2022

Upside-Down Reinforcement Learning Can Diverge in Stochastic Environments With Episodic Resets

Štrupl, Miroslav, Faccio, Francesco, Ashley, Dylan R. et al.

Understand

Upside-Down Reinforcement Learning (UDRL) is an approach for solving RL problems that does not require value functions and uses only supervised learning, where the targets for given inputs in a dataset do not change over time.

  • Ghosh et al.
  • proved that Goal-Conditional Supervised Learning (GCSL) -- which can be viewed as a simplified version of UDRL -- optimizes a lower bound on goal-reaching performance.
  • This raises expectations that such algorithms may enjoy guaranteed convergence to the optimal policy in arbitrary environments, similar to certain well-known traditional RL algorithms.

Built on

  • Markov Decision Processes: Discrete Stochastic Dynamic Programming

    Martin L Puterman · 2014

    Earlier work this paper cites.

  • Hindsight experience replay, 2018

    Marcin Andrychowicz, Filip Wolski, Alex Ray, Jonas Schneider, Rachel Fong, Peter Welinder, Bob McGrew, Josh Tobin, Pieter Abbeel, and Wojciech Zaremba · 2018

    Earlier work this paper cites.

Similar

  • Learning to reach goals via iterated supervised learning, 2019

    Dibya Ghosh, Abhishek Gupta, Ashwin Reddy, Justin Fu, Coline Devin, Benjamin Eysenbach, and Sergey Levine · 2019

    Cited alongside, same era.

  • Reinforcement learning upside down: Don’t predict rewards – just map them to actions, 2019

    Juergen Schmidhuber · 2019

    Cited alongside, same era.

Then

  • Training agents using upside-down reinforcement learning, 2019

    Rupesh Kumar Srivastava, Pranav Shyam, Filipe Mutz, Wojciech Jaśkowski, and Jürgen Schmidhuber · 2019

    Later among the works it cites.

  • Reward-weighted regression converges to a global optimum

    Original

    Miroslav Strupl, Francesco Faccio, Dylan R. Ashley, Rupesh Kumar Srivastava, and Jürgen Schmidhuber · 2021

    Later among the works it cites.

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