STRUCTURAL PROPERTIES OF CORE–PERIPHERY COMMUNITIES

Junwei Su () and Peter Marbach
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Junwei Su: Department of Computer Science, University of Hong Kong, Pok Fu Lam, Hong Kong SAR
Peter Marbach: Department of Computer Science, University of Toronto, 40 St George St, Toronto, ON M5S 2E4, Canada

Advances in Complex Systems (ACS), 2023, vol. 26, issue 06, 1-43

Abstract: Empirical studies have consistently demonstrated the presence of a core–periphery structure within social network communities. Nevertheless, a formal model and comprehensive analysis to fully understand the structural characteristics of these communities are still lacking. This paper seeks to characterize these properties, focusing on agents’ interconnections and their allocation of rates. Employing a game-theoretic approach, our analysis unveils several novel insights. First, we show that periphery agents not only follow core agents but also other periphery agents who share similar primary interests. Second, our results illuminate the emergence of core–periphery communities, revealing the conditions under which they form, and how they form.

Keywords: Social networks; core–periphery structure; communities in social networks; game theory (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0219525923400040

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