作者
Peter Gärdenfors, David Makinson
发表日期
1994/2/1
期刊
Artificial Intelligence
卷号
65
期号
2
页码范围
197-245
出版商
Elsevier
简介
We show how nonmonotonic inferences may elegantly be interpreted in terms of underlying expectations. The fundamental idea is that when we reason, we make use of not only the information that we firmly believe, but also expectations that guide our beliefs without quite being part of them. We propose two ways of modelling the expectations used in nonmonotonic reasoning: by expectation sets, equipped with selection functions, and by expectation relations. For each of these we prove representation theorems and establish relations with several other modellings in the area, including Poole systems and preferential models.
We also show that by using the notion of expectation, one can unify the treatment of the theory of belief revision and that of nonmonotonic inference relations. This is accomplished by viewing the relation of “epistemic entrenchment” used in Gärdenfors [18] and Gärdenfors and Makinson [20] as …
引用总数
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学术搜索中的文章
G Peter, M David - Artificial Intelligence, 1994
P Gärdenfors, D Makinson - Artificial Intelligence, 1991