204 search results - page 5 / 41 » Indexing for Data Models with Constraints and Classes |
PVLDB
2008
13 years 6 months ago
2008
Despite the intense interest towards realizing the Semantic Web vision, most existing RDF data management schemes are constrained in terms of efficiency and scalability. Still, th...
DASFAA
2007
IEEE
14 years 1 months ago
2007
IEEE
To support secure exchanging and sharing of XML data over the Internet, a myriad of XML access control mechanisms have been proposed. In the setting of node-level fine-grained acc...
SIGIR
2009
ACM
14 years 1 months ago
2009
ACM
We investigate using topic prediction data, as a summary of document content, to compute measures of search result quality. Unlike existing quality measures such as query clarity ...
CCS
2008
ACM
13 years 9 months ago
2008
ACM
Role Engineering is a security-critical task for systems using role-based access control (RBAC). Different role-mining approaches have been proposed that attempt to automatically ...
CIVR
2008
Springer
13 years 9 months ago
2008
Springer
In information retrieval, sub-space techniques are usually used to reveal the latent semantic structure of a data-set by projecting it to a low dimensional space. Non-negative mat...