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	Structural Holes Analysis	ソーシャルネットワーク分析
分野	Sociology	ネットワーク分析
系統	Process / pipeline	Machine learning
提唱年	1992	1934 (sociometry); 1994 (modern formalization)
提唱者	Ronald S. Burt	Moreno, J.L.; formalized by Wasserman & Faust
種類	Ego-network measure of brokerage opportunity and constraint	Structural/relational analysis framework
原典	Burt, R. S. (1992). Structural Holes: The Social Structure of Competition. Harvard University Press. ISBN: 978-0-674-84371-4	Wasserman, S. & Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge University Press. ISBN: 978-0-521-38707-1
別名	structural holes, Burt constraint, network constraint analysis, effective size analysis	SNA, network analysis, sociometric analysis, relational analysis
関連	5	5
概要	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.	Social Network Analysis (SNA) is a structural method that maps and measures relationships and flows between people, groups, organizations, or other entities modeled as nodes connected by ties (edges). Rather than focusing on individual attributes, SNA reveals how the pattern of connections shapes behavior, influence, information flow, and outcomes within a system.