STATISTICAL INFERENCE AS DEFAULT REASONING
نویسندگان
چکیده
منابع مشابه
Statistical Inference as Default Reasoning
Classical statistical inference isnonmonotonic in nature. We show how it can be form~ized inthe default logic framework. Thestructure of statistical inference is the same as that represented by default rules. In particular, theprerequisite corresponds to the sample statistics, the justifications require that we do not have any reason to believe that the sample is misleading, and the consequent ...
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We describe a new approach to default reason ing based on a principle of indi erence among possible worlds We interpret default rules as extreme statistical statements thus obtaining a knowledge base KB comprised of statistical and rst order statements We then assign equal probability to all worlds consistent with KB in order to assign a degree of belief to a statement The degree of belief can ...
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Several attempts to define formal logic5 for some type of default reasoning have been made. All of these logics share the property that in any given state, a proposition p is either held to be true, it is held to be false, or no belief about it is held. But, if we ask what default reasoning really is, we see that it is form of likelihood reasoning. The goal of this paper is to show that if defa...
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This paper presents a probabilistic analysis of plausible reasoning about defaults and about likelihood. "Likely" and "by default" are in fact treated as duals in the same sense as _possibility" and "necessity". To model these four forms probabilistically, a logic QDP and its quantitative counterpart DP are derived that allow qualitative and corresponding quantitative reasoning. Consistency and...
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Probabilistic grammars define a set of well-formed or grammatical linguistic structures, just as all grammars do. But in addition probabilistic grammars also define probability distributions over these structures, which a statistical inference procedure can exploit. This paper describes two simple statistical inference procedures for probabilistic grammars and discusses some of the challenges i...
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ژورنال
عنوان ژورنال: International Journal of Pattern Recognition and Artificial Intelligence
سال: 1999
ISSN: 0218-0014,1793-6381
DOI: 10.1142/s021800149900015x