Fabio Scielzo-Ortiz

Fabio Scielzo-Ortiz

I am a researcher at the UC3M-Santander Big Data Institute. I obtained my Bachelor's degree in Statistics and Business from Universidad Carlos III de Madrid (UC3M) in 2023 and a Master's degree in Big Data from the UC3M in 2024. I am a PhD student in Statistics for Data Science at UC3M. At IBiDat, I work on Data Science and Applied Research in both business and academic projects.

Quantifying Global Polarization: Detection and Analysis of Opinion Groups on the Gaza Conflict at International Level Based on Reddit Data

Published in Submitted for publication at Journal of Computational Social Sciences (Springer), 2027

This paper presents a robust computational framework to map global public opinion and ideological polarization on the Gaza conflict, using Reddit data. The pipeline integrates large-scale data engineering, LLM-based zero-shot feature extraction with human-in-the-loop validation, and a robust mixed-data clustering framework, uncovering a bidimensional structure of digital polarization: a horizontal ideological axis (pro-Israel vs. pro-Palestine) and a vertical deliberative-affective axis (analytical/emotional vs. hostile/reactive). Status: submitted for publication.

Presented as an oral communication at the XLII National Congress in Statistics, Operations Research and Data Science (SEIO 2026), Santiago de Compostela, September 2026.

Recommended citation: Scielzo-Ortiz, F., Grané, A., & Díaz-Gorfinkiel, M. (2026). "Quantifying global polarization: Detection and analysis of opinion groups on the Gaza conflict at international level based on Reddit data." (Submitted for publication).