Compara mètodes

	Xarxa Bayesiana Jeràrquica	Xarxa Bayesiana Dinàmica
Camp	Bayesià	Bayesià
Família	Bayesian methods	Bayesian methods
Any d'origen	1990s–2000s	1989
Autor original	Koller, Friedman, and colleagues	Thomas Dean & Keiji Kanazawa
Tipus	probabilistic graphical model	probabilistic graphical model for sequences
Font seminal	Koller, D. & Friedman, N. (2009). Probabilistic Graphical Models: Principles and Techniques. MIT Press. ISBN: 978-0262013192	Dean, T. & Kanazawa, K. (1989). A model for reasoning about persistence and causation. Computational Intelligence, 5(3), 142–150.
Àlies	HBN, layered Bayesian network, multi-level Bayesian network, hierarchical probabilistic graphical model	DBN, temporal Bayesian network, dynamic probabilistic graphical model, two-slice temporal Bayesian network
Relacionats	6	5
Resum	A hierarchical Bayesian network is a probabilistic graphical model that organizes variables across multiple levels of abstraction. Higher-level nodes govern the prior distributions of lower-level nodes through hyperparameters, enabling structured sharing of information across groups, contexts, or data subsets while preserving the directed acyclic graph (DAG) representation of conditional dependencies.	A Dynamic Bayesian Network (DBN) extends a standard Bayesian network over time by representing how a set of random variables evolve across discrete time steps. It captures both the conditional independence structure among variables at each instant and the probabilistic dependencies between consecutive time slices, enabling principled reasoning about temporal processes under uncertainty.