2675 search results - page 148 / 535 » From Ontology to Relational Databases |
161
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ESWS
2008
Springer
15 years 8 months ago
2008
Springer
We believe that the possibility to use SPARQL as a front end to heterogeneous data without significant cost in performance or expressive power is key to RDF taking its rightful pla...
156
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DASFAA
2010
IEEE
16 years 1 months ago
2010
IEEE
Abstract. Besides topological relations and approximate relations, cardinal directions have turned out to be an important class of qualitative spatial relations. In spatial databas...
133
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EDBT
2009
ACM
16 years 1 months ago
2009
ACM
Given a set Q of keywords, conventional keyword search (KS) returns a set of tuples, each of which (i) is obtained from a single relation, or by joining multiple relations, and (i...
171
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CIARP
2004
Springer
15 years 12 months ago
2004
Springer
We present a method for extracting selectional preferences of verbs from unannotated text. These selectional preferences are linked to an ontology (e.g. the hypernym relations foun...
174
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KCAP
2009
ACM
15 years 11 months ago
2009
ACM
PowerAqua1 is a Question Answering system, which takes as input a natural language query and is able to return answers drawn from relevant semantic resources found anywhere on the...