Jesús Cerquides

Agentic Calibration of Grey-Box Simulation Models: An LLM-Driven Alternative

David Gómez-Guillén, Mireia Diaz, Josep Lluis Arcos, Jesús Cerquides

Calibration of grey-box simulation models is a constrained optimization problem in which model evaluations are expensive, the parameter space can be high-dimensional, and the search must respect plausibility constraints. Although the simulation code is fully available to the anal…Read more

Modeling link recommendations as a network growth mechanism and their impact on social contagion

Björn Komander, Jesús Cerquides, Jeffrey Chan, A. Alavi

TL;DR: It is shown that while simple contagions exhibit relatively modest shifts under most recommenders, complex contagions are highly sensitive to clustering-and homophily-based recommendations, thriving at moderate recommendation strengths but sharply diminishing under excessive recommendation strength.

Link recommendation algorithms significantly shape online social networks, influencing both their structural evolution and critical processes such as information and behavior spread. This paper investigates how these algorithms affect simple and complex contagion processes by mod…Read more