A Demonic Approach to Information in Probabilistic Systems

  • Authors:
  • Josée Desharnais;François Laviolette;Amélie Turgeon

  • Affiliations:
  • Dép. d'informatique et de génie logiciel, Université Laval, Canada G1V 0A6;Dép. d'informatique et de génie logiciel, Université Laval, Canada G1V 0A6;Dép. d'informatique et de génie logiciel, Université Laval, Canada G1V 0A6

  • Venue:
  • CONCUR 2009 Proceedings of the 20th International Conference on Concurrency Theory
  • Year:
  • 2009

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Abstract

This paper establishes a Stone-type duality between specifications and infLMPs. An infLMP is a probabilistic process whose transitions satisfy super-additivity instead of additivity. Interestingly, its simple structure can encode a mix of probabilistic and non-deterministic behaviors. Our duality shows that an infLMP can be considered as a demonic representative of a system's information. Moreover, it carries forward a view where states are less important, and events, or properties, become the main characters, as it should be in probability theory. Along the way, we show that bisimulation and simulation are naturally interpreted in this setting, and we exhibit the interesting relationship between infLMPs and the usual probabilistic modal logics.