Reinforcement learning, logic and evolutionary computation : learning classifier system approach to relational reinforcement learning / Drew Mellor Mellor, Drew

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Author
Mellor, Drew
Subjects
Reinforcement learning (Machine learning); Dissertations, Academic.; Logic programming.
Summary
This article describes a learning classifier system (LCS) approach to relational reinforcement learning (RRL). The system, Foxcs-2, is a derivative of Xcs that learns rules expressed as definite clauses over first-order logic. By adopting the LCS approach, Foxcs-2, unlike many RRL systems, is a general, model-free and “tabula rasa” system. The change in representation from bit-strings in Xcs to first-order logic in Foxcs-2 necessitates modifications, described within, to support matching, covering, mutation and several other functions. Evaluation on inductive logic programming (ILP) and RRL tasks shows that the performance of Foxcs-2 is comparable to other systems. Further evaluation on RRL tasks highlights a significant advantage of Foxcs-2’s rule language: in some environments it is able to represent policies that are genuinely scalable; that is, policies that are independent of the size of the environment.
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http://trove.nla.gov.au/work/3868638
Work ID
3868638

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