手法を比較

	Positional Analysis	Homophily Analysis
分野	Sociology	Sociology
系統	Process / pipeline	Process / pipeline
提唱年	1976	1954 (concept); 2001 (synthesis)
提唱者	Harrison White, Ronald Burt, and colleagues	Lazarsfeld & Merton (concept); McPherson, Smith-Lovin & Cook (synthesis)
種類	Framework for identifying network positions and the roles among them	Measurement of similarity-based tie formation
原典	Burt, R. S. (1976). Positions in networks. Social Forces, 55(1), 93–122.	McPherson, M., Smith-Lovin, L., & Cook, J. M. (2001). Birds of a feather: homophily in social networks. Annual Review of Sociology, 27, 415–444.
別名	role analysis, positional role analysis, network role and position analysis, regular equivalence analysis	homophily measurement, assortative mixing analysis, birds-of-a-feather analysis, tie-similarity analysis
関連	5	4
概要	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.	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.