Introduction to the ISO specification language LOTOS
Computer Networks and ISDN Systems - Special Issue: Protocol Specification and Testing
Restoring the concept of observability in E-LOTOS
Computer Standards & Interfaces
Pocess algebra with action dependencies
Acta Informatica
Proceedings of the IFIP TC6/WG6.1 Thirteenth International Symposium on Protocol Specification, Testing and Verification XIII
Syntactic Action Refinement in Presence of Multiway Synchronisation
Proceedings of the International Workshop on Semantics of Specification Languages (SoSL)
Action Refinement Applied to Late Decisions
Formal Aspects of Computing
Enhanced event structures: Towards a true concurrency semantics for E-LOTOS
Computer Standards & Interfaces
Towards weak sequencing for E-LOTOS
Computer Standards & Interfaces
Action Refinement for Real-Time Concurrent Processes with Urgency
Electronic Notes in Theoretical Computer Science (ENTCS)
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Action refinement is an important operation in the hierarchical synthesis of concurrent systems. We propose an action refinement operator for E-LOTOS, a standard process-algebraic language for formal specification of real-time, concurrent and reactive systems. As the first step towards giving E-LOTOS a multitude of refinement operators supporting a variety of strategies for event relationship inheritance, we propose an operator which seems both useful and simple to implement. When the operator is applied to an E-LOTOS process, it modifies its enhanced event structure, i.e. its recently defined true concurrency model. The operator allows multiple alternative implementations even for urgent events and properly reflects the fact that gate actions of E-LOTOS processes are in the general case abstractions of distributed data generation procedures.