Models of core/periphery structures

Stephen P. Borgatti, Martin G. Everett

Research output: Contribution to journalArticlepeer-review

1432 Scopus citations


A common but informal notion in social network analysis and other fields is the concept of a core/periphery structure. The intuitive conception entails a dense, cohesive core and a sparse, unconnected periphery. This paper seeks to formalize the intuitive notion of a core/periphery structure and suggests algorithms for detecting this structure, along with statistical tests for testing a priori hypotheses. Different models are presented for different kinds of graphs (directed and undirected, valued and nonvalued). In addition, the close relation of the continuous models developed to certain centrality measures is discussed.

Original languageEnglish
Pages (from-to)375-395
Number of pages21
JournalSocial Networks
Issue number4
StatePublished - Oct 2000


  • Algorithm
  • Core
  • Periphery

ASJC Scopus subject areas

  • Anthropology
  • Sociology and Political Science
  • General Social Sciences
  • General Psychology


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