We show that a practical class of optimal stopping problems can be solved in at most N iterations of policy iteration. Under a lower triangularity assumption, one iteration of Gauss-Seidel value iteration yields the solution, while a subadditivity assumption implies an optimal control limit policy and an O(log N) algorithm. (C) 2012 Elsevier B.V. All rights reserved.
机构:
Turku Sch Econ & Business Adm, Dept Econ Econ Math & Stat, FIN-20500 Turku, FinlandTurku Sch Econ & Business Adm, Dept Econ Econ Math & Stat, FIN-20500 Turku, Finland