The B-book: assigning programs to meanings
The B-book: assigning programs to meanings
The Unified Modeling Language user guide
The Unified Modeling Language user guide
Graphical Design of Reactive Systems
B '98 Proceedings of the Second International B Conference on Recent Advances in the Development and Use of the B Method
Contributions for Modelling UML State-Charts in B
IFM '02 Proceedings of the Third International Conference on Integrated Formal Methods
Structuring and Refinement of Class Diagrams
HICSS '99 Proceedings of the Thirty-second Annual Hawaii International Conference on System Sciences-Volume 6 - Volume 6
UML-B: Formal modeling and design aided by UML
ACM Transactions on Software Engineering and Methodology (TOSEM)
A theory of regression testing for behaviourally compatible object types: Research Articles
Software Testing, Verification & Reliability - UKTest 2005: The Third U.K. Workshop on Software Testing Research
An incremental development of the Mondex system in Event-B
Formal Aspects of Computing
Refinement, Decomposition, and Instantiation of Discrete Models: Application to Event-B
Fundamenta Informaticae - This is a SPECIAL ISSUE ON ASM'05
Documenting the Progress of the System Development
Methods, Models and Tools for Fault Tolerance
UML-B and Event-B: an integration of languages and tools
SE '08 Proceedings of the IASTED International Conference on Software Engineering
Derivation of UML class diagrams as static views of formal b developments
ICFEM'05 Proceedings of the 7th international conference on Formal Methods and Software Engineering
An open extensible tool environment for event-b
ICFEM'06 Proceedings of the 8th international conference on Formal Methods and Software Engineering
A proposal for records in event-b
FM'06 Proceedings of the 14th international conference on Formal Methods
Refinement of statemachines using event b semantics
B'07 Proceedings of the 7th international conference on Formal Specification and Development in B
Mapping object diagrams into B specifications
Methods'96 Proceedings of the 1996 international conference on Methods Integration
Systematic translation rules from ASTD to event-B
IFM'10 Proceedings of the 8th international conference on Integrated formal methods
Applying atomicity and model decomposition to a space craft system in event-B
NFM'11 Proceedings of the Third international conference on NASA Formal methods
Formal object-oriented development of a voting system test oracle
Innovations in Systems and Software Engineering
Refining nodes and edges of state machines
ICFEM'11 Proceedings of the 13th international conference on Formal methods and software engineering
Structured event-b models and proofs
ABZ'10 Proceedings of the Second international conference on Abstract State Machines, Alloy, B and Z
Verification of UML models by translation to UML-B
FMCO'10 Proceedings of the 9th international conference on Formal Methods for Components and Objects
A systematic approach to atomicity decomposition in event-b
SEFM'12 Proceedings of the 10th international conference on Software Engineering and Formal Methods
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UML-B is a `UML-like' graphical front end for Event-B that provides support for object-oriented modelling concepts. In particular, UML-B supports class diagrams and state machines, concepts that are not explicitly supported in plain Event-B. In Event-B, refinement is used to relate system models at different abstraction levels. The same abstraction-refinement concepts can also be applied in UML-B. This paper introduces the notions of refined classes and refined state machines to enable refinement of classes and state machines in UML-B. Together with these notions, a technique for moving an event between classes to facilitate abstraction is also introduced. Our work makes explicit the structures of class and state machine refinement in UML-B. The UML-B drawing tool and Event-B translator are extended to support the new refinement concepts. A case study of an auto teller machine (ATM) is presented to demonstrate application and effectiveness of refined classes and refined state machines.