I’m a first-year PhD candidate in the Schwartslab of Huji-NLP at the Hebrew University. I’m currently on a full-year research visit at DILL Lab with Swabha Swayamdipta.
I'm broadly interested in how language models form and organize meaning internally. My research revolves around the inner lexicon: the emergent word-level representations LLMs build from sub-word fragments, and how understanding this hidden structure can make models more faithful, efficient, and interpretable.
When I’m not delving into cutting-edge NLP challenges, I’m a passionate Tel Aviv fan, a devoted cat parent, a sea lover, and arguably the most enthusiastic reader around.
News
Publications
Preprints
SFT-Induced Hallucinations as a Continual Learning Problem
Guy Kaplan, Zorik Gekhman, Zhen Zhu, Yuval Reif, Lotem Rozner, Swabha Swayamdipta, Derek Hoiem, Roy Schwartz
Submitted to CoLM 2026
More Than Words: Compositional Tokenization for Efficient Language Models
Yuval Reif, Guy Kaplan, Roy Schwartz
Submitted to CoLM 2026
Education
The Hebrew University of Jerusalem
PhD Student, Computer Science
Advisor: Prof. Roy Schwartz
The Hebrew University of Jerusalem
M.Sc., Computer Science
Advisor: Prof. Roy Schwartz
The Open University of Israel
B.Sc., Computer Science
Tel Aviv University
B.A., Economics
University of Haifa
B.A., General Studies, Magna Cum Laude