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arXiv 1703.09754math.OCmath.APmath.DG
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基于Wasserstein正则化的正则重心

A canonical barycenter via Wasserstein regularization

Young-Heon Kim, Brendan Pass

摘要:

在度量测度空间$(X, d, {\bf m})$上引入概率测度$μ$的重心的弱概念,度量$d$和参考测度${\bf m}$ .在最优输运计划由映射给出的假设下,证明了我们的重心$B(μ)$是定义良好的,它是$X$上的概率测度,它支持给定测度$μ$的通常度量重心点集.该定义使用度量空间$X$到其Wasserstein空间$P(X)$的规范嵌入,将给定的度量$μ$向前推到$P(X)$上的度量。然后利用Wasserstein距离将该测度正则化到参考测度${\bf m}$,得到了一个唯一定义的测度,该测度是在$X$的重心点上支撑的.我们研究了$B(μ)$的各种性质

英文摘要:

We introduce a weak notion of barycenter of a probability measure $μ$ on a metric measure space $(X, d, {\bf m})$, with the metric $d$ and reference measure ${\bf m}$. Under the assumption that optimal transport plans are given by mappings, we prove that our barycenter $B(μ)$ is well defined; it is a probability measure on $X$ supported on the set of the usual metric barycenter points of the given measure $μ$. The definition uses the canonical embedding of the metric space $X$ into its Wasserstein space $P(X)$, pushing a given measure $μ$ forward to a measure on $P(X)$. We then regularize the measure by the Wasserstein distance to the reference measure ${\bf m}$, and obtain a uniquely defined measure on $X$ supported on the barycentric points of $μ$. We investigate various properties of $B(μ)$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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