A characterization of meaningful schedulers for continuous-time markov decision processes

  • Authors:
  • Nicolás Wolovick;Sven Johr

  • Affiliations:
  • Fa.M.A.F., Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, Argentina;FR 6.2 Informatik, Universität des Saarlandes, Saarbrücken, Germany

  • Venue:
  • FORMATS'06 Proceedings of the 4th international conference on Formal Modeling and Analysis of Timed Systems
  • Year:
  • 2006

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Abstract

Continuous-time Markov decision process are an important variant of labelled transition systems having nondeterminism through labels and stochasticity through exponential fire-time distributions. Nondeterministic choices are resolved using the notion of a scheduler. In this paper we characterize the class of measurable schedulers, which is the most general one, and show how a measurable scheduler induces a unique probability measure on the sigma-algebra of infinite paths. We then give evidence that for particular reachability properties it is sufficient to consider a subset of measurable schedulers. Having analyzed schedulers and their induced probability measures we finally show that each probability measure on the sigma-algebra of infinite paths is indeed induced by a measurable scheduler which proves that this class is complete.