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Poster
Learning to Explore via Meta-Policy Gradient
Tianbing Xu · Qiang Liu · Liang Zhao · Jian Peng
The performance of off-policy learning, including deep Q-learning and deep deterministic policy gradient (DDPG), critically depends on the choice of the exploration policy. Existing exploration methods are mostly based on adding noise to the on-going actor policy and can only explore \emph{local} regions close to what the actor policy dictates. In this work, we develop a simple meta-policy gradient algorithm that allows us to adaptively learn the exploration policy in DDPG. Our algorithm allows us to train flexible exploration behaviors that are independent of the actor policy, yielding a \emph{global exploration} that significantly speeds up the learning process. With an extensive study, we show that our method significantly improves the sample-efficiency of DDPG on a variety of reinforcement learning continuous control tasks.
Author Information
Tianbing Xu (Baidu Research, USA)
Qiang Liu (UT Austin)
Liang Zhao (Baidu Research USA)
Jian Peng (UIUC)
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2018 Oral: Learning to Explore via Meta-Policy Gradient »
Fri Jul 13th 08:20 -- 08:30 AM Room A1
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