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Article type: Research Article
Authors: Doberkat, Ernst-Erich
Affiliations: Chair for Software Technology, University of Dortmund, D-44221 Dortmund, Germany. [email protected]
Note: [] Address for correspondence: Chair for Software Technology, University of Dortmund, D-44221 Dortmund, Germany
Abstract: We investigate similarities between non-deterministic and probabilistic ways of describing a system in terms of computation trees. We show that the construction of traces for both kinds of relations follows the same principles of construction. Representations of measurable trees in terms of probabilistic relations are given. This shows that stochastic relations may serve as refinements of their non-deterministic counterparts. A convexity argument formalizes the observation that non-deterministic system descriptions are underspecified when compared to probabilistic ones. The mathematical tools come essentially from the theory of measurable selections.
Keywords: Probabilistic relations, specification techniques (nondeterministic, stochastic), representation theory
Journal: Fundamenta Informaticae, vol. 66, no. 3, pp. 259-275, 2005
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