2181 search results - page 268 / 437 » Ontologies and Description Logics |
155
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AI
2010
Springer
15 years 6 months ago
2010
Springer
Delegation is a foundational concept for understanding and engineering systems that interact and execute tasks autonomously. By extending recent work on tensed action logic, it be...
175
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ADBIS
2004
Springer
15 years 12 months ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
217
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RR
2010
Springer
15 years 4 months ago
2010
Springer
Role-based access control is a standard mechanism in information systems. Based on the role a user has, certain information is kept from the user even if requested. For ontologies ...
165
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DLOG
2007
15 years 8 months ago
2007
We present a query answering technique based on notions and results from modal Correspondence Theory. It allows us to answer a wide family of conjunctive queries by polynomial redu...
207
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DAGSTUHL
2003
15 years 7 months ago
2003
Data mining focuses on the development of methods and algorithms for such tasks as classification, clustering, rule induction, and discovery of associations. In the database fiel...