1552 search results - page 43 / 311 » Efficient Aggregate Computation over Data Streams |
ICTCS
2005
Springer
15 years 6 months ago
2005
Springer
Abstract. We consider the problem of maintaining polynomial and exponential decay aggregates of a data stream, where the weight of values seen from the stream diminishes as time el...
81
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PODS
2006
ACM
16 years 20 days ago
2006
ACM
A k-set structure over data streams is a bounded-space data structure that supports stream insertion and deletion operations and returns the set of (item, frequency) pairs in the s...
186
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VLDB
2007
ACM
16 years 23 days 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...
117
Voted
EDBT
2008
ACM
16 years 20 days ago
2008
ACM
There has been much recent interest in on-line data mining. Existing mining algorithms designed for stored data are either not applicable or not effective on data streams, where r...
107
Voted
TKDE
2008
15 years 13 days ago
2008
We propose a novel approach based on predictive quantization (PQ) for online summarization of multiple time-varying data streams. A synopsis over a sliding window of most recent en...