651 search results - page 128 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
MIDDLEWARE
2007
Springer
14 years 1 months ago
2007
Springer
Many wireless sensor network protocols are employing gossipbased message dissemination, where nodes probabilistically forward messages, to reduce message overhead. We are concerne...
SPAA
2006
ACM
14 years 1 months ago
2006
ACM
Consider a network in which a collection of source nodes maintain and periodically update data objects for a collection of sink nodes, each of which periodically accesses the data...
WOWMOM
2005
ACM
14 years 1 months ago
2005
ACM
Both Mobile Ad Hoc Networks (MANETs) and Peer-toPeer (P2P) Networks are decentralized and self-organizing networks with dynamic topology and responsible for routing queries in a d...
SAG
2004
Springer
14 years 1 months ago
2004
Springer
Grid workflows can be seen as special scientific workflows involving high performance and/or high throughput computational tasks. Much work in grid workflows has focused on improvi...
XSYM
2004
Springer
14 years 1 months ago
2004
Springer
A key step in the optimization of declarative queries over XML data is estimating the selectivity of path expressions, i.e., the number of elements reached by a specific navigatio...