Author

Hicham Randrianarivo

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#natural language process... Preprint Oct 2026

A Systematic Study of Semantic ID Spaces for Generative Information Retrieval

Generative Information Retrieval (GIR) has emerged as a transformative paradigm, shifting document retrieval from a traditional"retrieve-and-rank"workflow to sequence-to-sequence generation, where a model directly predicts document identifiers (DocIDs). While the semantic design of these DocIDs is known to be critical...

Alexia Allal, Hicham Randrianarivo, Sylvain Lamprier · 0 citations

Preprint Sep 2026

REDSI: Addressing the Reproducibility and Evaluation Consistency of Differentiable Search Indexing for Document Retrieval

ReDSI is introduced, the first open-source DSI implementation supporting all three original document identifier types, together with a parameterizable and well-documented NQ320K construction pipeline, and conducts extensive experiments under model downscaling, covering retrieval effectiveness, parameter efficiency, tra...

Vivien Nicolas, Hicham Randrianarivo, P. Sébillot et al. · 0 citations