Search Results for author: Léon Zheng

Found 5 papers, 2 papers with code

Sparsity in neural networks can improve their privacy

no code implementations20 Apr 2023 Antoine Gonon, Léon Zheng, Clément Lalanne, Quoc-Tung Le, Guillaume Lauga, Can Pouliquen

This article measures how sparsity can make neural networks more robust to membership inference attacks.

Sparsity in neural networks can increase their privacy

no code implementations11 Apr 2023 Antoine Gonon, Léon Zheng, Clément Lalanne, Quoc-Tung Le, Guillaume Lauga, Can Pouliquen

This article measures how sparsity can make neural networks more robust to membership inference attacks.

Self-supervised learning with rotation-invariant kernels

1 code implementation28 Jul 2022 Léon Zheng, Gilles Puy, Elisa Riccietti, Patrick Pérez, Rémi Gribonval

We introduce a regularization loss based on kernel mean embeddings with rotation-invariant kernels on the hypersphere (also known as dot-product kernels) for self-supervised learning of image representations.

Self-Supervised Learning

Identifiability in Two-Layer Sparse Matrix Factorization

no code implementations4 Oct 2021 Léon Zheng, Elisa Riccietti, Rémi Gribonval

In particular, in the case of fixed-support sparse matrix factorization, we give a general sufficient condition for identifiability based on rank-one matrix completability, and we derive from it a completion algorithm that can verify if this sufficient condition is satisfied, and recover the entries in the two sparse factors if this is the case.

Vocal Bursts Valence Prediction

Efficient Identification of Butterfly Sparse Matrix Factorizations

1 code implementation4 Oct 2021 Léon Zheng, Elisa Riccietti, Rémi Gribonval

Our main contribution is to prove that any $N \times N$ matrix having the so-called butterfly structure admits an essentially unique factorization into $J$ butterfly factors (where $N = 2^{J}$), and that the factors can be recovered by a hierarchical factorization method, which consists in recursively factorizing the considered matrix into two factors.

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