549 search results - page 7 / 110 » Data Expiration and Aggregate Queries |
GEOINFO
2007
14 years 11 months ago
2007
In this paper we are interested in storing and perform OLAP queries about various aggregate trajectory properties. We consider a data stream environment where a set of mobile objec...
ICDM
2010
IEEE
14 years 7 months ago
2010
IEEE
-- In this paper, we put forward our approach for answering aggregated queries over imprecise data using domain specific taxonomies. A new concept we call the weighted hierarchical...
DEXA
2005
Springer
15 years 3 months ago
2005
Springer
Computing aggregates over distributed data sets constitutes an interesting class of distributed queries. Recent advances in peer-to-peer discovery of data sources and query process...
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ICDT
2001
ACM
15 years 1 months ago
2001
ACM
In fast OLAP applications it is often advantageous to provide approximate answers to range queries in order to achieve very high performances. A possible solution is to inquire sum...
PODS
2008
ACM
15 years 9 months ago
2008
ACM
Data exchange, also known as data translation, has been extensively investigated in recent years. One main direction of research has focused on the semantics and the complexity of...