手法を比較

	ベイズ潜在クラス分析（BLCA）	ベイズ混合モデリング
分野	統計学	統計学
系統	Latent structure	Latent structure
提唱年	1990s–2000s	1997 (Richardson & Green Bayesian formulation)
提唱者	Lazarsfeld (classical LCA); Bayesian formulation developed through Cheeseman & Stutz (1996) and Dunson & Xing (2009)	Richardson & Green (seminal Bayesian treatment, 1997); broader Bayesian mixture roots trace to Dempster, Laird & Rubin (EM, 1977) and Titterington, Smith & Makov (1985)
種類	Bayesian latent variable / finite mixture model	Latent-class / model-based clustering
原典	Dunson, D. B. & Xing, C. (2009). Nonparametric Bayes modeling of multivariate categorical data. Journal of the American Statistical Association, 104(487), 1042–1051.	Fruhwirth-Schnatter, S., Celeux, G. & Robert, C. P. (Eds.) (2019). Handbook of Mixture Analysis. CRC Press / Chapman & Hall. ISBN: 9780367733995
別名	Bayesian LCA, BLCA, Bayesian mixture of multinomials, Bayesian finite mixture model	Bayesian mixture model, BMM, Bayesian model-based clustering, Bayesian finite mixture
関連	6	4
概要	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.	Bayesian mixture modeling represents the population as a weighted sum of K component distributions and estimates all unknowns — mixing weights, component parameters, and even the number of components — through posterior inference. It extends classical mixture analysis by placing priors on every parameter and quantifying uncertainty over latent group assignments rather than treating them as fixed.