Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

A Petri net based methodology to integrate qualitative and quantitative analysis

: Wikarski, D.

Information and software technology 36 (1994), No.7, pp.435-441
ISSN: 0950-5849
Journal Article
Fraunhofer ISST ()
dependability; formal method; monitoring; object net; parallel software engineering; performance evolution; petri net; process-oriented imperative language; software validation; static analysis; testing

An innovative net-based methodology to integrate qualitative and quantitative analysis of distributed software systems is outlined, and an on-going prototype implementation of a related graphic-oriented tool kit is sketched. The proposed method combines qualitative analysis, monitoring and testing as well as quantitative analysis on the basis of a net-based intermediate representation of the distributed software system under consideration. All transformations (from the distributed software system into a first Petri net model, and between the different kinds of net models) can be made formally, and therefore automated to a high degree. The evaluation of quantitative properties is based on so-called object nets which are obtained by a property-preserving structural compression and quantitative expansion of the qualitative model. In this way, the frequency and delay attributes necessary to generate quantitative models are provided by monitoring and testing component.