514 search results - page 82 / 103 » Answer Sets for Consistent Query Answering in Inconsistent D... |
WWW
2011
ACM
13 years 5 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, ...
JAR
2007
13 years 10 months ago
2007
As applications of description logics proliferate, efficient reasoning with knowledge bases containing many assertions becomes ever more important. For such cases, we developed a n...
DEXA
2007
Springer
14 years 2 months ago
2007
Springer
The two dominant costs in continuous spatial query systems are the wireless communication cost for location update, and the evaluation cost for query processing. Existing works add...
ICDE
2004
IEEE
15 years 8 days ago
2004
IEEE
XML and other types of semi-structured data are typically represented by a labeled directed graph. To speed up path expression queries over the graph, a variety of structural inde...
SIGMOD
2011
ACM
13 years 1 months ago
2011
ACM
A surprising query result is often an indication of errors in the query or the underlying data. Recent work suggests using causal reasoning to find explanations for the surprisin...