Parallel program design: a foundation
Parallel program design: a foundation
Conflicts in Policy-Based Distributed Systems Management
IEEE Transactions on Software Engineering
Resource access control in systems of mobile agents
Information and Computation
Feature Interactions in Telecommunications and Software Systems VI
Feature Interactions in Telecommunications and Software Systems VI
Mark, a Reasoning Kit for Mobility
Automated Software Engineering
Feature interaction: a critical review and considered forecast
Computer Networks: The International Journal of Computer and Telecommunications Networking
Proceedings of the International Workshop on Policies for Distributed Systems and Networks
POLICY '01 Proceedings of the International Workshop on Policies for Distributed Systems and Networks
Use of Logic to Describe Enhanced Communications Services
FORTE '02 Proceedings of the 22nd IFIP WG 6.1 International Conference Houston on Formal Techniques for Networked and Distributed Systems
The Ponder Policy Specification Language
POLICY '01 Proceedings of the International Workshop on Policies for Distributed Systems and Networks
TIME '02 Proceedings of the Ninth International Symposium on Temporal Representation and Reasoning (TIME'02)
Utilising the Event Calculus for Policy Driven Adaptation on Mobile Systems
POLICY '02 Proceedings of the 3rd International Workshop on Policies for Distributed Systems and Networks (POLICY'02)
A System to Specify and Manage Multipolicy Access Control Models
POLICY '02 Proceedings of the 3rd International Workshop on Policies for Distributed Systems and Networks (POLICY'02)
Methods for Conflict Resolution in Policy-Based Management Systems
EDOC '03 Proceedings of the 7th International Conference on Enterprise Distributed Object Computing
An Artificial Intelligence Perspective on Autonomic Computing Policies
POLICY '04 Proceedings of the Fifth IEEE International Workshop on Policies for Distributed Systems and Networks
Feature interaction in policies
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Directions in feature interaction research
A compositional framework for access control policies enforcement
Proceedings of the 2003 ACM workshop on Formal methods in security engineering
Formal model and policy specification of usage control
ACM Transactions on Information and System Security (TISSEC)
Policy Support for Business-oriented Web Service Management
LA-WEB '06 Proceedings of the Fourth Latin American Web Congress
Logic-based detection of conflicts in APPEL policies
FSEN'07 Proceedings of the 2007 international conference on Fundamentals of software engineering
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Policies are used to describe rules that are employed to modify (often distributed) system behaviour at runtime. Typically policies are created by many different people and there are many policies leading naturally to inconsistency between the policies, a problem that has been recognised and termed policy conflict. We present a novel formal semantics for distributed policies expressed in the APPEL language (so far APPEL only had an informal semantics and a recently defined formal semantics without distribution of policies). The semantics is expressed in ΔDSTL(x), an extension of temporal logic to deal with global applications: it includes modalities to localize properties to system components, an operator to deal with events, and temporal modalities à la Unity. A further contribution of the paper is the development of semantics based techniques to detect policy conflict and a consideration of conflict resolution.