手法を比較

	Blockmodeling	Homophily Analysis	Positional Analysis	ソーシャルネットワーク分析
分野	Sociology	Sociology	Sociology	ネットワーク分析
系統	Process / pipeline	Process / pipeline	Process / pipeline	Machine learning
提唱年	1976	1954 (concept); 2001 (synthesis)	1976	1934 (sociometry); 1994 (modern formalization)
提唱者	Harrison White, Scott Boorman & Ronald Breiger	Lazarsfeld & Merton (concept); McPherson, Smith-Lovin & Cook (synthesis)	Harrison White, Ronald Burt, and colleagues	Moreno, J.L.; formalized by Wasserman & Faust
種類	Network partitioning into positions and a reduced role structure	Measurement of similarity-based tie formation	Framework for identifying network positions and the roles among them	Structural/relational analysis framework
原典	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.	McPherson, M., Smith-Lovin, L., & Cook, J. M. (2001). Birds of a feather: homophily in social networks. Annual Review of Sociology, 27, 415–444.	Burt, R. S. (1976). Positions in networks. Social Forces, 55(1), 93–122.	Wasserman, S. & Faust, K. (1994). Social Network Analysis: Methods and Applications. Cambridge University Press. ISBN: 978-0-521-38707-1
別名	block modeling, blockmodel analysis, generalized blockmodeling, CONCOR	homophily measurement, assortative mixing analysis, birds-of-a-feather analysis, tie-similarity analysis	role analysis, positional role analysis, network role and position analysis, regular equivalence analysis	SNA, network analysis, sociometric analysis, relational analysis
関連	4	4	5	5
概要	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.	Homophily analysis quantifies the tendency of similar individuals to form ties — the principle that 'birds of a feather flock together'. It compares the rate at which people connect with others who share an attribute (race, gender, age, education, attitudes) against what would be expected by chance, distinguishing the homophily that arises merely from group sizes from the genuine, behavior-driven preference for similar others.	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.	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.