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Maximum Entropy Reinforcement Learning with Diffusion Policy

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arxiv 2502.11612 v3 pith:NSXBVJCV submitted 2025-02-17 cs.LG cs.AI

Maximum Entropy Reinforcement Learning with Diffusion Policy

classification cs.LG cs.AI
keywords policymaxentdiffusionentropyexplorationgaussianmaxentdpcomplex
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Soft Actor-Critic (SAC) algorithm with a Gaussian policy has become a mainstream implementation for realizing the Maximum Entropy Reinforcement Learning (MaxEnt RL) objective, which incorporates entropy maximization to encourage exploration and enhance policy robustness. While the Gaussian policy performs well on simpler tasks, its exploration capacity and potential performance in complex multi-goal RL environments are limited by its inherent unimodality. In this paper, we employ the diffusion model, a powerful generative model capable of capturing complex multimodal distributions, as the policy representation to fulfill the MaxEnt RL objective, developing a method named MaxEnt RL with Diffusion Policy (MaxEntDP). Our method enables efficient exploration and brings the policy closer to the optimal MaxEnt policy. Experimental results on Mujoco benchmarks show that MaxEntDP outperforms the Gaussian policy and other generative models within the MaxEnt RL framework, and performs comparably to other state-of-the-art diffusion-based online RL algorithms. Our code is available at https://github.com/diffusionyes/MaxEntDP.

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Cited by 8 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. GeMPO: Generalized Measure Matching for Online Diffusion Reinforcement Learning

    cs.LG 2026-03 conditional novelty 6.5

    GeMPO unifies diffusion RL reweighting as measure matching to a regularized target, enabling flexible and negative weights that improve exploration and performance.

  2. GenPO++: Generative Policy Optimization with Jacobian-free Likelihood Ratios

    cs.LG 2026-06 unverdicted novelty 6.0

    GenPO++ achieves exact Jacobian-free likelihood ratio computation for generative flow policies by embedding history states as auxiliary memory in a high-order reversible ODE solver.

  3. Decentralized Diffusion Policy Learning for Enhanced Exploration in Cooperative Multi-agent Reinforcement Learning

    cs.MA 2026-05 unverdicted novelty 6.0

    Decentralized diffusion policies trained with importance sampling score matching enhance exploration and performance in cooperative MARL over Gaussian policy baselines.

  4. Fisher Decorator: Refining Flow Policy via a Local Transport Map

    cs.LG 2026-04 unverdicted novelty 6.0

    Fisher Decorator refines flow policies in offline RL via a local transport map and Fisher-matrix quadratic approximation of the KL constraint, yielding controllable error near the optimum and SOTA benchmark results.

  5. How Does the Lagrangian Guide Safe Reinforcement Learning through Diffusion Models?

    cs.LG 2026-02 unverdicted novelty 6.0

    ALGD augments the Lagrangian to locally convexify the energy landscape in diffusion models, stabilizing safe RL training and generation without changing optimal policies.

  6. Scaling World-Model Reinforcement Learning Through Diffusion Policy Optimization

    cs.LG 2026-05 unverdicted novelty 5.0

    MBDPO reformulates policy optimization as a diffusion process over searched trajectories in latent world models to reduce misalignment between search and value learning.

  7. Diffusion-Augmented Markov Decision Processes for Maximum Entropy Reinforcement Learning

    cs.LG 2025-12 conditional novelty 5.0

    Diffusion policies can be inserted into maximum-entropy RL by minimizing an upper bound on reverse KL, yielding DiffPPO, DiffSAC, and DiffWPO.

  8. D2 Actor Critic: Diffusion Actor Meets Distributional Critic

    cs.LG 2025-10 unverdicted novelty 5.0

    D2AC combines a diffusion actor with a distributional critic via fused distributional RL and clipped double Q-learning to reach state-of-the-art results on 18 hard control benchmarks including Humanoid, Dog, and Shadow Hand.