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Sample-efficient Cross-Entropy Method for Real-time Planning

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arxiv 2008.06389 v1 pith:W57HVLN2 submitted 2020-08-14 cs.LG cs.ROstat.ML

Sample-efficient Cross-Entropy Method for Real-time Planning

classification cs.LG cs.ROstat.ML
keywords controlplanningcross-entropyhigh-dimensionalmethodreal-timeactionsadditions
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Trajectory optimizers for model-based reinforcement learning, such as the Cross-Entropy Method (CEM), can yield compelling results even in high-dimensional control tasks and sparse-reward environments. However, their sampling inefficiency prevents them from being used for real-time planning and control. We propose an improved version of the CEM algorithm for fast planning, with novel additions including temporally-correlated actions and memory, requiring 2.7-22x less samples and yielding a performance increase of 1.2-10x in high-dimensional control problems.

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