Title
The Option Keyboard: Combining Skills in Reinforcement Learning
Abstract
The ability to combine known skills to create new ones may be crucial in the solution of complex reinforcement learning problems that unfold over extended periods. We argue that a robust way of combining skills is to define and manipulate them in the space of pseudo-rewards (or "cumulants"). Based on this premise, we propose a framework for combining skills using the formalism of options. We show that every deterministic option can be unambiguously represented as a cumulant defined in an extended domain. Building on this insight and on previous results on transfer learning, we show how to approximate options whose cumulants are linear combinations of the cumulants of known options. This means that, once we have learned options associated with a set of cumulants, we can instantaneously synthesise options induced by any linear combination of them, without any learning involved. We describe how this framework provides a hierarchical interface to the environment whose abstract actions correspond to combinations of basic skills. We demonstrate the practical benefits of our approach in a resource management problem and a navigation task involving a quadrupedal simulated robot.
Year
Venue
Keywords
2019
ADVANCES IN NEURAL INFORMATION PROCESSING SYSTEMS 32 (NIPS 2019)
reinforcement learning,transfer learning,basic skills,linear combinations
Field
DocType
Volume
Computer science,Human–computer interaction,Artificial intelligence,Machine learning,Reinforcement learning
Conference
32
ISSN
Citations 
PageRank 
1049-5258
1
0.36
References 
Authors
0
11
Name
Order
Citations
PageRank
André Barreto1125.65
diana borsa2115.00
Hou, Shaobo310.70
Gheorghe Comanici411.37
Aygün, Eser510.36
Hamel, Philippe610.36
Toyama, Daniel710.36
Jonathan J Hunt847821.61
Shibl Mourad991.05
David Silver108252363.86
Doina Precup112829221.83