Abstract
This work concerns discrete-time Markov decision chains with finite state space and bounded costs. The controller has constant risk sensitivity λ, and the performance of a control policy is measured by the corresponding risk-sensitive average cost criterion. Assuming that the optimality equation has a solution, it is shown that the value iteration scheme can be implemented to obtain, in a finite number of steps, (1) an approximation to the optimal λ-sensitive average cost with an error less than a given tolerance, and (2) a stationary policy whose performance index is arbitrarily close to the optimal value. The argument used to establish these results is based on a modification of the original model, which is an extension of a transformation introduced by Schweitzer (1971) to analyze the the risk-neutral case.
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