速度调度流匹配 / Velocity Scheduled Flow Matching
1️⃣ 一句话总结
这篇论文提出一种名为速度调度流匹配的方法,通过给生成过程中的速度添加可调节的调度函数,在不增加计算成本的情况下显著提升生成质量,尤其在采样步数有限时效果更佳。
Flow matching trains a neural network to regress the conditional velocity along a linear interpolant between noise and data, and the number of network evaluations~(NFE) sets the cost of sampling. The straight-line interpolant carries an implicit choice: the sample moves at constant speed throughout the trajectory. We relax this choice and introduce Velocity Scheduled Flow Matching~(VSFM), which replaces the conditional target $x_1 - x_0$ with $v(t)(x_1 - x_0)$ for any nonnegative profile $v:[0,1]\to\mathbb{R}_{\geq 0}$ satisfying $\int_0^1 v\,dt = 1$. We study six polynomial profiles drawn from motion planning. The first use of VSFM is at inference time: a pretrained linear flow-matching model can be sampled under any admissible profile by integrating its ODE on a non-uniform $\tau$-schedule, with no retraining and no additional computation; on CIFAR-10 this lowers FID by up to $19.8\%$. Training from scratch under a braking profile gives a further reduction of $17.4\%$ at $4$~NFE. Both gains follow from the local truncation error of the Euler integrator on the induced grid.
速度调度流匹配 / Velocity Scheduled Flow Matching
这篇论文提出一种名为速度调度流匹配的方法,通过给生成过程中的速度添加可调节的调度函数,在不增加计算成本的情况下显著提升生成质量,尤其在采样步数有限时效果更佳。
源自 arXiv: 2607.11442