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Conference Papers Year : 2021

Taylor expansion of discount factors

Mark Rowland
  • Function : Author
Rémi Munos
  • Function : Author
Michal Valko


In practical reinforcement learning (RL), the discount factor used for estimating value functions often differs from that used for defining the evaluation objective. In this work, we study the effect that this discrepancy of discount factors has during learning, and discover a family of objectives that interpolate value functions of two distinct discount factors. Our analysis suggests new ways for estimating value functions and performing policy optimization updates, which demonstrate empirical performance gains. This framework also leads to new insights on commonly-used deep RL heuristic modifications to policy optimization algorithms.
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Dates and versions

hal-03289295 , version 1 (16-07-2021)


  • HAL Id : hal-03289295 , version 1


Yunhao Tang, Mark Rowland, Rémi Munos, Michal Valko. Taylor expansion of discount factors. International Conference on Machine Learning, Jul 2021, Vienna / Virtual, Austria. ⟨hal-03289295⟩
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