Title
Time-Bounded Reachability in Tree-Structured QBDs by Abstraction
Abstract
This paper studies quantitative model checking of infinite tree-like (continuous-time) Markov chains. These tree-structured quasi-birth death processes are equivalent to probabilistic pushdown automata and recursive Markov chains and are widely used in the field of performance evaluation. We determine time-bounded reachability probabilities in these processes ---which with direct methods, i.e., uniformization, results in an exponential blow-up--- by applying abstraction. We contrast abstraction based on Markov decision processes (MDPs) and interval-based abstraction; study various schemes to partition the state space, and empirically show their influence on the accuracy of the obtained reachability probabilities. Results show that grid-like schemes, in contrast to chain- and tree-like ones, yield extremely precise approximations for rather coarse abstractions.
Year
DOI
Venue
2011
10.1109/QEST.2009.9
Perform. Eval.
Keywords
DocType
Volume
continuous time markov chain,markov decision process,reachability,tree structure,state space,queueing theory,direct method,model checking,markov chain,abstraction,markov chains,pushdown automata
Journal
68
Issue
ISSN
Citations 
2
0166-5316
2
PageRank 
References 
Authors
0.40
18
4
Name
Order
Citations
PageRank
Daniel Klink1723.40
Anne Remke217523.96
Boudewijn R. Haverkort31205117.45
Joost-Pieter Katoen44444289.65