Boiten, Eerke (2012) Introducing extra operations in refinement. Formal Aspects of Computing, Online (1). pp. 1-13. ISSN 0934-5043.
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This paper reconsiders refinements which introduce actions on the concrete level which were not present at the abstract level. It considers a range of different basic refinement relations, covering the standard ones for formalisms like Event-B, Z, action systems, and CSP. It also describes a number of ways in which new operations may be introduced: extended interfaces, internal actions, stuttering steps, and action refinement. The main contribution of this paper is in exploring the interaction between those two dimensions. In particular, it shows how the "refining skip" method is incompatible with failures-based refinement relations, and consequently some decisions in designing Event-B refinement are more entangled than previously highlighted.
|Uncontrolled keywords:||Refinement, action refinement, stuttering steps, ASM, Event-B, Z, internal operations, weak refinement, granularity, perspicuity, divergence.|
|Subjects:||Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Computing|
|Depositing User:||Eerke Boiten|
|Date Deposited:||26 Oct 2012 07:53|
|Last Modified:||28 Mar 2013 10:21|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/31991 (The current URI for this page, for reference purposes)|
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