arXiv subjects

Jaime Pérez

Publications and source records attributed to Jaime Pérez.

4 recordsLinked to original sources

arXiv2023

Virtual Harassment, Real Understanding: Using a Serious Game and Bayesian Networks to Study Cyberbullying

Cyberbullying among minors is a pressing concern in our digital society, necessitating effective prevention and intervention strategies. Traditional data collection methods often intrude on privacy and yield limited insights. This study explores an innovative approach, employing a serious game - designed with purposes beyond entertainment - as a non-intrusive tool for data collection and education. In contrast to traditional correlation-based analyses, we propose a causality-based approach using Bayesian Networks to unravel complex relationships in the collected data and quantify result uncertainties. This robust analytical tool yields interpretable outcomes, enhances transparency in assumptions, and fosters open scientific discourse. Preliminary pilot studies with the serious game show promising results, surpassing the informative capacity of traditional demographic and psychological questionnaires, suggesting its potential as an alternative methodology. Additionally, we demonstrate how our approach facilitates the examination of risk profiles and the identification of intervention strategies to mitigate this cybercrime. We also address research limitations and potential enhancements, considering the noise and variability of data in social studies and video games. This research advances our understanding of cyberbullying and showcase the potential of serious games and causality-based approaches in studying complex social issues.

cs.CY↗

arXiv2023

Generation of Probabilistic Synthetic Data for Serious Games: A Case Study on Cyberbullying

Synthetic data generation has been a growing area of research in recent years. However, its potential applications in serious games have not been thoroughly explored. Advances in this field could anticipate data modelling and analysis, as well as speed up the development process. To try to fill this gap in the literature, we propose a simulator architecture for generating probabilistic synthetic data for serious games based on interactive narratives. This architecture is designed to be generic and modular so that it can be used by other researchers on similar problems. To simulate the interaction of synthetic players with questions, we use a cognitive testing model based on the Item Response Theory framework. We also show how probabilistic graphical models (in particular Bayesian networks) can be used to introduce expert knowledge and external data into the simulation. Finally, we apply the proposed architecture and methods in a use case of a serious game focused on cyberbullying. We perform Bayesian inference experiments using a hierarchical model to demonstrate the identifiability and robustness of the generated data.

cs.CY↗

arXiv2023

Serious Games and AI: Challenges and Opportunities for Computational Social Science

The video game industry plays an essential role in the entertainment sphere of our society. However, from Monopoly to Flight Simulators, serious games have also been appealing tools for learning a new language, conveying values, or training skills. Furthermore, the resurgence of Artificial Intelligence (AI) and data science in the last decade has created a unique opportunity since the amount of data collected through a game is immense, as is the amount of data needed to feed such AI algorithms. This paper aims to identify relevant research lines using Serious Games as a novel research tool, especially in Computational Social Sciences. To contextualize, we also conduct a (non-systematic) literature review of this field. We conclude that the synergy between games and data can foster the use of AI for good and open up new strategies to empower humanity and support social research with novel computational tools. We also discuss the challenges and new opportunities that arise from aspiring to such lofty goals.

cs.HC↗

arXiv2022

Data augmentation through multivariate scenario forecasting in Data Centers using Generative Adversarial Networks

The Cloud paradigm is at a critical point in which the existing energy-efficiency techniques are reaching a plateau, while the computing resources demand at Data Center facilities continues to increase exponentially. The main challenge in achieving a global energy efficiency strategy based on Artificial Intelligence is that we need massive amounts of data to feed the algorithms. This paper proposes a time-series data augmentation methodology based on synthetic scenario forecasting within the Data Center. For this purpose, we will implement a powerful generative algorithm: Generative Adversarial Networks (GANs). Specifically, our work combines the disciplines of GAN-based data augmentation and scenario forecasting, filling the gap in the generation of synthetic data in DCs. Furthermore, we propose a methodology to increase the variability and heterogeneity of the generated data by introducing on-demand anomalies without additional effort or expert knowledge. We also suggest the use of Kullback-Leibler Divergence and Mean Squared Error as new metrics in the validation of synthetic time series generation, as they provide a better overall comparison of multivariate data distributions. We validate our approach using real data collected in an operating Data Center, successfully generating synthetic data helpful for prediction and optimization models. Our research will help optimize the energy consumed in Data Centers, although the proposed methodology can be employed in any similar time-series-like problem.

cs.LG↗