7576 search results - page 186 / 1516 » On Querying Ontologies and Databases |
298
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ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Text documents often embed data that is structured in nature, and we can expose this structured data using information extraction technology. By processing a text database with inf...
204
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DBPL
2001
Springer
15 years 11 months ago
2001
Springer
Abstract. We address a fundamental question concerning spatio-temporal database systems: “What are exactly spatio-temporal queries?” We define spatio-temporal queries to be co...
180
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DEXA
1997
Springer
15 years 10 months ago
1997
Springer
Abstract. In this paper, we consider a multidatabase system which consists of media databases and traditional alphanumeric databases. The semantic relationships which may exist amo...
172
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IDEAS
1997
IEEE
15 years 10 months ago
1997
IEEE
The ROL system is a novel deductive object-oriented database system that has been implemented at the University of Regina. It provides a uniform rule-based declarative language fo...
163
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ACSC
2001
IEEE
15 years 10 months ago
2001
IEEE
Most search systems for querying large document collections---for example, web search engines---are based on well-understood information retrieval principles