2845 search results - page 36 / 569 » Constraints over Ontologies |
AAAI
2007
13 years 11 months ago
2007
Efficient query answering over ontologies is one of the most useful and important services to support Semantic Web applications. Approximation has been identified as a potential...
SACMAT
2009
ACM
14 years 3 months ago
2009
ACM
XACML does not natively support RBAC and even the specialized XACML profiles are not able to support many relevant constraints such as static and dynamic separation of duty. Exte...
SIGMOD
2005
ACM
14 years 9 months ago
2005
ACM
One of the most challenging problems in the healthcare domain is providing interoperability among healthcare information systems. In order to address this problem, we propose the ...
CORR
2007
Springer
13 years 8 months ago
2007
Springer
We address the problem of answering Web ontology queries efficiently. An ontology is formalized as a Deductive Ontology Base (DOB), a deductive database that comprises the ontology...
ESWS
2009
Springer
14 years 3 months ago
2009
Springer
Abstract. Ontology matching has become an important field of research over the last years. Although many different approaches have been proposed, only few of them are committed t...