activity
20232026
most citedThe effect of Collaborative-Filtering based Recommendation Algorithms on Opinion Polarization

22 citations · 25 across the 10 of their papers we have counts for

collaborators

10 papers

physics.soc-ph2026

Conformity Generates Collective Misalignment in AI Agents Societies

Giordano De Marzo, Alessandro Bellina, Claudio Castellano +2

Artificial intelligence safety research focuses on aligning individual language models with human values, yet deployed AI systems increasingly operate as interacting populations wh…

physics.soc-ph2026

The gold-rush effect: how innovation speeds up

Alessandro Bellina, Gabriele Di Bona, Giordano De Marzo +1

Innovation records often exhibit "hockey-stick" patterns of abrupt, near-singular growth at the collective level. However, this macroscopic explosiveness stands in stark contrast t…

cs.AI2026

Conformity and Social Impact on AI Agents

Alessandro Bellina, Giordano De Marzo, David Garcia

As AI agents increasingly operate in multi-agent environments, understanding their collective behavior becomes critical for predicting the dynamics of artificial societies. This st…

physics.soc-ph2025

Cost Functions in Economic Complexity

Alessandro Bellina, Paolo Buttà, Vito D. P. Servedio

Economic complexity algorithms aim to uncover the hidden capabilities that drive economic systems. Here, we present a fundamental reinterpretation of two of these algorithms, the E…

physics.soc-ph2025

Cognitive Limits Shape Language Statistics

Alessandro Bellina, Vito D. P. Servedio

Statistical regularities in human language have fascinated researchers for decades, suggesting deep underlying principles governing its evolution and information structuring for ef…

physics.soc-ph2024★ 1 cited

Modelling Singularities in Macroevolution

Alessandro Bellina, Giordano De Marzo, Vittorio Loreto

Macroevolutionary dynamics often display sudden, explosive surges, where systems remain relatively stable for extended periods before experiencing dramatic acceleration that freque…

physics.soc-ph2024

Economic Complexity in Mono-Partite Networks

Vito D. P. Servedio, Alessandro Bellina, Emanuele Calò +1

Initially designed to predict and explain the economic trajectories of countries, cities, and regions, economic complexity has been found applicable in diverse contexts such as eco…

cond-mat.stat-mech2024★ 2 cited

Time-Dependent Urn Models reproduce the full spectrum of novelties discovery

Alessandro Bellina, Giordano De Marzo, Vittorio Loreto

Systems driven by innovation, a pivotal force in human society, present various intriguing statistical regularities, from the Heaps' law to logarithmic scaling or somewhat differen…

physics.soc-ph2023

The dynamics of higher-order novelties

Gabriele Di Bona, Alessandro Bellina, Giordano De Marzo +3

Studying how we explore the world in search of novelties is key to understand the mechanisms that can lead to new discoveries. Previous studies analyzed novelties in various explor…

physics.soc-ph2023★ 22 cited

The effect of Collaborative-Filtering based Recommendation Algorithms on Opinion Polarization

Alessandro Bellina, Claudio Castellano, Paul Pineau +2

A central role in shaping the experience of users online is played by recommendation algorithms. On the one hand they help retrieving content that best suits users taste, but on th…