4051 search results - page 25 / 811 » Aggregation |
LPNMR
2009
Springer
15 years 2 months ago
2009
Springer
Several proposals of the semantics of aggregates are based on different extensions of the stable model semantics, which makes it difficult to compare them. In this note, building ...
VLDB
1998
ACM
15 years 1 months ago
1998
ACM
Small Materialized Aggregates (SMAs for short) are considered a highly flexible and versatile alternative for materialized data cubes. The basic idea is to compute many aggregate ...
VLDB
2000
ACM
15 years 1 months ago
2000
ACM
We present the TreeScape system that, unlike any other system known to the authors, enables the reuse of pre-computed aggregate query results for irregular dimension hierarchies, ...
CORR
2006
Springer
14 years 9 months ago
2006
Springer
The predominate traffic patterns in a wireless sensor network are many-to-one and one-to-many communication. Hence, the performance of wireless sensor networks is characterized by ...
JMLR
2006
14 years 9 months ago
2006
In this paper we prove the optimality of an aggregation procedure. We prove lower bounds for aggregation of model selection type of M density estimators for the Kullback-Leibler d...