2939 search results - page 38 / 588 » A geometric approach to aggregation |
SSD
2005
Springer
14 years 1 months ago
2005
Springer
Abstract. A top-k OLAP query groups measures with respect to some abstraction level of interesting dimensions and selects the k groups with the highest aggregate value. An example ...
SIGMOD
2010
ACM
14 years 12 days ago
2010
ACM
In this paper, we propose an online aggregation system called COSMOS (Continuous Sampling for Multiple queries in an Online aggregation System), to process multiple aggregate quer...
SIGMOD
1997
ACM
13 years 11 months ago
1997
ACM
Aggregation in traditional database systems is performed in batch mode: a query is submitted, the system processes a large volume of data over a long period of time, and, eventual...
IJAOSE
2010
13 years 4 months ago
2010
An approach for handling the complex dynamics of a multi-agent system is based on distinguishing aggregation levels. The behaviour at a given aggregation level is specified by a se...
SASN
2006
ACM
14 years 1 months ago
2006
ACM
In a large sensor network, in-network data aggregation, i.e., combining partial results at intermediate nodes during message routing, significantly reduces the amount of communic...