The likelihood approach to statistics can be interpreted as a theory of fuzzy probability. This paper presents a generalization of credal networks obtained by generalizing imprecise probabilities to fuzzy probabilities; that is, by additionally considering the relative plausibility of different values in the probability intervals.
Keywords. Bayesian networks, credal networks, graphical models, d-separation, imprecise probabilities, updating, likelihood function, hierarchical model, fuzzy probabilities.
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