mlsanityData to 7 Oct 2026

GMAC: A Distributional Perspective on Actor-Critic Framework

arXiv 2105.11366 ↗First posted 24 May 2021cs.LGcited by 15

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Abstract (arXiv)

In this paper, we devise a distributional framework on actor-critic as a solution to distributional instability, action type restriction, and conflation between samples and statistics. We propose a new method that minimizes the Cram'er distance with the multi-step Bellman target distribution generated from a novel Sample-Replacement algorithm denoted SR(λ), which learns the correct value distribution under multiple Bellman operations. Parameterizing a value distribution with Gaussian Mixture Model further improves the efficiency and the performance of the method, which we name GMAC. We empirically show that GMAC captures the correct representation of value distributions and improves the performance of a conventional actor-critic method with low computational cost, in both discrete and continuous action spaces using Arcade Learning Environment (ALE) and PyBullet environment.

Key facts. Cited by 15 papers in the map (data through 7 Oct 2026). Builds on 23 of its 53 references that are in the map. First posted on arXiv 24 May 2021.

Builds on

23 of 53 references.

References · 23

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11 more
  1. 2020Controlling Overestimation Bias with Truncated Mixture of Continuous Distributional Quantile Criticscited by 154
  2. 2017The Cramer Distance as a Solution to Biased Wasserstein Gradientscited by 116
  3. 2019Fully Parameterized Quantile Function for Distributional Reinforcement Learningcited by 87
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  6. 2019Statistics and Samples in Distributional Reinforcement Learningcited by 62
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  8. 2018Information-Directed Exploration for Deep Reinforcement Learningcited by 52
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  10. 2020Sample-based Distributional Policy Gradientcited by 12
  11. 2018Nonlinear Distributional Gradient Temporal-Difference Learningcited by 6

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Cited by year (2026 to 7 Oct)

Citing papers per year: 2022: 6; 2023: 4; 2024: 3; 2025: 0; 2026: 2.

15 papers.

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