Recorded Talks and Events | CRiSS-LAB Chile

The Election Polarization Index (EPI): Mapping polarization through elections

Fri, 31 Mar 2023 12:00:00 +0000

Abstract:

The study of polarization as a social phenomenon has inspired a rich literature on methods and socio-demographic features to characterize them. Although there are propositions to capture polarization in geographies, such as mapping inequality or rural population in territories, those alternatives lack the ability to represent variations of political polarization over time. Here we introduce the Election Polarization Index (EPI), an agnostic method to map polarization in geographies from election outcomes. First, we show that traditional polarization methods lack the ability to capture polarization from election data. Then, using presidential election data in France, Chile, and the United States, we find that the EPI encompasses the effects of socio-demographic characteristics associated with polarization and also provides new information about the variations of polarization within and between geographies over time. To conclude, we find that this method is robust to quantify polarization by using two elections held on the same day or aggregating the data on any geographical scale.

Speaker Bio

Carlos Navarrete is a Ph.D. candidate in Computer Science at the University of Toulouse. His research is focused on understanding how computational methods contribute to identify divisiveness and polarization in society, positionating his focus in the intersection of political and computer science.

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Cultural products have a life of their own: academic papers get cited and songs get downloaded. While scholars have studied these patterns, we know little about how to model the decay of attention. In this study Candia and colleagues model the attention received by cultural products, including scientific papers, patents, songs, movies, and biographies, and show that all these decay following a universal bi-exponential function, which may be due to the differing functions of communicative and cultural collective memory [1].

[1] The universal decay of collective memory and attention.
Cristian Candia, C. Jara-Figueroa, Carlos Rodriguez-Sickert, Albert-László Barabási, and César Hidalgo.
Published in Nature Human Behaviour 2019.