Abstract
Detection and characterization of polarization are of major interest in Social Network Analysis, especially to identify conflictual topics that animate the interactions between users. As gatekeepers of their community, users in the boundaries significantly contribute to its polarization. We propose ERIS, a formal graph approach relying on community boundaries and users’ interactions to compute two metrics: the community antagonism and the porosity of boundaries. These values assess the degree of opposition between communities and their aversion to external exposure, allowing an understanding of the overall polarization through the behaviors of the different communities. We also present an implementation based on matrix computations, freely available online. Our experiments show a significant improvement in terms of efficiency in comparison to existing solutions. Finally, we apply our proposal on real data harvested from Twitter with a case study about the vaccines and the COVID-19.
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Notes
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See https://github.com/AlexisGuyot/ERIS/tree/main/experiment_complexity for more detailed explanations on the experiment.
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Quotes are retweets with additional comments.
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Acknowledgement
This work is supported by ISITE-BFC (ANR-15-IDEX-0003) coordinated by G. Brachotte, CIMEOS Laboratory (EA 4177), University of Burgundy.
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Guyot, A., Gillet, A., Leclercq, É., Cullot, N. (2022). ERIS: An Approach Based on Community Boundaries to Assess Polarization in Online Social Networks. In: Guizzardi, R., Ralyté, J., Franch, X. (eds) Research Challenges in Information Science. RCIS 2022. Lecture Notes in Business Information Processing, vol 446. Springer, Cham. https://doi.org/10.1007/978-3-031-05760-1_6
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