5 papers
Ergodic and Metastable Behavior of Stochastic Popularity Dynamics in Social Networks
Chiara Ravazzi, Paolo Frasca, Gaya Cocca
This paper studies popularity dynamics in social networks, where users' engagement with competing channels is driven by intrinsic content quality, social influence, and popularity…
Recommender Systems as Control Systems
Giulia De Pasquale, Sarah Dean, Paolo Frasca
We propose a control-theoretic interpretation of recommender systems and use this perspective to analyze how fairness interventions shape long-term system behavior. Fairness concer…
Optimal Policy Design for Repeated Decision-Making under Social Influence
Chiara Ravazzi, Valentina Breschi, Paolo Frasca +2
In this paper, we present a novel model to characterize individual tendencies in repeated decision-making scenarios, with the goal of designing model-based control strategies that…
A Coupled Friedkin-Johnsen Model of Popularity Dynamics in Social Media
Gaya Cocca, Paolo Frasca, Chiara Ravazzi
Popularity dynamics in social media depend on a complex interplay of social influence between users and popularity-based recommendations that are provided by the platforms. In this…
Optimal policy design for decision problems under social influence
Valentina Breschi, Chiara Ravazzi, Paolo Frasca +2
This paper focuses on describing the impact of policy actions on individuals' opinions in the presence of social and external influences toward proposing preliminary nudging strate…