Boiten, E.A. and Derrick, J. (1998) IO - refinement in Z. In: Evans, A. and Duke, D. and Clark, T., eds. 3rd Northern Formal MethodsWorkshop, 1998. Electronic Workshops in Computing. Springer Verlag ISBN 1-902505-14-X.
We present a generalisation of data refinement in Z, called IO-refinement, that allows changes in input and output parameters of operations. Several informal motivations for the desirability of such a refinement relation are given, followed by a formal derivation that demonstrates its theoretical soundness. It is proved that IO-refinement indeed generalizes data refinement. Several theorems are presented that give sufficient conditions for IO-refinement to hold in simpler situations, e.g. just adding inputs and outputs. Some examples of the use of IO-refinement are also given. http://www1.bcs.org.uk/DocsRepository/02700/2702/boiten.pdf on BCS website; see also chapter 10 in /pubs/2001/1200/.
|Item Type:||Conference or workshop item (Paper)|
|Uncontrolled keywords:||data refinement, Z, interface refinement, input/output|
|Subjects:||Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Computing > Theoretical Computing Group
Faculties > Science Technology and Medical Studies > School of Computing > Systems Architecture Group
|Depositing User:||Mark Wheadon|
|Date Deposited:||25 Aug 2009 15:46|
|Last Modified:||06 Sep 2011 03:59|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/21600 (The current URI for this page, for reference purposes)|
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