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Annals of Operations Research

, Volume 199, Issue 1, pp 193–214

# Illustrated review of convergence conditions of the value iteration algorithm and the rolling horizon procedure for average-cost MDPs

Article

## Abstract

This paper is concerned with the links between the Value Iteration algorithm and the Rolling Horizon procedure, for solving problems of stochastic optimal control under the long-run average criterion, in Markov Decision Processes with finite state and action spaces. We review conditions of the literature which imply the geometric convergence of Value Iteration to the optimal value. Aperiodicity is an essential prerequisite for convergence. We prove that the convergence of Value Iteration generally implies that of Rolling Horizon. We also present a modified Rolling Horizon procedure that can be applied to models without analyzing periodicity, and discuss the impact of this transformation on convergence. We illustrate with numerous examples the different results. Finally, we discuss rules for stopping Value Iteration or finding the length of a Rolling Horizon. We provide an example which demonstrates the difficulty of the question, disproving in particular a conjectured rule proposed by Puterman.

## Keywords

Markov decision problems Value iteration Heuristic methods Rolling horizon

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## Copyright information

© Springer Science+Business Media, LLC 2012

## Authors and Affiliations

• Eugenio Della Vecchia
• 1
• Silvia Di Marco
• 1
Email author
• Alain Jean-Marie
• 2
1. 1.CONICET-UNRRosarioArgentina
2. 2.INRIA-LIRMMMontpellierFrance