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A semimartingale characterization of average optimal stationary policies for Markov decision processes

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  • Quanxin Zhu
  • Xianping Guo

Abstract

This paper deals with discrete-time Markov decision processes with Borel state and action spaces. The criterion to be minimized is the average expected costs, and the costs may have neither upper nor lower bounds. In our former paper (to appear in Journal of Applied Probability), weaker conditions are proposed to ensure the existence of average optimal stationary policies. In this paper, we further study some properties of optimal policies. Under these weaker conditions, we not only obtain two necessary and sufficient conditions for optimal policies, but also give a semimartingale characterization of an average optimal stationary policy.

Suggested Citation

  • Quanxin Zhu & Xianping Guo, 2006. "A semimartingale characterization of average optimal stationary policies for Markov decision processes," International Journal of Stochastic Analysis, Hindawi, vol. 2006, pages 1-8, April.
    • Handle: RePEc:hin:jnijsa:081593
    DOI: 10.1155/JAMSA/2006/81593
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