Unverified50% confidenceFactExact time
DRaFT利用扩散模型去噪过程的可微性，将奖励函数梯度直接回传至模型参数，无需强化学习的策略梯度估计器，规避高方差问题
1
Sources
50%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
Directly Optimizing Face Similarity: A Practical Guide to Accelerating Character LoRA Training
redditr/StableDiffusion7/11/2026
Related Claims
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