515 search results - page 39 / 103 » Query Decomposition, Optimization and Processing in Multidat... |
79
Voted
CIKM
2010
Springer
14 years 8 months ago
2010
Springer
In recent years, there has been an explosion of publicly available RDF and OWL data sources. In order to effectively and quickly answer queries in such an environment, we present...
167
click to vote
VLDB
2007
ACM
15 years 10 months ago
2007
ACM
We investigate the problem of how to evaluate efficiently a collection of shortest path queries on massive graphs that are too big to fit in the main memory. To evaluate a shortes...
106
click to vote
WWW
2011
ACM
14 years 4 months ago
2011
ACM
The problem of answering SPARQL queries over virtual SPARQL views is commonly encountered in a number of settings, including while enforcing security policies to access RDF data, ...
CIDR
2009
14 years 10 months ago
2009
In database query processing, actual run-time conditions (e.g., actual selectivities and actual available memory) very often differ from compile-time expectations of run-time cond...
111
click to vote
PPDP
2010
Springer
14 years 8 months ago
2010
Springer
This paperdescribes the use of a powerful graph query language for querying programs, and a novel combination of transformations for generating efficient implementations of the q...