620 search results - page 31 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
135
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ER
2003
Springer
15 years 9 months ago
2003
Springer
Many Internet-based applications have adopted XML as the standard data exchange format. These XML data are typically stored in its native form, thus creating the need to present XM...
218
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PODS
2011
ACM
14 years 6 months ago
2011
ACM
Database queries can be broadly classified into two categories: reporting queries and aggregation queries. The former retrieves a collection of records from the database that mat...
166
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DMSN
2006
ACM
15 years 9 months ago
2006
ACM
In this paper, we study the problem of processing multiple queries in a wireless sensor network. We focus on multiquery optimization at the base station level to minimize the numb...
144
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SIGECOM
2010
ACM
15 years 8 months ago
2010
ACM
One of the fundamental problems in the theory of social choice is aggregating the rankings of a set of agents (or voters) into a consensus ranking. Rank aggregation has found appl...
120
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CIKM
2010
Springer
15 years 2 months ago
2010
Springer
In recent years, there has been an explosion of publicly available RDF and OWL data sources. In order to effectively and quickly answer queries in such an environment, we present...