Option Encoder: A Framework for Discovering a Policy Basis in Reinforcement Learning
- Indian Institute of Technology Madras（印度理工学院马德拉斯分校）
- Robert Bosch Centre for Data Science and AI（罗伯特·博世数据科学与人工智能中心）
- University of Pennsylvania（宾夕法尼亚大学）
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英文摘要：
Option discovery and skill acquisition frameworks are integral to the functioning of a Hierarchically organized Reinforcement learning agent. However, such techniques often yield a large number of options or skills, which can potentially be represented succinctly by filtering out any redundant information. Such a reduction can reduce the required computation while also improving the performance on a target task. In order to compress an array of option policies, we attempt to find a policy basis that accurately captures the set of all options. In this work, we propose Option Encoder, an auto-encoder based framework with intelligently constrained weights, that helps discover a collection of basis policies. The policy basis can be used as a proxy for the original set of skills in a suitable hierarchically organized framework. We demonstrate the efficacy of our method on a collection of grid-worlds and on the high-dimensional Fetch-Reach robotic manipulation task by evaluating the obtained policy basis on a set of downstream tasks.
