منابع مشابه
Fuzzy and Probability Uncertainty Logics
Probability theory and fuzzy logic have been presented as quite distinct theoretical foundations for reasoning and decision making in situations of uncertainty. This paper establishes a common basis for both forms of logic of uncertainty in which a basic uncertainty logic is defined in terms of a valuation on a lattice of propositions. The (non-truth-functional) connectives for conjunction, dis...
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Uncertainty and vagueness are pervasive phenomena in real-life knowledge. They are supported in extended description logics that adapt classical description logics to deal with numerical probabilities or fuzzy truth values. While the two concepts are distinguished for good reasons, they combine in the notion of probably, which is ultimately a fuzzy qualification of probabilities. Here, we devel...
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The satisfiability problem for the logic FP(Ł) (fuzzy probability logic over Łukasiewicz logic) is shown to be NP-complete; satisfiability in FP(ŁΠ) (the same over the logic joining Łukasiewicz and product logic) is shown to be in PSPACE.
متن کاملCadiag-2 and Fuzzy Probability Logics
We briefly describe the medical expert system Cadiag-2, developed to support the differential diagnostic process in internal medicine. We propose a propositional logic called fuzzy probability logic as a possible formalization of Cadiag-2 and indicate the way of transferring Cadiag-2's methodology into this framework.
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This paper is concerned with the foundations of fuzzy reasoning and its relationships with other logics of uncertainty. The definitions of fuzzy logics are first examined and the role of fuzzification discussed. It is shown that fuzzification of PC gives a known multivalued logic but with inappropriate semantics of implication and various alternative forms of implication are discussed. In the m...
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ژورنال
عنوان ژورنال: Information and Control
سال: 1978
ISSN: 0019-9958
DOI: 10.1016/s0019-9958(78)90165-1