Towards a theory of declarative knowledge
Foundations of deductive databases and logic programming
On the declarative semantics of deductive databases and logic programs
Foundations of deductive databases and logic programming
A fine-grained access control system for XML documents
ACM Transactions on Information and System Security (TISSEC)
Ρ-Queries: enabling querying for semantic associations on the semantic web
WWW '03 Proceedings of the 12th international conference on World Wide Web
Concept-level access control for the Semantic Web
Proceedings of the 2003 ACM workshop on XML security
A possible simplification of the semantic web architecture
Proceedings of the 13th international conference on World Wide Web
A logic-based framework for attribute based access control
Proceedings of the 2004 ACM workshop on Formal methods in security engineering
Ontology guided XML security engine
Journal of Intelligent Information Systems - Special issue: Database and applications security
Secure resource description framework: an access control model
Proceedings of the eleventh ACM symposium on Access control models and technologies
Query Rewriting for Access Control on Semantic Web
SDM '08 Proceedings of the 5th VLDB workshop on Secure Data Management
A Secure Mediator for Integrating Multiple Level Access Control Policies
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II
An Introduction to Authorization Conflict Problem in RDF Access Control
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II
Specification and validation of enterprise information security policies
Proceedings of the CUBE International Information Technology Conference
A graph-based formalism for controlling access to a digital library ontology
CISIM'12 Proceedings of the 11th IFIP TC 8 international conference on Computer Information Systems and Industrial Management
Access Control on Semantic Web Data Using Query Rewriting
International Journal of Organizational and Collective Intelligence
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Traditional discretionary access control, without data alteration operators, applied directly on ontologies can result in revealing unintended information because ontologies contain meta-information about objects. As an alternative we provide a constraint logic programming based policy language that can extract, rove or desensitize sensitive concepts in ontologies prior to requested disclosures. Our policies are stratified Horn clauses with constructive negation, and our constraint syst uses a finitary syst of ZF sets developed by Dovier et al. - and consequently, admits a three-valued Kripke-Kleene santics. Consequently, it is suitable for safeguarding meta-information stored on the Santic web using OWL. We show how our three-valued santics faithfully represents traditional OWL santics.