A Practical Introduction to Kernel Discrepancies: MMD, HSIC & KSD
NeutralArtificial Intelligence
This article serves as a practical introduction to kernel discrepancies, specifically focusing on Maximum Mean Discrepancy (MMD), Hilbert-Schmidt Independence Criterion (HSIC), and Kernel Stein Discrepancy (KSD). It discusses various estimators, including V-statistics and U-statistics, along with more efficient incomplete U-statistics. Understanding these concepts is crucial for researchers and practitioners in statistics and machine learning, as they provide essential tools for measuring differences between probability distributions.
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