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Spectral Regularized Kernel Two-Sample Tests
May 3, 2024, 4:54 a.m. | Omar Hagrass, Bharath K. Sriperumbudur, Bing Li
cs.LG updates on arXiv.org arxiv.org
Abstract: Over the last decade, an approach that has gained a lot of popularity to tackle nonparametric testing problems on general (i.e., non-Euclidean) domains is based on the notion of reproducing kernel Hilbert space (RKHS) embedding of probability distributions. The main goal of our work is to understand the optimality of two-sample tests constructed based on this approach. First, we show the popular MMD (maximum mean discrepancy) two-sample test to be not optimal in terms of …
abstract arxiv cs.lg domains embedding general kernel math.st non-euclidean notion probability sample space stat.ml stat.th testing tests type work
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