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Researchers Introduce MARBLE for Multi-Reward Balancing in Diffusion RL

Amy Reed · 9 May 2026

Researchers introduced MARBLE to balance multiple rewards in diffusion RL. MARBLE optimizes image criteria to align diffusion models with human preferences.

Researchers released MARBLE, a method for balancing multiple reward aspects in reinforcement learning for diffusion models. It addresses multi-dimensional image evaluation by jointly optimizing criteria such as aesthetics, alignment, and diversity. This fixes issues in existing scalarized reward approaches that cause…

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