4 papers
Modeling financial transactions via random walks on temporal networks
Carolina E. Mattsson, Claudio Cellerini, Jaume Ojer +1
We model financial transactions as random walks on activity-driven temporal networks. By enforcing fund conservation, our framework analytically derives heavy-tailed distributions…
Modeling individual attention dynamics on online social media
Jaume Ojer, Filippo Radicchi, Santo Fortunato +2
In the attention economy, understanding how individuals manage limited attention is critical. We introduce a simple model describing the decay of a user's engagement when facing mu…
Charting multidimensional ideological polarization across demographic groups in the United States
Jaume Ojer, David Cárcamo, Romualdo Pastor-Satorras +1
Has ideological polarization actually increased in the last decades, or have voters simply sorted themselves into parties matching their ideology more closely? We present a novel m…
Social Network Heterogeneity Promotes Depolarization of Multidimensional Correlated Opinions
Jaume Ojer, Michele Starnini, Romualdo Pastor-Satorras
We propose the multidimensional social compass model, based on two competing key ingredients: DeGroot learning, driven by the social influence exerted across multiple topics, and t…