Rationale for the RBAC96 family of access control models
RBAC '95 Proceedings of the first ACM Workshop on Role-based access control
Conflict analysis for management policies
Proceedings of the fifth IFIP/IEEE international symposium on Integrated network management V : integrated management in a virtual world: integrated management in a virtual world
Understanding semantic relationships
The VLDB Journal — The International Journal on Very Large Data Bases
An Information-Theoretic Definition of Similarity
ICML '98 Proceedings of the Fifteenth International Conference on Machine Learning
Access Control in Object-Oriented Database Systems - Some Approaches and Issues
Advanced Database Systems
The Amsterdam Manifesto on OCL
Object Modeling with the OCL, The Rationale behind the Object Constraint Language
The description logic handbook: theory, implementation, and applications
The description logic handbook: theory, implementation, and applications
Verbs semantics and lexical selection
ACL '94 Proceedings of the 32nd annual meeting on Association for Computational Linguistics
Modality conflicts in semantics aware access control
ICWE '06 Proceedings of the 6th international conference on Web engineering
Using information content to evaluate semantic similarity in a taxonomy
IJCAI'95 Proceedings of the 14th international joint conference on Artificial intelligence - Volume 1
Reducing OWL entailment to description logic satisfiability
Web Semantics: Science, Services and Agents on the World Wide Web
Aggregation in ontologies: practical implementations in OWL
ICWE'05 Proceedings of the 5th international conference on Web Engineering
Offline expansion of XACML policies based on p3p metadata
ICWE'05 Proceedings of the 5th international conference on Web Engineering
Business rules for semantics-aware business modelling: overview and open issues
International Journal of Web Engineering and Technology
A Semantic-Aware Attribute-Based Access Control Model for Web Services
ICA3PP '09 Proceedings of the 9th International Conference on Algorithms and Architectures for Parallel Processing
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Security is a crucial concern for commercial and mission critical applications in Web-based environments. In our model, context information associated with Access Control management policies is defined according to basic operators that can be represented using the Web Ontology Language. Standard inference procedures of Description Logics are being used to check the consistency of context information referred to by policy conditions and, more interestingly, to pre-process context information for grounding policy propagation and enabling conflict resolution. In this paper, we extend the model to encompass part-of relations between entities in context descriptions and, consequently, revise the policy propagation criteria being applied to the model to take into account the newly introduced relations. Finally, we exemplify modality conflicts arising from part-of relations, a category of extensional conflicts (i.e., inconsistencies related to individuals) that cannot be foreseen by looking at the terminology underlying context information.