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Hierarchical online planning and reinforcement learning on Taxi

Build Status

This release consists of codes for two projects:

  • The MAXQ-based hierarchical online planning algorithm: MAXQ-OP
  • The HAMQ-based hierarchical reinforcement learning algorithm: HAMQ-INT

Taxi domain:

taxi.png

Overall results:

data/reward.png

Averaged over 200 runs.

HAMQ-INT

The idea is to identify and take advantage of internal transitions within a HAM, which is represented as a partial program, for efficient hierarchical reinforcement learning. Details can be found in:

  • Efficient Reinforcement Learning with Hierarchies of Machines by Leveraging Internal Transitions, Aijun Bai, and Stuart Russell, Proceedings of the Twenty-Fifth International Joint Conference on Artificial Intelligence (IJCAI), Melbourne, Australia, August 19 - 25, 2017. [pdf][bib]

MAXQ-OP

This is the code release of MAXQ-OP algorithm on the Taxi domain as described in papers:

Files

  • maxqop.{h, cpp}: the MAXQ-OP algorithm
  • HierarchicalFSMAgent.{h, cpp}: the HAMQ-INT algorithm
  • MaxQ0Agent.{h, cpp}: the MAXQ-0 algorithm
  • MaxQQAgent.{h, cpp}: the MAXQ-Q algorithm
  • agent.h: abstract Agent class
  • state.{h, cpp}: abstract State class
  • policy.{h, cpp}: Policy classes
  • taxi.{h, cpp}: the Taxi domain
  • system.{h, cpp}: agent-environment driver code
  • table.h: tabular V/Q functions
  • dot_graph.{h, cpp}: tools to generate graphviz dot files

Dependencies

  • libboost-dev
  • libboost-program-options-dev
  • gnuplot

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