710 search results - page 58 / 142 » Querying continuous functions in a database system |
309
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ICDE
2009
IEEE
16 years 8 months ago
2009
IEEE
We have developed a system to process database queries over composed data providing web services. The queries are transformed into execution plans containing an operator that invok...
204
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CIKM
2010
Springer
15 years 4 months ago
2010
Springer
Recently, several research efforts have addressed answering skyline queries efficiently over large datasets. However, this research lacks methods to compute these queries over un...
161
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ADBIS
2005
Springer
15 years 11 months ago
2005
Springer
Abstract. The performance of an information retrieval system is usually measured in terms of two different criteria, precision and recall. This way, the optimization of any of its...
235
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
176
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ISCI
2007
15 years 6 months ago
2007
In an object-relational database management system, a query optimizer requires users to provide cost models of userdefined functions. The traditional approach is analytical, that...