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On Behavioural Subtyping in LOTOS

Bowman, H. and Briscoe-Smith, C. and Derrick, J. and Strulo, B. (1997) On Behavioural Subtyping in LOTOS. In: Bowman, Howard and Derrick, John, eds. Formal Methods for Open Object-based Distributed Systems. IFIP Advances in Information and Communication Technology, 2 . Springer, Boston, Massachusetts, USA, pp. 335-351. ISBN 978-1-5041-2952-7. E-ISBN 978-0-387-35261-9. (doi:10.1007/978-0-387-35261-9_23) (KAR id:21473)


We consider how the OO notion of subtyping relates to LOTOS testing theory. In particular, we investigate which of the standard LOTOS preorders is a suitable instantiation of behavioural subtyping and argue that each of the main preorders, trace preorder, trace extension, reduction and extension, is in some way deficient. Then, in the light of pre and post condition based models of OO subtyping, we re-work the basic interpretation applied to LOTOS behaviour descriptions. We argue that this re-interpretation enables reduction to be used as an instantiation of behavioural subtyping.

Item Type: Book section
DOI/Identification number: 10.1007/978-0-387-35261-9_23
Uncontrolled keywords: Correctness Relation; Label Transition System; Process Algebra; Observable Action; Structure Operational Semantic
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Faculties > Sciences > School of Computing > Theoretical Computing Group
Faculties > Sciences > School of Computing > Systems Architecture Group
Depositing User: Mark Wheadon
Date Deposited: 29 Jul 2009 17:18 UTC
Last Modified: 09 Feb 2020 04:03 UTC
Resource URI: (The current URI for this page, for reference purposes)
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