3225 search results - page 408 / 645 » Query Optimization by Stored Queries |
168
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WSDM
2010
ACM
16 years 4 months ago
2010
ACM
We study the fundamental problem of computing distances between nodes in large graphs such as the web graph and social networks. Our objective is to be able to answer distance que...
158
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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...
159
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EDBT
2009
ACM
16 years 1 months ago
2009
ACM
We study the problem of estimating selectivity of approximate substring queries. Its importance in databases is ever increasing as more and more data are input by users and are in...
176
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ISCC
2008
IEEE
16 years 29 days ago
2008
IEEE
Network monitoring is a complex task that generally requires the use of different tools for specific purposes. This paper describes a flexible network monitoring tool, called Pa...
172
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SSDBM
2008
IEEE
16 years 28 days ago
2008
IEEE
Wireless sensor networks have drawn much attention due to their ability to monitor ecosystems and wildlife habitats. In such systems, the data should be intelligently collected to ...