549 search results - page 5 / 110 » Data Expiration and Aggregate Queries |
261
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ICDT
2009
ACM
16 years 7 months ago
2009
ACM
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
261
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SIGMOD
2005
ACM
16 years 6 months ago
2005
ACM
Window queries are proving essential to data-stream processing. In this paper, we present an approach for evaluating sliding-window aggregate queries that reduces both space and c...
165
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VLDB
1995
ACM
15 years 10 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
157
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DMDW
2000
15 years 7 months ago
2000
A common optimization technique in the OLAP application domain is the use of summary aggregate data. For an appropriate support of analysis hot spots, we propose a query based agg...
316
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ICDE
2008
IEEE
16 years 7 months ago
2008
IEEE
Abstract-- Cisco's NetFlow Collector (NFC) is a powerful example of a real-world product that supports multiple aggregate queries over a continuous stream of IP flow records. ...