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A Probabilistic Applied Pi-Calculus

Jean Goubault-Larrecq 1 Catuscia Palamidessi 2 Angelo Troina 2 
2 COMETE - Concurrency, Mobility and Transactions
LIX - Laboratoire d'informatique de l'École polytechnique [Palaiseau], Inria Saclay - Ile de France
Abstract : We propose an extension of the Applied Pi–calculus by introducing nondeterministic and probabilistic choice operators. The semantics of the resulting model, in which probability and nondeterminism are combined, is given by Segala's Probabilistic Automata driven by schedulers which resolve the nondeterministic choice among the probability distributions over target states. Notions of static and observational equivalence are given for the enriched calculus. In order to model the possible interaction of a process with its surrounding environment a labeled semantics is given together with a notion of weak bisimulation which is shown to coincide with the observational equivalence. Finally, we prove that results in the probabilistic framework are preserved in a purely nondeterministic setting.
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Submitted on : Sunday, December 23, 2007 - 1:45:56 AM
Last modification on : Saturday, June 25, 2022 - 7:44:44 PM
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Jean Goubault-Larrecq, Catuscia Palamidessi, Angelo Troina. A Probabilistic Applied Pi-Calculus. 5th Asian Symposium on Programming Languages and Systems (APLAS'07), Nov 2007, Singapore, Singapore. pp.175-190, ⟨10.1007/978-3-540-76637-7_12⟩. ⟨inria-00201070⟩



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