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Query: faculty: "FNWI" and publication year: "2008"

AuthorsC. Dimitrakakis, M.G. Lagoudakis
TitleRollout sampling approximate policy iteration
JournalMACH LEARN
Volume72
Year2008
Issue3
Pages157-171
ISSN08856125
FacultyFaculty of Science
Institute/dept.FNWI: Informatics Institute (II)
AbstractSeveral researchers have recently investigated the connection between reinforcement learning and classification. We are motivated by proposals of approximate policy iteration schemes without value functions, which focus on policy representation using classifiers and address policy learning as a supervised learning problem. This paper proposes variants of an improved policy iteration scheme which addresses the core sampling problem in evaluating a policy through simulation as a multi-armed bandit machine. The resulting algorithm offers comparable performance to the previous algorithm achieved, however, with significantly less computational effort. An order of magnitude improvement is demonstrated experimentally in two standard reinforcement learning domains: inverted pendulum and mountain-car.
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