1 code implementation • 20 Feb 2024 • Roman Pogodin, Antonin Schrab, Yazhe Li, Danica J. Sutherland, Arthur Gretton
We describe a data-efficient, kernel-based approach to statistical testing of conditional independence.
2 code implementations • 29 Oct 2023 • Ilmun Kim, Antonin Schrab
The proposed framework extends classical non-private permutation tests to private settings, maintaining both finite-sample validity and differential privacy in a rigorous manner.
1 code implementation • NeurIPS 2023 • Felix Biggs, Antonin Schrab, Arthur Gretton
We propose novel statistics which maximise the power of a two-sample test based on the Maximum Mean Discrepancy (MMD), by adapting over the set of kernels used in defining it.
no code implementations • 22 Jun 2022 • Antonin Schrab, Wittawat Jitkrittum, Zoltán Szabó, Dino Sejdinovic, Arthur Gretton
We discuss how MultiFIT, the Multiscale Fisher's Independence Test for Multivariate Dependence proposed by Gorsky and Ma (2022), compares to existing linear-time kernel tests based on the Hilbert-Schmidt independence criterion (HSIC).
4 code implementations • 18 Jun 2022 • Antonin Schrab, Ilmun Kim, Benjamin Guedj, Arthur Gretton
We derive non-asymptotic uniform separation rates for MMDAggInc and HSICAggInc, and quantify exactly the trade-off between computational efficiency and the attainable rates: this result is novel for tests based on incomplete $U$-statistics, to our knowledge.
2 code implementations • 2 Feb 2022 • Antonin Schrab, Benjamin Guedj, Arthur Gretton
KSDAgg avoids splitting the data to perform kernel selection (which leads to a loss in test power), and rather maximises the test power over a collection of kernels.
3 code implementations • NeurIPS 2023 • Antonin Schrab, Ilmun Kim, Mélisande Albert, Béatrice Laurent, Benjamin Guedj, Arthur Gretton
In practice, this parameter is unknown and, hence, the optimal MMD test with this particular kernel cannot be used.