Title
Second-order Markov reward models driven by QBD processes
Abstract
Second-order reward models are an important class of models for evaluating the performance of real-life systems in which the reward measure fluctuates according to some underlying noise. These models consist of a Markov chain driving the evolution of the system, and a continuous reward variable representing its performance. Thus far, only models with a finite number of states have been studied. We consider second-order reward models driven by Quasi-birth-and-death processes, a class of block-structured Markov chains with infinitely many states. We derive the expressions for the Laplace-Stieltjes transforms of the accumulated reward and demonstrate how they can be efficiently evaluated. We use our results to analyse a simple example and, in doing so, show that the second-order feature can make a significant difference to the accumulated reward. The inclusion of the second-order feature also creates new difficulties which require the development of new conditions in the analysis.
Year
DOI
Venue
2012
10.1016/j.peva.2012.05.002
Perform. Eval.
Keywords
Field
DocType
second-order markov reward model,finite number,second-order reward model,block-structured markov chain,reward measure,new difficulty,continuous reward variable,second-order feature,important class,markov chain,new condition,brownian motion
Mathematical optimization,Finite set,Expression (mathematics),Computer science,Markov chain,Brownian motion
Journal
Volume
Issue
ISSN
69
9
0166-5316
Citations 
PageRank 
References 
0
0.34
9
Authors
3
Name
Order
Citations
PageRank
nigel g bean14710.77
Małgorzata M. O'reilly282.59
Yong Ren300.34