732 search results - page 46 / 147 » Efficient Evaluation of XQuery over Streaming Data |
KDD
2003
ACM
14 years 9 months ago
2003
ACM
Recently, mining data streams with concept drifts for actionable insights has become an important and challenging task for a wide range of applications including credit card fraud...
FOCS
2009
IEEE
14 years 3 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 ...
JIIS
2008
13 years 8 months ago
2008
In this paper, we study the incremental update of Frequent Closed Itemsets (FCIs) over a sliding window in a high-speed data stream. We propose the notion of semi-FCIs, which is to...
PVLDB
2008
13 years 8 months ago
2008
We study the efficient evaluation of top-k queries over data items, where the score of each item is dynamically computed by applying an item-specific function whose parameter valu...
KDD
2006
ACM
14 years 9 months ago
2006
ACM
Mining data streams of changing class distributions is important for real-time business decision support. The stream classifier must evolve to reflect the current class distributi...