Specification and Analysis of Soft Real-Time Systems: Quantity and Quality

D'Argenio, Pedro R. and Katoen, Joost-Pieter and Brinksma, Ed (1999) Specification and Analysis of Soft Real-Time Systems: Quantity and Quality. In: 20th IEEE Real-Time Systems Symposium, 1-3 Dec. 1999 , Phoenix, Arizona.

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Abstract:	This paper presents a process algebra for specifying soft real-time constraints in a compositional way. For these soft constraints we take a stochastic point of view and allow arbitrary probability distributions to express delays of activities. The semantics of this process algebra is given in terms of stochastic automata, a variant of timed automata where clocks are initialised randomly and run backwards. To analyse quantitative properties, an algorithm is presented for the on-the-fly generation of a discrete-event simulation model from a process algebra specification. On the qualitative side, a symbolic technique for classical reachability analysis of stochastic automata is presented. As a result a unifying framework for the specification and analysis of quantitative and qualitative properties is obtained. We discuss an implementation of both analytic methods and specify and analyse a fault-tolerant multi-processor system
Item Type:	Conference or Workshop Item
Copyright:	©1999 IEEE
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Formal Methods and Tools (FMT)
Link to this item:	http://purl.utwente.nl/publications/19086
Official URL:	http://dx.doi.org/10.1109/REAL.1999.818832
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