手法を比較

	Homophily Analysis	Stochastic Actor-Oriented Model
分野	Sociology	Sociology
系統	Process / pipeline	Machine learning
提唱年	1954 (concept); 2001 (synthesis)	2001
提唱者	Lazarsfeld & Merton (concept); McPherson, Smith-Lovin & Cook (synthesis)	Tom A. B. Snijders
種類	Measurement of similarity-based tie formation	Continuous-time model for longitudinal network and behavior dynamics
原典	McPherson, M., Smith-Lovin, L., & Cook, J. M. (2001). Birds of a feather: homophily in social networks. Annual Review of Sociology, 27, 415–444.	Snijders, T. A. B. (2001). The statistical evaluation of social network dynamics. Sociological Methodology, 31(1), 361–395.
別名	homophily measurement, assortative mixing analysis, birds-of-a-feather analysis, tie-similarity analysis	SAOM, actor-based model, stochastic actor-based model, SIENA model
関連	4	4
概要	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 stochastic actor-oriented model (SAOM), implemented in the SIENA software, is a framework for analyzing the dynamics of social networks observed at two or more time points. It treats observed network panels as snapshots of an unobserved continuous-time process in which actors, at stochastically timed moments, evaluate their local network and decide whether to create, maintain, or drop a tie so as to improve their position according to an objective function.