373 search results - page 20 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
TC
1998
14 years 11 months ago
1998
Data integrity policies often require that quality and integrity metadata be generated and communicated to potential users. However, in data warehouses, federations, and other mul...
162
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SIGMOD
2008
ACM
15 years 9 months ago
2008
ACM
Reverse skyline queries over uncertain databases have many important applications such as sensor data monitoring and business planning. Due to the existence of uncertainty in many...
ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
Many online or local data sources provide powerful querying mechanisms but limited ranking capabilities. For instance, PubMed allows users to submit highly expressive Boolean keywo...
104
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WWW
2011
ACM
14 years 4 months ago
2011
ACM
The multimedia information retrieval community has dedicated extensive research effort to the problem of content-based image retrieval (CBIR). However, these systems find their ma...
103
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EDBT
2006
ACM
15 years 9 months ago
2006
ACM
In this paper we present a novel approach for estimating the selectivity of XML twig queries. Such a technique is useful for approximate query answering as well as for determining...