手法を比較

	Generalized Blockmodeling	Positional Analysis
分野	Sociology	Sociology
系統	Process / pipeline	Process / pipeline
提唱年	2005	1976
提唱者	Patrick Doreian, Vladimir Batagelj & Anuška Ferligoj	Harrison White, Ronald Burt, and colleagues
種類	Direct optimization partition of a network into positions with typed blocks	Framework for identifying network positions and the roles among them
原典	Doreian, P., Batagelj, V., & Ferligoj, A. (2005). Generalized Blockmodeling. Cambridge University Press. ISBN: 978-0-521-84085-9	Burt, R. S. (1976). Positions in networks. Social Forces, 55(1), 93–122.
別名	generalized blockmodel, direct blockmodeling, pre-specified blockmodeling, Doreian-Batagelj-Ferligoj blockmodeling	role analysis, positional role analysis, network role and position analysis, regular equivalence analysis
関連	5	5
概要	Generalized blockmodeling, developed by Doreian, Batagelj, and Ferligoj, partitions the actors of a network into positions and simultaneously characterizes the ties between positions as one of several allowed block types — null, complete, regular, dominant, and others. Rather than the indirect, two-step approach of computing equivalences and then clustering, it directly searches for the partition that minimizes the inconsistency between the observed network and an idealized block structure, optionally one the analyst pre-specifies from theory.	Positional analysis is the network-analytic program that identifies the positions actors occupy — sets of actors equivalent in their relational patterns — and characterizes the system of roles that links those positions. Growing out of Harrison White's structuralism and Ronald Burt's operationalization in the 1970s, it treats the social structure as a small set of positions and the role relations among them, rather than as a collection of individual actors.