Search Results for author: Antonin Schrab

Found 7 papers, 6 papers with code

Practical Kernel Tests of Conditional Independence

1 code implementation20 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.

Differentially Private Permutation Tests: Applications to Kernel Methods

2 code implementations29 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.

MMD-FUSE: Learning and Combining Kernels for Two-Sample Testing Without Data Splitting

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.

Two-sample testing

Discussion of `Multiscale Fisher's Independence Test for Multivariate Dependence'

no code implementations22 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).

Efficient Aggregated Kernel Tests using Incomplete $U$-statistics

4 code implementations18 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.

Computational Efficiency

KSD Aggregated Goodness-of-fit Test

2 code implementations2 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.

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