This repository contains the implementation code for paper Harnessing Structures for Value-Based Planning and Reinforcement Learning (ICLR 2020, Oral).

This work proposes a generic framework that allows for exploiting the underlying low-rank structures of the state-action value function (Q function), in both planning and deep reinforcement learning. We verify empirically the wide existence of low-rank Q functions in the context of control and deep RL tasks. Specifically, we propose (1) Structured Value-based Planning (SVP), for classical stochastic control and planning tasks, and (2) Structured Value-based Deep Reinforcement Learning (SV-RL), applicable for any value-based techniques to improve performance on deep RL tasks.

The current code has been tested on Ubuntu 16.04, for both SVP and SV-RL.

• SVP: The SVP part is mainly implemented in Julia (and a small part in Python) for several classical stochastic control tasks. We use Julia version of v0.7.0, which can be downloaded here.
• SV-RL: We provide a PyTorch implementation of SV-RL for deep reinforcement learning tasks.

Note: We test SVP implementation on Julia v0.7.0, which is not the latest version (and is unmaintained now). You may choose to use later verion of Julia if needed, but we didn't test on other versions.

After installing Julia, just use the package manager within Julia to install the following dependencies:

using Pkg
Pkg.add("IJulia")
Pkg.add("PGFPlots")
Pkg.add("GridInterpolations")
Pkg.add("PyCall")
Pkg.add("ImageMagick")

You can install the dependencies for SV-RL using

pip install -r requirements.txt

• Structured Value-based Planning (SVP)
• Structured Value-based Reinforcement Learning (SV-RL)

We use the implemetation in the fancyimpute package for part of our matrix estimation algorithms. The implementation of SVP is partly based on this work.

If you find the idea or code useful for your research, please cite our paper:

@inproceedings{
  yang2020harnessing,
  title={Harnessing Structures for Value-Based Planning and Reinforcement Learning},
  author={Yuzhe Yang and Guo Zhang and Zhi Xu and Dina Katabi},
  booktitle={International Conference on Learning Representations},
  year={2020},
  url={https://openreview.net/forum?id=rklHqRVKvH}
}