Reasoning in knowledge bases with external and internal uncertainties
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DOI:
https://doi.org/10.15625/1813-9663/10/2/8167Abstract
The paper presents a method of logical reasoning in knowledge bases with uncertainty; such a knowledge base is given by a set of “knowledges” of two following forms:
1) <S,I> where S is a sentence, and I Í[0,1] is an interval of the possible values for truth probability of S.
2) <S1,I1> Ù <S2,I2> Ù …Ù <Sn,In> ® <S,I>, where S1, S2,…, Sn, S are sentences, and I1, I2,…, In, I are the corresponding intervals of their truth probabilities.
Let B be a such knowledge base, and S be a goal sentence. The interval of truth probabilities of S derived from B can be found by the proposed method.
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