7576 search results - page 198 / 1516 » On Querying Ontologies and Databases |
183
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VLDB
2002
ACM
15 years 6 months ago
2002
ACM
Query optimization is a computationally intensive process, especially for complex queries. We present here a tool, called PLASTIC, that can be used by query optimizers to amortize...
154
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VLDB
1991
ACM
15 years 10 months ago
1991
ACM
The development of a distributed database systemrequires effective solutions to many complex and interrelated design problems. The cost dependenciesbetween query optimization and ...
215
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ICDE
2010
IEEE
16 years 1 months ago
2010
IEEE
— Finding the k nearest neighbors (kNN) of a query point, or a set of query points (kNN-Join) are fundamental problems in many application domains. Many previous efforts to solve...
178
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ESWS
2009
Springer
16 years 1 months ago
2009
Springer
Abstract. Ontology matching has become an important field of research over the last years. Although many different approaches have been proposed, only few of them are committed t...
158
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SIGMOD
2003
ACM
16 years 6 months ago
2003
ACM
Webcams, microphones, pressure gauges and other sensors provide exciting new opportunities for querying and monitoring the physical world. In this paper we focus on querying wide ...