Reasoning in evidential networks with conditional belief functions
نویسندگان
چکیده
منابع مشابه
Evidential Reasoning with Conditional Belief Functions
In the existing evidential networks with belief functions, the relations among the variables are always represented by joint belief functions on the product space of the involved variables. In this paper, we use conditional belief functions to represent such relations in the network and show some relations of these two kinds of representations. We also present a propagation algorithm for such n...
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We propose a new message-passing belief propagation method that approximates belief updating on evidential networks with conditional belief functions. By means of local conditioning, the method is able to propagate beliefs on the original multiply-connected network structure using local computations, facilitating reasoning in a distributed and dynamic context. Further, by use of conditional bel...
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Some recently developed expert systems have used the ShaferDempster theory for reasoning from multiple bodies of evidence. Many expert-system applications require belief to be specified over arbitrary ranges of scalar variables, such as time, distance or sensor measurements. The utility of the existing ShaferDempster theory is limited by the lack of an effective approach for dealing with belief...
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The temporal dimension is a very important aspect which must be taken into account when reasoning under uncertainty. The main purpose of this paper is to address this problem by a new evidential framework for modeling temporal changes in data. This method, allowing to model uncertainty and to manage time varying information thanks to the evidence theory, offers an alternative framework for dyna...
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In this paper we study the problem of conditioning a belief function b with respect to an event A by geometrically projecting such belief function onto the simplex associated with A in the simplex of all belief functions. Two different such simplices can be defined, as each belief function can be represented as the vector of its basic probability values or the vector of its belief values. We sh...
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ژورنال
عنوان ژورنال: International Journal of Approximate Reasoning
سال: 1996
ISSN: 0888-613X
DOI: 10.1016/0888-613x(96)00113-2