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Minimax Optimal Goodness-of-Fit Testing with Kernel Stein Discrepancy
April 15, 2024, 4:44 a.m. | Omar Hagrass, Bharath Sriperumbudur, Krishnakumar Balasubramanian
stat.ML updates on arXiv.org arxiv.org
Abstract: We explore the minimax optimality of goodness-of-fit tests on general domains using the kernelized Stein discrepancy (KSD). The KSD framework offers a flexible approach for goodness-of-fit testing, avoiding strong distributional assumptions, accommodating diverse data structures beyond Euclidean spaces, and relying only on partial knowledge of the reference distribution, while maintaining computational efficiency. We establish a general framework and an operator-theoretic representation of the KSD, encompassing many existing KSD tests in the literature, which vary depending …
abstract arxiv assumptions beyond data diverse domains explore framework general kernel knowledge math.st minimax reference spaces stat.ml stat.th testing tests type
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