MLLGSYFeb 8, 2016

Data-Efficient Reinforcement Learning in Continuous-State POMDPs

arXiv:1602.02523v112 citations
Originality Incremental advance
AI Analysis

This work addresses data-efficient learning for robotics or control systems with noisy sensors, but it is incremental as it builds on an existing method.

The paper tackled reinforcement learning in continuous-state POMDPs with observation noise by extending the PILCO algorithm to incorporate filtering during policy evaluation, achieving significantly higher performance on the cartpole swing-up task with sensor noise.

We present a data-efficient reinforcement learning algorithm resistant to observation noise. Our method extends the highly data-efficient PILCO algorithm (Deisenroth & Rasmussen, 2011) into partially observed Markov decision processes (POMDPs) by considering the filtering process during policy evaluation. PILCO conducts policy search, evaluating each policy by first predicting an analytic distribution of possible system trajectories. We additionally predict trajectories w.r.t. a filtering process, achieving significantly higher performance than combining a filter with a policy optimised by the original (unfiltered) framework. Our test setup is the cartpole swing-up task with sensor noise, which involves nonlinear dynamics and requires nonlinear control.

Foundations

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