قارن الطرق

	شبكة بايزي الهرمية	الشبكة البايزية الديناميكية
المجال	بايزي	بايزي
العائلة	Bayesian methods	Bayesian methods
سنة النشأة	1990s–2000s	1989
صاحب الطريقة	Extension of Pearl's Bayesian networks; multilevel formulation developed in statistical relational learning community, 1990s–2000s	Thomas Dean & Keiji Kanazawa
النوع	Probabilistic graphical model (hierarchical)	probabilistic graphical model for sequences
المصدر التأسيسي	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.
الأسماء البديلة	multi-level Bayesian network, hierarchical Bayesian network, MLBN, multilevel probabilistic graphical model	DBN, temporal Bayesian network, dynamic probabilistic graphical model, two-slice temporal Bayesian network
ذات صلة	6	5
الملخص	A multilevel Bayesian network extends the standard Bayesian network to data with hierarchical or grouped structure — students within schools, patients within hospitals, observations within subjects — by placing separate but linked graphical models at each level, with higher-level parameters governing the conditional probability tables of lower-level nodes. The result is a principled probabilistic framework that captures both within-group relationships and between-group variation.	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.