71 citations · 415 across the 29 of their papers we have counts for
31 papers
Uncertainty-Aware Estimation of Mis/Disinformation Prevalence on Social Media
Ishari Amarasinghe, Salvatore Romano, Jacopo Amidei +2
Estimation of mis/disinformation prevalence in social media is crucial for designing mitigation strategies to limit its impact. Yet, such estimations are subject to several uncerta…
The Personality Trap: How LLMs Embed Bias When Generating Human-Like Personas
Jacopo Amidei, Gregorio Ferreira, Mario Muñoz Serrano +2
This paper examines biases in large language models (LLMs) when generating synthetic populations from responses to personality questionnaires. Using five LLMs, we first assess the…
Rewarding Engagement and Personalization in Popularity-Based Rankings Amplifies Extremism and Polarization
Jacopo D'Ignazi, Emma Fraxanet Morales, Andreas Kaltenbrunner +3
Despite extensive research, the mechanisms through which online platforms shape extremism and polarization remain poorly understood. We identify and test a mechanism, grounded in e…
A Decade of News Forum Interactions: Threaded Conversations, Signed Votes, and Topical Tags
Emma Fraxanet, Vicenç Gómez, Andreas Kaltenbrunner +1
We present a large-scale, longitudinal dataset capturing user activity on the online platform of DerStandard, a major Austrian newspaper. The dataset spans ten years (2013-2022) an…
A Simple and Explainable Model for Park-and-Ride Car Park Occupancy Prediction
Andreas Kaltenbrunner, Josep Ferrer, David Moreno +1
In a scenario of growing usage of park-and-ride facilities, understanding and predicting car park occupancy is becoming increasingly important. This study presents a model that eff…
Language-Agnostic Modeling of Source Reliability on Wikipedia
Jacopo D'Ignazi, Andreas Kaltenbrunner, Yelena Mejova +4
Over the last few years, verifying the credibility of information sources has become a fundamental need to combat disinformation. Here, we present a language-agnostic model designe…