השוואת שיטות

	ניתוח בייסיאני של מחלקות סמויות (BLCA)	ניתוח מחלקות סמויות (LCA)
תחום	סטטיסטיקה	סטטיסטיקה
משפחה	Latent structure	Latent structure
שנת המקור	1990s–2000s	1950s–1968
הוגה השיטה	Lazarsfeld (classical LCA); Bayesian formulation developed through Cheeseman & Stutz (1996) and Dunson & Xing (2009)	Paul F. Lazarsfeld
סוג	Bayesian latent variable / finite mixture model	Latent variable / person-centered classification
מקור מכונן	Dunson, D. B. & Xing, C. (2009). Nonparametric Bayes modeling of multivariate categorical data. Journal of the American Statistical Association, 104(487), 1042–1051.	Goodman, L. A. (1974). Exploratory latent structure analysis using both identifiable and unidentifiable models. Biometrika, 61(2), 215–231.
כינויים	Bayesian LCA, BLCA, Bayesian mixture of multinomials, Bayesian finite mixture model	LCA, latent class model, latent categorical analysis, finite mixture of multinomials
קשורות	6	6
תקציר	Bayesian latent class analysis extends classical LCA by placing prior distributions on all model parameters and using posterior inference — typically via MCMC — to classify individuals into unobserved categorical groups, quantify uncertainty around class membership, and select the number of classes in a principled, probabilistic way.	Latent class analysis identifies unobserved subgroups — latent classes — within a population by finding patterns of responses across a set of categorical observed indicators. It is the categorical-variable counterpart of cluster analysis, but grounded in an explicit probabilistic model, and is widely used in social, health, and behavioral sciences to discover typologies in survey or diagnostic data.