652 citations · 1.9k across the 68 of their papers we have counts for
79 papers
Peer Influence across Heterogeneous AI Models
Frida Nøhr Laustsen, Marie Haahr Petersen, Victoria Popa +4
When two AI agents disagree, who persuades whom? As multi-agent systems increasingly combine language models of different families and sizes, the answer can determine which judgmen…
Indirect tipping: a social attack surface in AI agent populations
Ariel Flint, Luca Maria Aiello, Sara M. Constantino +2
As generative AI agents are deployed at scale, safety will depend not only on technical safeguards and individual model design, but also on collective equilibria that determine how…
Billions of Sketches Reveal Hidden Cultural Variation in Human Concepts
Arianna Pera, Mauro Martino, Nima Dehmamy +3
Claims about the universality of human concepts have been predominantly assessed through linguistic similarity across languages and cultures. However, words are effective as commun…
AI Persuasive Framing in Collective Dilemmas
Anders Giovanni Møller, Alessia Galdeman, Arianna Pera +1
AI agents are promising tools that can act as flexible behavioral nudges to enhance human cooperation in addressing large-scale societal problems. However, evidence on whether AI a…
P1SCO: Social Dimensions from a Perspectivist Lens
Amanda Cercas Curry, Gianmarco de Francisci Morales, Luca Maria Aiello
We introduce P1SCO, a dataset of social media comments collected from three distinct platforms, annotated according to ten social dimensions to capture the diversity of social inte…
Learning Perspectivist Social Meaning via Demographic-Conditioned Fusion Embeddings
Amanda Cercas Curry, Lucio La Cava, Luca Maria Aiello +1
Social meaning in language is inherently perspectival, varying across annotator backgrounds, demographics, and ideological positions. However, most NLP systems collapse this variat…
Auditing the Reliability of Multimodal Generative Search
Erfan Samieyan Sahneh, Luca Maria Aiello
Multimodal Large Language Models (MLLMs) increasingly function as generative search systems that retrieve and synthesize answers from multimedia content, including YouTube videos.…
Twitter climate discourse as a signal of pro-environmental behaviors
Edoardo Maggioni, Diego Garlaschelli, Rossana Mastrandrea +1
Fostering coordinated pro-environmental behaviors at scale is a key challenge for climate mitigation. Individual actions only generate meaningful impact when they diffuse widely an…
Failure of contextual invariance in large language models
Sagar Kumar, Ariel Flint, Luca Maria Aiello +1
Standard evaluation practices assume that large language model (LLM) outputs are stable when prompts are embedded in contextually equivalent discourses. Here, we test this assumpti…
Overreliance on AI in Information-seeking from Video Content
Anders Giovanni Møller, Elisa Bassignana, Francesco Pierri +1
The ubiquity of multimedia content is reshaping online information spaces, particularly in social media environments. At the same time, search is being rapidly transformed by gener…
Measuring Narrative Polarization in Online Discourse
Jan Elfes, Marco Bastos, Luca Maria Aiello
Polarization research has demonstrated how people cluster in homogeneous groups with opposing opinions. However, this effect emerges not only through interaction between people, li…
Group size effects and collective misalignment in LLM multi-agent systems
Ariel Flint, Luca Maria Aiello, Romualdo Pastor-Satorras +1
Multi-agent systems of large language models (LLMs) are rapidly expanding across domains, introducing dynamics not captured by single-agent evaluations. Yet, existing work has most…
Machines in the Crowd? Measuring the Footprint of Machine-Generated Text on Reddit
Lucio La Cava, Luca Maria Aiello, Andrea Tagarelli
Generative Artificial Intelligence is reshaping online communication by enabling large-scale production of Machine-Generated Text (MGT) at low cost. While its presence is rapidly g…
Framing Unionization on Facebook: Communication around Representation Elections in the United States
Arianna Pera, Veronica Jude, Ceren Budak +1
Digital media have become central to how labor unions communicate, organize, and sustain collective action. Yet little is known about how unions' online discourse relates to concre…
Podcasts as a Medium for Participation in Collective Action: A Case Study of Black Lives Matter
Theodora Moldovan, Arianna Pera, Davide Vega +1
We study how participation in collective action is articulated in podcast discussions, using the Black Lives Matter (BLM) movement as a case study. While research on collective act…
The Trade-Off between Directness and Coverage in Transport Network Growth
Clément Sebastiao, Anastassia Vybornova, Ane Rahbek Vierø +2
Designing spatial networks, such as transport networks, commonly deals with the problem of how to best connect a set of locations through a set of links. In practice, it can be cru…
Reply to "Emergent LLM behaviors are observationally equivalent to data leakage"
Ariel Flint Ashery, Luca Maria Aiello, Andrea Baronchelli
A potential concern when simulating populations of large language models (LLMs) is data contamination, i.e. the possibility that training data may shape outcomes in unintended ways…
The Impact of Generative AI on Social Media: An Experimental Study
Anders Giovanni Møller, Daniel M. Romero, David Jurgens +1
Generative Artificial Intelligence (AI) tools are increasingly deployed across social media platforms, yet their implications for user behavior and experience remain understudied,…
The Experience of Running: Recommending Routes Using Sensory Mapping in Urban Environments
Katrin Hänsel, Luca Maria Aiello, Daniele Quercia +4
Depending on the route, runners may experience frustration, freedom, or fulfilment. However, finding routes that are conducive to the psychological experience of running remains an…
Modeling the Impact of Group Interactions on Climate-related Opinion Change in Reddit
Alessia Antelmi, Carmine Spagnuolo, Luca Maria Aiello
Opinion dynamics models describe the evolution of behavioral changes within social networks and are essential for informing strategies aimed at fostering positive collective change…
Mapping the Climate Change Landscape on TikTok
Alessia Galdeman, Luca Maria Aiello
Social media platforms shape climate action discourse. Mapping these online conversations is essential for effective communication strategies. TikTok's climate discussions are part…
Unmasking Conversational Bias in AI Multiagent Systems
Erica Coppolillo, Giuseppe Manco, Luca Maria Aiello
Detecting biases in the outputs produced by generative models is essential to reduce the potential risks associated with their application in critical settings. However, the majori…
Extracting Participation in Collective Action from Social Media
Arianna Pera, Luca Maria Aiello
Social media play a key role in mobilizing collective action, holding the potential for studying the pathways that lead individuals to actively engage in addressing global challeng…
Causal Modeling of Climate Activism on Reddit
Jacopo Lenti, Luca Maria Aiello, Corrado Monti +1
Climate activism is crucial in stimulating collective societal and behavioral change towards sustainable practices through political pressure. Although multiple factors contribute…