Informational independence: Models and normal forms
نویسندگان
چکیده
منابع مشابه
Informational independence: Models and normal forms
The concept of informational independence plays a key role in most knowledge-based systems. J. Pearl and his co-researchers have analysed the basic properties of the concept and have formulated an axiomatic system for informational independence. This axiomatic system focuses on independences among mutually disjoint sets of variables. We show that in the context of probabilistic independence a f...
متن کاملCharacterising Normal Forms for Informational Independence
The concept of informational independence plays a key role in most knowledge-based systems. Although de ned di erently in di erent contexts, its basic properties have been axiomatised by J. Pearl and his co-researchers. Pearl's axiomatic system o ers a set of inference rules for deriving new independence statements from an initial set of statements and as such allows for a normal form for repre...
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First-order languages of imperfect information (IF rst-order languages) have been introduced by Hintikka and Sandu 2]. These languages contained independent quantiiers and connectives of the form (9x=W); (8x=W); (_=W); (^=W) where W is a set of variables (x = 2 W), the values of which the quan-tiiers and the connectives on the left side of the slash are supposed to be independent of. The notion...
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The semantics of the independence friendly logic of Hintikka and Sandu is usually defined via a game of imperfect information. We give a definition in terms of a game of perfect information. We also give an Ehrenfeucht-Fräıssé game adequate for this logic and use it to define a Distributive Normal Form for independence friendly logic.
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ژورنال
عنوان ژورنال: International Journal of Intelligent Systems
سال: 1998
ISSN: 0884-8173,1098-111X
DOI: 10.1002/(sici)1098-111x(199801)13:1<83::aid-int7>3.3.co;2-f