651 search results - page 15 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
CIKM
2006
Springer
13 years 11 months ago
2006
Springer
In this paper we introduce the distributed spatio-temporal similarity search problem: given a query trajectory Q, we want to find the trajectories that follow a motion similar to ...
WSDM
2009
ACM
14 years 2 months ago
2009
ACM
There has been considerable past work on efficiently computing top k objects by aggregating information from multiple ranked lists of these objects. An important instance of this...
CCR
2006
13 years 7 months ago
2006
Abstract-- The need for efficient computation of approximate global state lies at the heart of a wide range of problems in distributed systems. Examples include routing in the Inte...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
SEMWEB
2010
Springer
13 years 5 months ago
2010
Springer
We study the problem of SPARQL query optimization on top of distributed hash tables. Existing works on SPARQL query processing in such environments have never been implemented in a...