arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.11095math.STstat.MEstat.MLstat.TH
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函数型数据的核双样本检验

A Kernel Two-Sample Test for Functional Data

George Wynne, Andrew B. Duncan

摘要:

我们提出了一种基于最大均值离散(MMD)的非参数双样本检验方法,用于检验两个函数样本具有相同的潜在分布的假设,使用定义在函数空间上的核。这种结构的动机是基于MMD的测试的效率不断增加的维度的数据集的缩放分析。函数空间及其相关的MMD内核的理论属性的建立和使用,以确定新提出的测试的有效性,以及评估使用功能重建的基础上离散函数样本的影响。在一系列的合成和现实世界的数据集的理论结果证明。

英文摘要:

We propose a nonparametric two-sample test procedure based on Maximum Mean Discrepancy (MMD) for testing the hypothesis that two samples of functions have the same underlying distribution, using kernels defined on function spaces. This construction is motivated by a scaling analysis of the efficiency of MMD-based tests for datasets of increasing dimension. Theoretical properties of kernels on function spaces and their associated MMD are established and employed to ascertain the efficacy of the newly proposed test, as well as to assess the effects of using functional reconstructions based on discretised function samples. The theoretical results are demonstrated over a range of synthetic and real world datasets.

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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