Sciweavers

2228 search results - page 68 / 446
» A System for Semantic Query Optimization
Sort
View
SEMWEB
2004
Springer
14 years 2 months ago
An Initial Investigation into Querying an Untrustworthy and Inconsistent Web
The Semantic Web is bound to be untrustworthy and inconsistent. In this paper, we present an initial approach for obtaining useful information in such an environment. In particular...
Yuanbo Guo, Jeff Heflin
SAC
2006
ACM
14 years 3 months ago
Imprecise RDQL: towards generic retrieval in ontologies using similarity joins
Traditional semantic web query languages support a logicbased access to the semantic web. They offer a retrieval (or reasoning) of data based on facts. On the traditional web and...
Abraham Bernstein, Christoph Kiefer
ADBIS
2007
Springer
126views Database» more  ADBIS 2007»
14 years 1 months ago
Optimal Query Mapping in Mobile OLAP
Query mapping to aggregation lattices is used in order to exploit sub-cube dependencies in multidimensional databases. It is employed in mobile OLAP dissemination systems, in order...
Ilias Michalarias, Hans-Joachim Lenz
PODC
2011
ACM
13 years 2 days ago
A nonblocking set optimized for querying the minimum value
We present the Mindicator, a set implementation customized for shared memory runtime systems. The Mindicator is optimized for constant-time querying of its minimum element, while ...
Yujie Liu, Michael F. Spear
DANTE
1999
IEEE
119views Database» more  DANTE 1999»
14 years 1 months ago
A Semantic Caching Method Based on Linear Constraints
Because performance is a crucial issue in database systems, data caching techniques have been studied in database research field, especially in client-server databases and distrib...
Yoshiharu Ishikawa, Hiroyuki Kitagawa