Methoden vergleichen

	Core-Periphery Analysis	Blockmodeling
Fachgebiet	Sociology	Sociology
Familie	Process / pipeline	Process / pipeline
Entstehungsjahr	2000	1976
Urheber	Stephen Borgatti & Martin Everett	Harrison White, Scott Boorman & Ronald Breiger
Typ	Network partition into a dense core and a sparse periphery	Network partitioning into positions and a reduced role structure
Wegweisende Quelle	Borgatti, S. P., & Everett, M. G. (2000). Models of core/periphery structures. Social Networks, 21(4), 375–395.	White, H. C., Boorman, S. A., & Breiger, R. L. (1976). Social structure from multiple networks. I. Blockmodels of roles and positions. American Journal of Sociology, 81(4), 730–780.
Aliasnamen	core/periphery model, Borgatti-Everett core-periphery, core-periphery structure detection, coreness analysis	block modeling, blockmodel analysis, generalized blockmodeling, CONCOR
Verwandt	5	4
Zusammenfassung	Core/periphery analysis partitions a network into a densely interconnected core of actors and a sparse periphery whose members connect to the core but not to one another. Formalized by Borgatti and Everett, the method fits the observed adjacency matrix to an idealized block pattern — a fully connected core block, an empty periphery block, and core–periphery blocks of intermediate density — to test whether and how strongly a network exhibits this canonical mesoscale structure.	Blockmodeling is a family of methods that simplify a social network by partitioning its actors into positions — groups of actors who are equivalent in their pattern of ties — and summarizing the relations between positions as a compact image, or reduced role structure. Introduced by Harrison White, Scott Boorman, and Ronald Breiger in 1976, it shifts attention from individuals to the structural roles they occupy.