Revisiting Discrete Soft Actor-Critic
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Abstract (arXiv)
We study the adaption of Soft Actor-Critic (SAC), which is considered as a state-of-the-art reinforcement learning (RL) algorithm, from continuous action space to discrete action space. We revisit vanilla discrete SAC and provide an in-depth understanding of its Q value underestimation and performance instability issues when applied to discrete settings. We thereby propose Stable Discrete SAC (SDSAC), an algorithm that leverages entropy-penalty and double average Q-learning with Q-clip to address these issues. Extensive experiments on typical benchmarks with discrete action space, including Atari games and a large-scale MOBA game, show the efficacy of our proposed method. Our code is at: https://github.com/coldsummerday/SD-SAC.git.
Key facts. Cited by 11 papers in the map (data through 7 Oct 2026). Builds on 28 of its 34 references that are in the map. First posted on arXiv 21 Sep 2022.
Builds on
28 of 34 references.
References · 28
- 2017Proximal Policy Optimization Algorithmscited by 14,441
- 2018Soft Actor-Critic: Off-Policy Maximum Entropy Deep Reinforcement Learning with a Stochastic Actorcited by 4,635
- 2015Continuous control with deep reinforcement learningcited by 3,279
- 2013Playing Atari with Deep Reinforcement Learningcited by 3,211
- 2015Trust Region Policy Optimizationcited by 2,503
- 2018Addressing Function Approximation Error in Actor-Critic Methodscited by 2,302
- 2016Asynchronous Methods for Deep Reinforcement Learningcited by 2,218
- 2015Deep Reinforcement Learning with Double Q-learningcited by 1,704
- 2018Soft Actor-Critic Algorithms and Applicationscited by 1,179
- 2017Visualizing the Loss Landscape of Neural Netscited by 1,126
- 2017Rainbow: Combining Improvements in Deep Reinforcement Learningcited by 774
- 2017A Distributional Perspective on Reinforcement Learningcited by 743
16 more
- 2018Maximum a Posteriori Policy Optimisationcited by 318
- 2019Soft Actor-Critic for Discrete Action Settingscited by 161
- 2019Mastering Complex Control in MOBA Games with Deep Reinforcement Learningcited by 150
- 2019Better Exploration with Optimistic Actor-Criticcited by 88
- 2020Distributional Soft Actor-Critic: Off-Policy Reinforcement Learning for Addressing Value Estimation Errorscited by 80
- 2020Towards Playing Full MOBA Games with Deep Reinforcement Learningcited by 78
- 2019Improving Exploration in Soft-Actor-Critic with Normalizing Flows Policiescited by 37
- 2021Training Larger Networks for Deep Reinforcement Learningcited by 37
- 2020Softmax Deep Double Deterministic Policy Gradientscited by 31
- 2022Honor of Kings Arena: an Environment for Generalization in Competitive Reinforcement Learningcited by 27
- 2020Supervised Learning Achieves Human-Level Performance in MOBA Games: A Case Study of Honor of Kingscited by 18
- 2020Meta-SAC: Auto-tune the Entropy Temperature of Soft Actor-Critic via Metagradientcited by 14
- 2020Which Heroes to Pick? Learning to Draft in MOBA Games with Neural Networks and Tree Searchcited by 10
- 2021Target Entropy Annealing for Discrete Soft Actor-Criticcited by 10
- 2021Improved Soft Actor-Critic: Mixing Prioritized Off-Policy Samples with On-Policy Experiencecited by 8
- 2020Off-policy Maximum Entropy Reinforcement Learning : Soft Actor-Critic with Advantage Weighted Mixture Policy(SAC-AWMP)cited by 5
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Citing papers per year: 2023: 5; 2024: 3; 2025: 2; 2026: 1.
11 papers.
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- 2023Automatic Truss Design with Reinforcement Learningcited by 0
- 2023DSAC-C: Constrained Maximum Entropy for Robust Discrete Soft-Actor Criticcited by 0
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- 2025Generalizing Beyond Suboptimality: Offline Reinforcement Learning Learns Effective Scheduling through Random Solutions12 Sep 2025
- 2024DR-MPC: Deep Residual Model Predictive Control for Real-world Social Navigation14 Oct 2024
- 2024Generalizing soft actor-critic algorithms to discrete action spaces8 Jul 2024
- 2024ROER: Regularized Optimal Experience Replay4 Jul 2024
- 2023DSAC-C: Constrained Maximum Entropy for Robust Discrete Soft-Actor Critic26 Oct 2023
- 2023Probabilistic Generative Modeling for Procedural Roundabout Generation for Developing Countries5 Oct 2023
- 2023Subwords as Skills: Tokenization for Sparse-Reward Reinforcement Learning8 Sep 2023
- 2023Automatic Truss Design with Reinforcement Learning27 Jun 2023
- 2023Utilizing Reinforcement Learning for de novo Drug Design30 Mar 2023