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Author

Roy Schwartz

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#natural language process... Preprint Oct 2026

More Than Words: Compositional Tokenization for Efficient Language Models

Language models process and generate text sequentially in token units, and the tokenizer determines how much text each inference step covers. Under standard tokenization, a short English phrase such as"On the table."is usually produced as four separate predictions for the preposition (On), article (the), noun (table),...

Yuval Reif, Guy Kaplan, Roy Schwartz · 0 citations
#natural language process... Preprint Sep 2026

Global Divergence, Local Convergence: Representation Geometry in SSMs and Transformers

A multi-scale analysis of representations in transformers, SSMs, and hybrid architecture suggests that while transformers and SSMs induce different usage of latent space, they display a striking functional convergence at the level of local semantic manifolds.

Amit Ben-Artzy, Roy Schwartz · 0 citations

Why Fine-Tuning Encourages Hallucinations and How to Fix It

This work proposes a self-distillation-based SFT method that facilitates effective factual learning while minimizing hallucinations w.r.t.~pre-existing knowledge by regularizing output-distribution drift and investigates the mechanism, contrasting capacity limitations, behavior cloning, and localized interference.

Guy Kaplan, Zorik Gekhman, Zhen Zhu et al. · 5 citations

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