On-line Discovery of Temporal-Difference Networks

author: Takaki Makino, Division of Project Coordinate, University of Tokyo
published: Aug. 4, 2008,   recorded: July 2008,   views: 3089


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We present an algorithm for on-line, incremental discovery of temporal-difference (TD) networks. The key contribution is the establishment of three criteria to expand a node in TD network: a node is expanded when the node is well-known, independent, and has a prediction error that requires further explanation. Since none of these criteria requires centralized calculation operations, they are easily computed in a parallel and distributed manner, and scalable for bigger problems compared to other discovery methods of predictive state representations. Through computer experiments, we demonstrate the empirical effectiveness of our algorithm.

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