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Ulrich Aivodji

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#artificial intelligence Preprint Sep 2026

Quantization Enables Private Dense Retrieval against Malicious Service Providers

The results suggest that private dense retrieval is already practical for moderately sized, privacy-sensitive corpora when minute-scale latency is acceptable, and formulates a two-round cryptographic protocol that provides both guarantees.

Louis Tremblay Thibault, Sofiane Azogagh, Marc-Olivier Killijian et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Neuralyzing the Trace: Selective Representation-Level Unlearning with Contrastive Sparse Autoencoders

This work introduces SCALPEL, a contrastive sparse autoencoder designed to learn more selective forget features and shows theoretically that contrastive training promotes target-selective features and that the selection score controls expected background knowledge perturbation.

Itai Zehavi, Fanny Jourdan, Ulrich Aivodji · 0 citations

Discovering Latent Groups for Robust Classification

The experiments show that the learned tree topology provides strong interpretability by consistently isolating minority subgroups, which provides a transparent mapping between the model architecture and the data's latent group structure, while yielding competitive robustness with state-of-the-art methods.

Ankur Garg, Ulrich Aivodji, S. Kahou et al. · 0 citations

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