Title
Stochastic Timed Automata.
Abstract
A stochastic timed automaton is a purely stochastic process defined on a timed automaton, in which both delays and discrete choices are made randomly. We study the almost-sure model-checking problem for this model, that is, given a stochastic timed automaton A and a property phi, we want to decide whether A satisfies phi with probability 1. In this paper, we identify several classes of automata and of properties for which this can be decided. The proof relies on the construction of a finite abstraction, called the thick graph, that we interpret as a finite Markov chain, and for which we can decide the almost-sure model-checking problem. Correctness of the abstraction holds when automata are almost-surely fair, which we show, is the case for two large classes of systems, singleclock automata and so-called weak-reactive automata. Techniques employed in this article gather tools from real-time verification and probabilistic verification, as well as topological games played on timed automata.
Year
DOI
Venue
2014
10.2168/LMCS-10(4:6)2014
LOGICAL METHODS IN COMPUTER SCIENCE
Keywords
Field
DocType
Timed automata,Model checking,Probability,Topology
Discrete mathematics,Quantum finite automata,Automata theory,Deterministic automaton,Mobile automaton,Computer science,Theoretical computer science,Timed automaton,Stochastic cellular automaton,Probabilistic automaton,ω-automaton
Journal
Volume
Issue
ISSN
10
4
1860-5974
Citations 
PageRank 
References 
9
0.50
16
Authors
7
Name
Order
Citations
PageRank
Nathalie Bertrand125017.84
Patricia Bouyer273537.19
Thomas Brihaye346035.91
Quentin Menet4182.02
Christel Baier53053185.85
Marcus Größer633418.23
Marcin Jurdzinski742629.31