578 search results - page 6 / 116 » The Importance of Aggregation |
ICDE
2008
IEEE
14 years 11 months ago
2008
IEEE
In a massive stream of sequential events such as stock feeds, sensor readings, or IP traffic measurements, tuples pertaining to recent events are typically more important than olde...
DASFAA
2009
IEEE
13 years 11 months ago
2009
IEEE
The problem of identifying deviating patterns in XML repositories has important applications in data cleaning, fraud detection, and stock market analysis. Current methods determine...
VLDB
1995
ACM
14 years 1 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
SBBD
2007
13 years 11 months ago
2007
The optimization of similarity queries using metric access methods has been widely discussed in the last decades. Similarity queries consider one object as the query center, and re...
PODS
2003
ACM
14 years 10 months ago
2003
ACM
We formalize the problem of maintaining time-decaying aggregates and statistics of a data stream: the relative contribution of each data item to the aggregate is scaled down by a ...