627 search results - page 21 / 126 » Efficient Top-k Query Evaluation on Probabilistic Data |
108
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WEBDB
2010
Springer
14 years 7 months ago
2010
Springer
The Semantic Web, which represents a web of knowledge, offers new opportunities to search for knowledge and information. To harvest such search power requires robust and scalable ...
EDBT
2009
ACM
15 years 1 months ago
2009
ACM
In a database system, disclosure of confidential private data may occur if users can put together the answers of past queries. Traditional access control mechanisms cannot guard a...
WEBDB
2005
Springer
15 years 3 months ago
2005
Springer
Efficient query processing in P2P-based Web integration systems poses a variety of challenges resulting from the strict decentralization and limited knowledge. As a special probl...
183
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SIGMOD
2008
ACM
15 years 9 months ago
2008
ACM
A major problem in detecting events in streams of data is that the data can be imprecise (e.g. RFID data). However, current state-ofthe-art event detection systems such as Cayuga ...
ICDE
2010
IEEE
15 years 9 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...