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Making the knowledge base systems more efficient: a method to detect inconsistent queries

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3 Author(s)
Illarramendi, A. ; Facultad de Inf., San Sebastian, Spain ; Blanco, J.M. ; Goni, A.

The processing cost of queries with an empty answer, both in the database and knowledge base context, is usually high. One purpose of semantic query optimization methods in the database context is to use semantic knowledge to detect such types of queries. Although semantic query optimization is well known in the database context, this is not the case for knowledge base systems (KBSs). This paper presents a method that allows the detection of queries with an empty answer using only semantic information expressed in the knowledge base definition. The method can be applied in the context of KBSs that provide some of the following features: structuring mechanisms, assertional knowledge, temporal information, and handling of inequality expressions

Published in:

Knowledge and Data Engineering, IEEE Transactions on  (Volume:6 ,  Issue: 4 )

Date of Publication:

Aug 1994

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