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Bibliographic Details
Main Authors: Glaser, Pierre, Widmann, David, Lindsten, Fredrik, Gretton, Arthur
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2510.14711
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Table of Contents:
  • We introduce the Kernel Calibration Conditional Stein Discrepancy test (KCCSD test), a non-parametric, kernel-based test for assessing the calibration of probabilistic models with well-defined scores. In contrast to previous methods, our test avoids the need for possibly expensive expectation approximations while providing control over its type-I error. We achieve these improvements by using a new family of kernels for score-based probabilities that can be estimated without probability density samples, and by using a conditional goodness-of-fit criterion for the KCCSD test's U-statistic. We demonstrate the properties of our test on various synthetic settings.