3047 search results - page 158 / 610 » Aggregation functions: Means |
ICC
2007
IEEE
14 years 3 months ago
2007
IEEE
We propose a Polynomial-based scheme that addresses the problem of Event Region Detection (PERD) for wireless sensor networks (WSNs). Nodes of an aggregation tree perform function ...
ICSOC
2007
Springer
14 years 3 months ago
2007
Springer
Abstract. Service-oriented computing promotes the construction of applications by composing distributed services that are advertised in an open service market. In such an environme...
GECCO
2005
Springer
14 years 2 months ago
2005
Springer
During the optimization of a constrained problem using evolutionary algorithms (EAs), an individual in the population can be described using three important properties, i.e., obje...
VLDB
2005
ACM
14 years 2 months ago
2005
ACM
The largest databases in use today are so large that answering a query exactly can take minutes, hours, or even days. One way to address this problem is to make use of approximati...
SIGMOD
2000
ACM
14 years 1 months ago
2000
ACM
We investigate the problem of using materialized views to answer SQL queries. We focus on modern decision-support queries, which involve joins, arithmetic operations and other (po...