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Case-Based Identification and Reuse of Similar Formalised Behaviour

Authors:


Publication Type:

Report - MRTC

ISRN:

MDH-MRTC-17/2000-1-SE


Abstract

Formal methods are usually intended to include all the de-tails of the final system in the specifi-cation, with the aim of proving that it pos-sesses certain mathematical properties. Telecommunications features are large and complex, making detailed formal specification impractical with current technology [Mataga & Zave, 1993]. Fortunately, the behaviour they provid to telephone users is often simple enough to sketch and much of the complexity stems from details of the implementation. The principal characteristics of a service can be approximated by simple varieties of logic. We address the problem of determining these services, from a library of services accompa-nied by their behavioural approximations, which might be appropriate for reuse, by using graphical input examples to sketch the behav-iour desired and a case-based approach to identify behaviourally similar telecommunica-tions features. The CABS system can also per-form simple verifications against the input ex-amples and identify when the feature does not include all the behaviour exemplified in the in-put examples. Seventeen telephone features (call waiting, call back, etc.) have been for-malised. These telephone features are stored in the case library as cases, each consisting of a set of transition rules. Input examples for the requested behaviour enables CABS to identi-fies the corresponding formalised case.

Bibtex

@techreport{Funk233,
author = {Peter Funk},
title = {Case-Based Identification and Reuse of Similar Formalised Behaviour},
number = {ISSN 1404-3041 ISRN MDH-MRTC-17/2000-1-SE},
month = {March},
year = {2000},
url = {http://www.es.mdh.se/publications/233-}
}