I'm an Associate Research Professor at the Scientific Computing Laboratory of the Institute of Physics Belgrade.

I study online communities as complex social systems, combining behavioral data, network analysis, machine learning, and simulation. My current work focuses on LLM-agent simulations of online platforms, community sustainability, trust and reputation processes, political communication, populism, and AI-mediated social dynamics. I also build open-source tools for analyzing emotion in text, images, and video.

I earned my PhD at the University of Novi Sad in 2019, working on quantitative methods and network science. I was a Fulbright Scholar at the University of Virginia in 2023–2024, an invited speaker at the International Meeting of the Psychometric Society, and one of the developers of YSocial.

Erdős number 4: Paul Erdős → Béla Bollobás → Guido Caldarelli → Marija Mitrović Dankulov → Aleksandar Tomašević.

Aleksandar Tomašević

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2026

2025

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