: 28 Feb 2026 Are you a curious and motivated young researcher interested in complex systems? Are

The call for participants for Complexity72h is finally open! Apply by February 28 for the best collab ever!

Why???
✨ Amazing projects
👩‍🏫 Fantastic tutors
📍 A great location

👉 Apply now: www.complexitynextgen.org/complexity72...

Do you REALLY need anything else to be convinced?
We didn’t think so.

3 months ago 12 12 0 4

Fourth-year PhD student @claraeminente.bsky.social presented new work on two fronts: why people overestimate the size of racial minority groups in the US, and how intersectional homophily might reduce racial segregation in school friendship networks. 👏

#WeAreCEU #NetworkScience

4 months ago 2 1 0 0
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4th-year PhD candidate Helcio Felippe presented new work on using information theory to summarize network structure — including a measure of network & hypergraph similarity and a principled way to reduce higher-order representations. 👏

#NetworkScience

4 months ago 3 1 0 0
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On Dec 3, 4th-year PhD candidate Martí Medina-Hernández presented how ML and network science can reveal hidden patterns of corruption across Mexico, Bulgaria & Italy.

His work shows how data-driven methods can support stronger public-integrity policy.

#WeAreCEU #NetworkScience #CorruptionResearch

4 months ago 5 1 0 0
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On Dec 3, 4th-year PhD candidate @loreb92.bsky.social presented his research on group dynamics in human & animal systems.

His work shows how leadership shifts affect software teams, how bird groups form stable higher-order social cores, and how to detect such structures from data.

#NetworkScience

4 months ago 4 1 0 0
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3rd-year PhD student @bojanevkoski.bsky.social presented new work on mapping the structure of psychopathology using large-scale, heterogeneous data.

He compared insights from online support communities with clinical and registry data to uncover patterns that may inform future diagnostics.

4 months ago 6 1 0 0
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Structural Reducibility of Hypergraphs An information-theoretic framework finds and removes redundancies in a hypergraph representation of a network, allowing for more efficient analysis of higher-order elements.

Structural Reducibility of Hypergraphs link.aps.org/doi/10.1103/...

4 months ago 11 4 0 0
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CEU DNDS is looking for a new Assistant Professor to join us in #Vienna!

If you work in #NetworkScience or #ComputationalSocialScience, we’d love to hear from you.

👉 bit.ly/44lfXb4

4 months ago 2 8 0 1
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Yian Yin shows initial setbacks can make you stronger and more impactful in both sport and science
#ComplexNetworks2025

4 months ago 6 3 0 0
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Blueprint: The Evolutionary Origins of a Good Society Blueprint: The Evolutionary Origins of a Good Society [Christakis MD PhD, Nicholas A.] on Amazon.com. *FREE* shipping on qualifying offers. Blueprint: The Evolutionary Origins of a Good Society

But many social goods — cooperation, friendship, teaching — are not only positive, but also innate.

Discussed in Blueprint: The Evolutionary Origins of a Good Society — the book I have written of which I am proudest.

www.amazon.com/Blueprint-Ev...

4 months ago 7 2 0 0
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🔈 *Call for Participation* 🔈

Italian Conference on Computational Social Science – CS2Italy
May 19-21, 2026 in Torino, Italy

Premier venue for Computational Social Science in Italy: #sociology #polisci #economics #netsci #complexsystems ++

Submit your abstract by Jan 15: cs2italy.org

plz reshare

5 months ago 29 31 0 1
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📢 Keynotes unlocked: 8/12. Thrilled to have Andrea Migliano as a keynote speaker in Complenet’26! Join us to learn more about #anthropology and #networks!
🌐 Info & registration: complenet.weeblysite.com
🚨 Call for contributions open – submit by Nov 15, 2025!

6 months ago 9 6 0 0