27756 search results - page 51 / 5552 » Process Query Systems |
SEMWEB
2010
Springer
13 years 7 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...
SIGMOD
2009
ACM
14 years 10 months ago
2009
ACM
With the proliferation of the RDF data format, engines for RDF query processing are faced with very large graphs that contain hundreds of millions of RDF triples. This paper addre...
VLDB
2000
ACM
14 years 1 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, ...
ICDE
2009
IEEE
14 years 4 months ago
2009
IEEE
— Existing stream processing systems are optimized for a specific metric, which may limit their applicability to diverse applications and environments. This paper presents XFlow...
EDBT
2002
ACM
14 years 10 months ago
2002
ACM
Existing work on multiway spatial joins focuses on the retrieval of all exact solutions with no time limit for query processing. Depending on the query and data properties, however...