5221 search results - page 822 / 1045 » An On-line Problem Database |
256
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ICDE
2006
IEEE
16 years 8 months ago
2006
IEEE
We consider the problem of continuously maintaining order sketches over data streams with a relative rank error guarantee . Novel space-efficient and one-scan randomised technique...
271
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ICDE
2006
IEEE
16 years 8 months ago
2006
IEEE
A burst is a large number of events occurring within a certain time window. As an unusual activity, it's a noteworthy phenomenon in many natural and social processes. Many da...
262
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ICDE
2005
IEEE
16 years 8 months ago
2005
IEEE
We consider the problem of efficiently computing the skyline against the most recent N elements in a data stream seen so far. Specifically, we study the n-of-N skyline queries; th...
270
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ICDE
2004
IEEE
16 years 8 months ago
2004
IEEE
XML and other types of semi-structured data are typically represented by a labeled directed graph. To speed up path expression queries over the graph, a variety of structural inde...
305
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ICDE
2004
IEEE
16 years 8 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...