7 papers
Rewarding Engagement and Personalization in Popularity-Based Rankings Amplifies Extremism and Polarization
Jacopo D'Ignazi, Emma Fraxanet Morales, Andreas Kaltenbrunner +5
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, Vicenç Gómez +2
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…
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…
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…
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…