156 search results - page 16 / 32 » Time-Decayed Correlated Aggregates over Data Streams. |
FOCS
2009
IEEE
15 years 4 months ago
2009
IEEE
Abstract— We consider the problem of estimating cascaded aggregates over a matrix presented as a sequence of updates in a data stream. A cascaded aggregate P ◦Q is defined by ...
177
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SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
Complex queries over high speed data streams often need to rely on approximations to keep up with their input. The research community has developed a rich literature on approximat...
155
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VLDB
2007
ACM
15 years 9 months ago
2007
ACM
Several recent papers have focused on OLAP over imprecise data, where each fact can be a region, instead of a point, in a multidimensional space. They have provided a multiple-wor...
VLDB
2004
ACM
15 years 2 months ago
2004
ACM
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
SECON
2008
IEEE
15 years 3 months ago
2008
IEEE
— What is the fastest rate at which we can collect a stream of aggregated data from a set of wireless sensors organized as a tree? We explore a hierarchy of techniques using real...