950 search results - page 107 / 190 » Continuous Queries over Data Streams - Semantics and Impleme... |
178
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SIGMOD
2008
ACM
15 years 11 months ago
2008
ACM
To deal with data uncertainty, existing probabilistic database systems augment tuples with attribute-level or tuple-level probability values, which are loaded into the database al...
203
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ICDE
2007
IEEE
16 years 18 days ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...
SSDBM
2006
IEEE
15 years 5 months ago
2006
IEEE
Many applicationsstore data items for a pre-determined, finite length of time. Examples include slidingwindows over on-line data streams, where old data are dropped as the window...
106
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DKE
2006
14 years 11 months ago
2006
As several mature implementations of data warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to manage the chang...
ESA
2003
Springer
15 years 4 months ago
2003
Springer
In this paper we propose algorithms for solving a variety of geometric optimization problems on a stream of points in R2 or R3 . These problems include various extent measures (e.g...