A structurally and temporally extended Bayesian belief network model: definitions, properties, and modeling techniques

Authors:
Constantin F. Aliferis;Gregory F. Cooper
Affiliations:
Medical Informatics & Intelligent Systems Program, University of Pittsburgh, Pittsburgh, PA;Medical Informatics & Intelligent Systems Program, University of Pittsburgh, Pittsburgh, PA
Venue:
UAI'96 Proceedings of the Twelfth international conference on Uncertainty in artificial intelligence
Year:
1996

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Abstract

We developed the language of Modifiable Temporal Belief Networks (MTBNs) as a structural and temporal extension of Bayesian Belief Networks (BNs) to facilitate normative temporal and causal modeling under uncertainty. In this paper we present definitions of the model, its components, and its fundamental properties. We also discuss how to represent various types of temporal knowledge, with an emphasis on hybrid temporal-explicit time modeling, dynamic structures, avoiding causal temporal inconsistencies, and dealing with models that involve simultaneously actions (decisions) and causal and non-causal associations. We examine the relationships among BNs, Modifiable Belief Networks, and MTBNs with a single temporal granularity, and suggest areas of application suitable to each one of them.