4 citations · 6 across the 10 of their papers we have counts for
11 papers
Should LLM Agents Decide in Social Simulations? Comparing Finite-State and LLM-Based Decision Policies
Alejandro Buitrago López, Javier Pastor-Galindo, José A. Ruipérez-Valiente
Large language models (LLMs) are increasingly used as decision-making components in social simulations. This introduces a methodological risk: the simulation may deviate from the e…
Execution and assessment of agentic influence operations in simulated social networks
Alejandro Buitrago López, David Montoro Aguilera, Javier Pastor-Galindo +1
This article evaluates AI-enabled influence operations in synthetic social networks through controlled simulations of narrative release, amplification, and counter-messaging. We me…
Evaluating the Realism of LLM-powered Social Agents: A Case Study of Reactions to Spanish Online News
Alejandro Buitrago López, Alberto Ortega Pastor, Javier Pastor-Galindo +1
LLM-powered social agents are increasingly used to simulate online social behavior, yet their realism remains difficult to validate. Existing work has largely relied on general-pur…
Agent-based simulation of online social networks and disinformation
Alejandro Buitrago López, Alberto Ortega Pastor, David Montoro Aguilera +4
Research on online social networks (OSNs) is often hindered by platform opacity, limited access to data, and ethical constraints. Simulation offer a valuable alternative, but exist…
Synthetic generation of online social networks through homophily
Alejandro Buitrago López, Javier Pastor-Galindo, José A. Ruipérez-Valiente
Online social networks (OSNs) have become increasingly relevant for studying social behavior and information diffusion. Nevertheless, they are limited by restricted access to real…
DISINFOX: an open-source threat exchange platform serving intelligence on disinformation and influence operations
Felipe Sánchez González, Javier Pastor-Galindo, José A. Ruipérez-Valiente
This paper introduces DISINFOX, an open-source threat intelligence exchange platform for the structured collection, management, and dissemination of disinformation incidents and in…
The Influence Operation Ontology (IOO)
Alejandro David Cayuela Tudela, Javier Pastor-Galindo, Pantaleone Nespoli +1
Ontologies provide a systematic framework for organizing and leveraging knowledge, enabling smarter and more effective decision-making. In order to advance in the capitalization an…
Toward interoperable representation and sharing of disinformation incidents in cyber threat intelligence
Felipe Sánchez González, Javier Pastor-Galindo, José A. Ruipérez-Valiente
A key countermeasure in cybersecurity has been the development of standardized computational protocols for modeling and sharing cyber threat intelligence (CTI) between organization…
Influence Operations in Social Networks
Javier Pastor-Galindo, Pantaleone Nespoli, José A. Ruipérez-Valiente +1
An important part of online activities are intended to control the public opinion and behavior, being considered currently a global threat. This article identifies and conceptualiz…
Exploring the topics, sentiments and hate speech in the Spanish information environment
ALEJANDRO BUITRAGO LOPEZ, Javier Pastor-Galindo, José Antonio Ruipérez-Valiente
In the digital era, the internet and social media have transformed communication but have also facilitated the spread of hate speech and disinformation, leading to radicalization,…
Frameworks, Modeling and Simulations of Misinformation and Disinformation: A Systematic Literature Review
Alejandro Buitrago López, Javier Pastor-Galindo, José A. Ruipérez-Valiente
The prevalence of misinformation and disinformation poses a significant challenge in today's digital landscape. That is why several methods and tools are proposed to analyze and un…