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- W2997474806 abstract "Validation is an important part of the research work on knowledge based systems. Three kinds of validation have been studied: syntactic validation, logical validation and semantic validation. We are interested in these three kinds of validation for knowledge based systems based on conceptual graphs. This paper focuses on semantic validation. We present a method to check whether a knowledge base is semantically valid. This is done with respect to constraints. We present two types of constraints, minimal and maximal descriptive constraints. Each of them is associated with a conceptual graph G. It allows one to specify that if there exist specializations of G in the knowledge base, then these specializations must respect some conditions. For each kind of descriptive constraints we propose a way of checking if a knowledge base is valid and define their logical semantics. Finally we compare descriptive constraints with other extensions of the conceptual graph model." @default.
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- W2997474806 date "1998-08-10" @default.
- W2997474806 modified "2023-10-11" @default.
- W2997474806 title "A semantic validation of conceptual graphs" @default.
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