A zero-cost curvature proxy predicts Euler step error for flow matching, but per-sample step control adds nothing over a static grid (Anima, 12 units; related to CAT-Flow) [R]
Question. A multistep sampler has consecutive velocity evaluations for free. Is the angle between them a usable curvature signal for adaptive stepping, and does using it online beat a fixed grid? Setup. Anima (flow model
![A zero-cost curvature proxy predicts Euler step error for flow matching, but per-sample step control adds nothing over a static grid (Anima, 12 units; related to CAT-Flow) [R]](https://preview.redd.it/9q69esd1511i1.jpeg?width=640&crop=smart&auto=webp&s=eab8f10e63afed1aad1168581c4d4ceb9d45cd00)
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