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they can amplify uncooperative behavior, and iv) overall, the interplay between network topology and reputation shapes whether cooperation thrives or collapses. Kudos to my co-authors Chunpeng Du, Fei Fang, Alfonso de Miguel-Arribas, Yikang Lu, Yanan Wang, and Xin Pan. (4/4)

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ii) direct reputation matters the most: timely, first-hand information helps individuals identify good partners & avoid exploitative ones; iii) group structure plays a double role: in supportive environments, higher-order interactions reinforce cooperation; in competitive ones 3/

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Reputation isn't assigned to individuals alone, but to relationships -capturing both direct experience (“how you behaved with me”) & indirect information (“what others say about you”). We show that i) reputation can strongly boost cooperation, even in difficult social dilemmas 2/

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Yamir Moreno @ymoreno.bsky.social · 02/11/2025

New paper out, “Edge-based reputation promotes cooperation in simplicial complexes,” (arxiv.org/abs/2511.22234). Here, we take a step forward by introducing a new reputation mechanism that operates in group contexts, not just pairwise ones. (1/4)

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Cosnet Lab Nov 2025, welcoming its new members.

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Our findings underscore the crucial role of interlayer link directionality in shaping the emergent behavior of multiplex systems, with potential implications for the design and control of such systems. Kudos to my co-authors: Mateo Bouchet, Alex Tejedor and Xiangrong Wang. (4/4)

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In this regime, diffusion becomes dynamically arrested due to interlayer asymmetry, fragmenting the system into disconnected dynamical components & preventing it from converging to equilibrium. We also show that this transition can occur in synthetic and real-world systems 3/4

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Previous works showed that directionality within layers can enhance diffusion (e.g., superdiffusion & prime regime). Now, we demonstrate analytically and numerically that asymmetric interlayer links can both reproduce these regimes and, remarkably, lead to a novel phenomenon. 2/4

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Now out: "Directionality-induced jamming in multiplex networks" (arxiv.org/abs/2510.22634). We uncover a previously unreported diffusion regime, termed directionality-induced jamming, in multiplex networks that arises solely from the directionality of interlayer couplings. (1/4)

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Network Science Society @netscisociety.bsky.social · 18/09/2025

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Reposted by Yamir Moreno

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...

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Reposted by Yamir Moreno

Network Science Society @netscisociety.bsky.social · 14/09/2025

Channel your excitement about network science to engage and educate the public! The deadline for our annual educational video competition is two weeks away. bit.ly/nss-videos

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Reposted by Yamir Moreno

Alfonso de Miguel-Arribas @voidstrukt.bsky.social · 31/08/2025

This work took more time & effort than expected, but it is finally out for good! 🎉 Big thanks to my collaborators Carlos Gracia Lázaro & @ymoreno.bsky.social — always a real pleasure to work together. See the full article at: doi.org/10.1016/j.ch...

doi.org

Redirecting

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dr roger cremades @rogercre.bsky.social · 02/07/2025

Shape the Future of Food Systems at CCS 2025! How can complexity science unlock solutions for sustainable supply chains, food security & climate resilience? Submit a 1-2 page abstract + figure by 10 July 2025 is.gd/laMmRc @arifosch.bsky.social | @ymoreno.bsky.social | S. Baum @csh.ac.at

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Conference of Complex Systems 2025: Satellite Session Food Systems

This session at the Conference of Complex Systems in Siena, Italy, invites contributions that apply complexity science frameworks to understand and transform food systems.

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David Chavalarias @chavalarias.org · 26/05/2025

#CCSFrance2025 23/06 18:15: Public keynote conference from @ymoreno.bsky.social on " #SocialDilemmas via Generative Agent-Based Models" supported by the Fondation de Sciences de la Modélisation & CY Initiative Attend to discover the blend between #ABM and #LLM ➡️ conferences.css-fr.org?page_id=603

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Kleber Oliveira @kleber-ao.com · 29/04/2025

Now out: "Rumor propagation on hypergraphs" (arxiv.org/abs/2504.19305). We propose a higher-order rumour model incorporating a group-based annihilation mechanism. We run computational experiments to characterise the model's dynamics in synthetic and real systems... 1/5

arxiv.org

Rumor propagation on hypergraphs

The rapid spread of information and rumors through social media platforms, especially in group settings, motivates the need for more sophisticated models of rumor propagation. Traditional pairwise mod...

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Our framework demonstrates a scenario for facilitating the representability of deep neural networks through learning the underlying mechanism, which aims to steer applications for predicting complex behavior that learnable physical rules can drive. Kudos to my co-authors! 4/4

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We evaluate the performance of our framework in predicting typical critical behavior in spreading dynamics on various synthetic and real-world networks. Our results show that governing rules can be learned effectively and significantly improve prediction accuracy. 3/4

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More specifically, the learned governing rules further refine and guide the representative learning of neural networks from a series of dynamic graphs. This combination enables knowledge-based prediction for the critical behavior of dynamical networked systems 2/4

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