方法对比

	Dyadic Analysis	Homophily Analysis	Isolation Index
领域	Sociology	Sociology	Sociology
方法族	Regression model	Process / pipeline	Process / pipeline
起源年份	1981	1954 (concept); 2001 (synthesis)	1954
提出者	Holland & Leinhardt (p1); Kenny (Social Relations Model)	Lazarsfeld & Merton (concept); McPherson, Smith-Lovin & Cook (synthesis)	Wendell Bell (formalization of P* indices)
类型	Analysis of the dyad as the unit, decomposing relational effects	Measurement of similarity-based tie formation	Exposure-dimension segregation index
开创性文献	Holland, P. W., & Leinhardt, S. (1981). An exponential family of probability distributions for directed graphs. Journal of the American Statistical Association, 76(373), 33–50.	McPherson, M., Smith-Lovin, L., & Cook, J. M. (2001). Birds of a feather: homophily in social networks. Annual Review of Sociology, 27, 415–444.	Bell, W. (1954). A probability model for the measurement of ecological segregation. Social Forces, 32(4), 357–364.
别名	dyad analysis, dyadic data analysis, social relations model, dyad census	homophily measurement, assortative mixing analysis, birds-of-a-feather analysis, tie-similarity analysis	P* isolation index, interaction index, exposure index, Bell isolation index
相关	4	4	5
摘要	Dyadic analysis treats the dyad — the pair of actors and the relation between them — as the unit of analysis, separating the relational outcome into what each actor brings to all their relationships and what is unique to the specific pair. It spans the descriptive dyad census of network analysis and statistical frameworks such as Holland and Leinhardt's p1 model and Kenny's Social Relations Model, all of which respect the structural non-independence inherent in relational data.	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.	The isolation index measures the exposure dimension of segregation: the extent to which members of a minority group are exposed only to one another rather than to members of other groups. It answers the question 'what is the own-group share of the typical neighbor (or classmate, or coworker) that a member of the focal group encounters?' Unlike evenness measures, it depends on the relative size of the group as well as its spatial distribution.