Object-Oriented Process Specification

Schuman, Stephen A.; Pitt, David; Byers, Paddy

doi:10.1007/978-1-4471-3534-0_2

Cited by 26 publications

(7 citation statements)

References 4 publications

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“…As mentioned earlier, we have been using an object-oriented variant (Schuman and Pitt, 1987;Schuman et al, 1989) of the formal specification language Z (Spivey, 1988a(Spivey, , 1988b. This notation provides a framework for formally specifying and reasoning about the behavior of user-defined "classes" of abstract objects.…”

Section: Modeling the Oxford System Ofmedicinementioning

confidence: 99%

Formal Specifications and Medical Decision Support Systems

Krause

Glowinski

1993

Applied Artificial Intelligence

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The techniques offormal specification and refinement of specifications into implementations are beginning to have an impact on the development of computer software. The ideal of software engineering is that programs may be proved correct with respect to their specifications. In principle, this is achievable for many applications. However, techniques for the specification and development ofAI applications are not so well defined at present. Part ofthe problem is that it is not always clear what should be specified. Motivated by an informal legal liability study, we present a requirements analysis of the aspects that should be covered by the formal specification. The discussion is focused on the specification ofa medical decision support system, but the arguments are generally valid. In particular, we will argue that it is especially important to take a more holistic approach and consider the specification of both the system and its environment.

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Section: Modeling the Oxford System Ofmedicinementioning

confidence: 99%

Formal Specifications and Medical Decision Support Systems

Krause

Glowinski

1993

Applied Artificial Intelligence

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“…This will be the set of states which satisfy the predicate of the initial state schema of an Object-Z class. state based techniques also exist [16,47]. As in [48], the basic idea used in [16] and [47] is that labels in the transition system are operation schema names together with any input/output values.…”

Section: Lts Semanticsmentioning

confidence: 99%

“…state based techniques also exist [16,47]. As in [48], the basic idea used in [16] and [47] is that labels in the transition system are operation schema names together with any input/output values. A transition is added whenever an operation is applicable at a node, which represents a particular binding of state variables.…”

Section: Lts Semanticsmentioning

confidence: 99%

A Junction Between State Based and Behavioural Specification

Bowman

Derrick

1999

Formal Methods for Open Object-Based Distributed Systems

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Abstract:Two of the dominant paradigms for formally describing and analysing 00 distributed systems are state based specification, e.g. Object-Z, and behavioural specification, e.g. process algebra. The style of specification embodied by the two paradigms is highly contrasting. With state based techniques the data state is explicitly defined while the temporal ordering of operations is left implicit, in contrast in behavioural techniques, no explicit data state definition is given while the temporal ordering of action offers is focused on. However, in order to support sophisticated software engineering principles, e.g. multi-paradigm specification, viewpoints modelling and 8ubtyping, there is now considerable interest in developing strategies for relating state based and behavioural specification paradigms.This paper serves two purposes -firstly, it reviews the existing body of work on relating these two specification paradigms and secondly, it presents some new results on the topic.In particular, we present a testing characterisation of downward simulation, which is the standard state based refinement relation and is also closely related to subtyping. Central to this characterisation is giving a behavioural interpretation to the meaning of state based operations outside their pre-conditions.

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“…in Z [17,18]. The Appendix gives a corresponding objectoriented formal specification [14,15] for our case-study. This starts with a short summary of that framework's main conventions.…”

Section: Introductionmentioning

confidence: 99%