The Z notation: a reference manual
The Z notation: a reference manual
Refinement in Z and object-Z: foundations and advanced applications
Refinement in Z and object-Z: foundations and advanced applications
Retrenchment, Refinement, and Simulation
ZB '00 Proceedings of the First International Conference of B and Z Users on Formal Specification and Development in Z and B
Loose Specification and Refinement in Z
ZB '02 Proceedings of the 2nd International Conference of B and Z Users on Formal Specification and Development in Z and B
From z to c: illustration of a rigorous development method (specification hierarchy)
From z to c: illustration of a rigorous development method (specification hierarchy)
Electronic Notes in Theoretical Computer Science (ENTCS)
General Refinement, Part Two: Flexible Refinement
Electronic Notes in Theoretical Computer Science (ENTCS)
| Hi-index | 0.00 |
We describe a method for combining formal program development with a disciplined and documented way of introducing realistic compromises, for example necessitated by resource bounds. Idealistic specifications are identified with the limits of sequences of more “realistic” specifications, and such sequences can then be refined in their entirety. Compromises amount to focusing the attention on a particular element of the sequence instead of the sequence as a whole. This method addresses the problem that initial formal specifications can be abstract or complete but rarely both. Various potential application areas are sketched, some illustrated with examples. Key research issues are found in identifying metric spaces and properties that make them usable for refinement using approximations.