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Quantitative Relations and Approximate Process Equivalences

By Alessandra Di Pierro, Chris Hankin and Herbert Wiklicky

Abstract

We introduce a characterisation of probabilistic transition systems (PTS) in terms of linear operators on some suitably defined vector space representing the set of states. Various notions of process equivalences can then be re-formulated as abstract linear operators related to the concrete PTS semantics via a probabilistic abstract interpretation. These process equivalences can be turned into corresponding approximate notions by identifying processes whose abstract operators "differ" by a given quantity, which can be calculated as the norm of the difference operator. We argue that this number can be given a statistical interpretation in terms of the tests needed to distinguish two behaviours

Publisher: Springer Verlag
Year: 2003
OAI identifier: oai:CiteSeerX.psu:10.1.1.135.4692
Provided by: CiteSeerX
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