手法を比較

	Generalized Blockmodeling	Blockmodeling
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, Scott Boorman & Ronald Breiger
種類	Direct optimization partition of a network into positions with typed blocks	Network partitioning into positions and a reduced role structure
原典	Doreian, P., Batagelj, V., & Ferligoj, A. (2005). Generalized Blockmodeling. Cambridge University Press. ISBN: 978-0-521-84085-9	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.
別名	generalized blockmodel, direct blockmodeling, pre-specified blockmodeling, Doreian-Batagelj-Ferligoj blockmodeling	block modeling, blockmodel analysis, generalized blockmodeling, CONCOR
関連	5	4
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.	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.