3 papers
cs.SI2026
The Brazilian Vaccination Debate on YouTube: Topics, Perspectives, and Engagement Dynamics
Matheus S. Azevedo, Geovana S. de Oliveira, Andrea Failla +4
Vaccination debates are central to online public health communication, as COVID-19 intensified disputes over scientific authority, institutional trust, and political identity. Yet…
cs.CL2026
Mapping the Political Discourse in the Brazilian Chamber of Deputies: A Multi-Faceted Computational Approach
Flávio Soriano, Victoria F. Mello, Pedro B. Rigueira +4
Analyses of legislative behavior often rely on voting records, overlooking the rich semantic and rhetorical content of political speech. In this paper, we ask three complementary q…
cs.CY2026
Who Shapes Brazil's Vaccine Debate? Semi-Supervised Modeling of Stance and Polarization in YouTube's Media Ecosystem
Geovana S. de Oliveira, Ana P. C. Silva, Fabricio Murai +1
Vaccination remains a cornerstone of global public health, yet the COVID-19 pandemic exposed how online misinformation, political polarization, and declining institutional trust ca…