NTRK is a reward-guided diffusion sampler that uses a whitening operator to bias the noise term toward high-reward outcomes, outperforming baselines with up to 20x fewer sampling steps on aesthetic tasks.
Training-free stylized text-to- image generation with fast inference.arXiv preprint arXiv:2505.19063, 2025
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NoiseTilt: Noise-Tilted Reverse Kernels for Diffusion Reward Alignment
NTRK is a reward-guided diffusion sampler that uses a whitening operator to bias the noise term toward high-reward outcomes, outperforming baselines with up to 20x fewer sampling steps on aesthetic tasks.