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Uncertain and negative evidence in continuous time Bayesian networks
Affiliation:Department of Computer Science, Montana State University, Bozeman, MT 59717, USA
Abstract:The continuous time Bayesian network (CTBN) enables reasoning about complex systems by representing the system as a factored, finite-state, continuous-time Markov process. Inference over the model incorporates evidence, given as state observations through time. The time dimension introduces several new types of evidence that are not found with static models. In this work, we present a comprehensive look at the types of evidence in CTBNs. Moreover, we define and extend inference to reason under uncertainty in the presence of uncertain evidence, as well as negative evidence, concepts extended to static models but not yet introduced into the CTBN model.
Keywords:Continuous time Bayesian network  Uncertain evidence  Negative evidence  Exact inference  Importance sampling
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