162 search results - page 25 / 33 » Semantics of Trust |
ECAI
2006
Springer
14 years 7 days ago
2006
Springer
Existing approaches to knowledge representation and reasoning in the context of open systems either deal with "objective" knowledge or with beliefs. In contrast, there ha...
WSDM
2010
ACM
14 years 6 months ago
2010
ACM
We consider a set of views stating possibly conflicting facts. Negative facts in the views may come, e.g., from functional dependencies in the underlying database schema. We want ...
WWW
2007
ACM
14 years 9 months ago
2007
ACM
We describe an approach designed to reduce the costs of ontology development through the use of untrained, volunteer knowledge engineers. Results are provided from an experiment i...
PODS
2005
ACM
14 years 8 months ago
2005
ACM
Abstract. We present a semantics and answer set programs for relational peer data exchange systems. When a peer answers a query, it exchanges data with other peers in order to supp...
CSE
2009
IEEE
14 years 3 months ago
2009
IEEE
Abstract—Vocabulary alignment is a main challenge in distributed access control as peers should understand each other’s policies unambiguously. Ontologies enable mutual underst...