191 search results - page 1 / 39 » Online Aggregation over Trees |
IPPS
2007
IEEE
13 years 12 months ago
2007
IEEE
Consider a distributed network with nodes arranged in a tree, and each node having a local value. We consider the problem of aggregating values (e.g., summing values) from all nod...
SIGMOD
2010
ACM
13 years 10 months 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...
VLDB
2000
ACM
13 years 9 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, ...
CCR
2004
13 years 5 months ago
2004
Peer-to-peer (P2P) networks represent an effective way to share information, since there are no central points of failure or bottleneck. However, the flip side to the distributive...
FQAS
2009
Springer
14 years 3 days ago
2009
Springer
Abstract. Controlled languages (CLs) are ambiguity-free subsets of natural languages such as English offering a good trade-off between the formal rigor of ontology and query langua...