On the Collapse of Generative Paths: A Criterion and Correction for Diffusion Steering 事件

On the Collapse of Generative Paths: A Criterion and Correction for Diffusion Steering arXiv:2512.10339v2 Announce Type: replace Abstract: Inference-time steering adapts pretrained diffusion and flow models to new tasks without retraining, often utilizing ratio-of-densities constructions that reweight time-indexed marginals with fixed exponents. We identify Marginal Path Collapse, a failure mode in which the intermediate density defined by such compositions becomes non-normalizable despite vali