Minimax Testing

Sharp Local Minimax Rates for Goodness-of-Fit Testing in multivariate Binomial and Poisson families and in multinomials

Julien Chhor, Alexandra Carpentier. Mathematical Statistics and Learning, 2022.

Goodness-of-Fit Testing for Hölder-Continuous Densities: Sharp Local Minimax Rates

Julien Chhor, Alexandra Carpentier, to appear in Bernoulli, 2024.

Sparse Signal Detection in Heteroscedastic Gaussian Sequence Models: Sharp Minimax Rates
Julien Chhor, Rajarshi Mukherjee, Subhabrata Sen. Bernoulli, 2023.

Locally sharp goodness-of-fit testing in sup norm for high-dimensional counts

Subhodh Kotekal, Julien Chhor, Chao Gao, 2024.

Robustness and local differential privacy

Robust Estimation of Discrete Distributions under Local Differential Privacy

Julien Chhor and Flore Sentenac. Algorithmic Learning Theory, 2023.

Benign overfitting

Benign overfitting and adaptive nonparametric regression

Julien Chhor, Suzanne Sigalla, Alexandre B. Tsybakov, Probability Theory and Related Fields, 2024.

High-dimensional statistics

Generalized multi-view model: Adaptive density estimation under low-rank constraints

Julien Chhor, Olga Klopp, Alexandre B. Tsybakov.