Compara mètodes

	Agrupament Jeràrquic Bayesà (BHC)	Anàlisi bayesiana de clústers
Camp	Estadística	Estadística
Família	Latent structure	Latent structure
Any d'origen	2005	1998–2002
Autor original	Katherine Heller & Zoubin Ghahramani	Fraley & Raftery (model-based); Dirichlet process formulations by Ferguson (1973) and Antoniak (1974)
Tipus	Probabilistic clustering / model-based hierarchical agglomeration	Probabilistic / model-based clustering
Font seminal	Heller, K. A. & Ghahramani, Z. (2005). Bayesian hierarchical clustering. In Proceedings of the 22nd International Conference on Machine Learning (ICML 2005), pp. 297–304. ACM.	Fraley, C. & Raftery, A. E. (2002). Model-based clustering, discriminant analysis, and density estimation. Journal of the American Statistical Association, 97(458), 611–631.
Àlies	BHC, probabilistic hierarchical clustering, Bayesian agglomerative clustering	BCA, Bayesian clustering, probabilistic cluster analysis, Bayesian model-based clustering
Relacionats	6	6
Resum	Bayesian hierarchical clustering is a probabilistic agglomerative algorithm that builds a tree of nested cluster merges using Bayesian model comparison at each step. Rather than minimising a geometric linkage criterion, it evaluates at every candidate merge whether the data from two clusters are better explained by a single combined model or by two separate models, yielding a statistically principled dendrogram.	Bayesian cluster analysis assigns observations to latent groups by combining a probabilistic model of within-cluster data with prior beliefs about cluster parameters and the number of clusters. It yields posterior probabilities of cluster membership and principled uncertainty estimates, making it more transparent than classical distance-based clustering algorithms.