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	Structural Holes Analysis	Core-Periphery Analysis
Ämnesområde	Sociology	Sociology
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1992	2000
Upphovsperson	Ronald S. Burt	Stephen Borgatti & Martin Everett
Typ	Ego-network measure of brokerage opportunity and constraint	Network partition into a dense core and a sparse periphery
Ursprungskälla	Burt, R. S. (1992). Structural Holes: The Social Structure of Competition. Harvard University Press. ISBN: 978-0-674-84371-4	Borgatti, S. P., & Everett, M. G. (2000). Models of core/periphery structures. Social Networks, 21(4), 375–395.
Alias	structural holes, Burt constraint, network constraint analysis, effective size analysis	core/periphery model, Borgatti-Everett core-periphery, core-periphery structure detection, coreness analysis
Närliggande	5	5
Sammanfattning	Structural holes analysis, developed by Ronald Burt, measures the brokerage opportunities available to an actor by examining the gaps — structural holes — between their otherwise disconnected contacts. An actor whose contacts do not know each other bridges non-redundant sources of information and control and is said to be rich in structural holes; an actor whose contacts are all interconnected is constrained. The core measures — network constraint, effective size, and efficiency — quantify how much advantage an ego's network structure confers.	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.