610 search results - page 83 / 122 » Efficient Query Evaluation on Probabilistic Databases |
161
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ICDE
2005
IEEE
15 years 11 months ago
2005
IEEE
Index structures are designed to optimize search performance, while at the same time supporting efficient data updates. Although not explicit, existing index structures are typica...
ER
2008
Springer
14 years 11 months ago
2008
Springer
Modern information systems, and web information systems in particular, are faced with frequent database schema changes, which generate the necessity to manage them and preserve the...
160
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ICDE
2007
IEEE
15 years 11 months ago
2007
IEEE
Recently there has been increasing interest in the development of progress indicators for SQL queries. In this paper we present a lightweight online framework for this problem. Ou...
183
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ICDE
2000
IEEE
15 years 11 months ago
2000
IEEE
In high-dimensional and complex metric spaces, determining the nearest neighbor (NN) of a query object ? can be a very expensive task, because of the poor partitioning operated by...
173
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VLDB
2009
ACM
15 years 10 months ago
2009
ACM
Information is valuable to users when it is available not only at the right time but also at the right place. To support efficient location-based data access in wireless data broad...