750 search results - page 23 / 150 » Aggregates in Possibilistic Databases |
DASFAA
2009
IEEE
13 years 7 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...
PODS
2003
ACM
14 years 6 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 ...
WMCSA
2002
IEEE
13 years 11 months ago
2002
IEEE
We show how the database community’s notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the senso...
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
Many efficient algorithms to compute multidimensional aggregation and Cube for relational OLAP have been developed. However, to our knowledge, there is nothing to date in the lite...
VLDB
1995
ACM
13 years 10 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...