Understanding or Memorizing? A Case Study of German Definite Articles in Language Models

Fuente: arXiv
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Autores principales: Drechsel, Jonathan, Bytyqi, Erisa, Herbold, Steffen
Formato: Preprint
Publicado: 2026
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author Drechsel, Jonathan
Bytyqi, Erisa
Herbold, Steffen
author_facet Drechsel, Jonathan
Bytyqi, Erisa
Herbold, Steffen
contents Language models perform well on grammatical agreement, but it is unclear whether this reflects rule-based generalization or memorization. We study this question for German definite singular articles, whose forms depend on gender and case. Using GRADIEND, a gradient-based interpretability method, we learn parameter update directions for gender-case specific article transitions. We find that updates learned for a specific gender-case article transition frequently affect unrelated gender-case settings, with substantial overlap among the most affected neurons across settings. These results argue against a strictly rule-based encoding of German definite articles, indicating that models at least partly rely on memorized associations rather than abstract grammatical rules.
format Preprint
id arxiv_https___arxiv_org_abs_2601_09313
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Understanding or Memorizing? A Case Study of German Definite Articles in Language Models
Drechsel, Jonathan
Bytyqi, Erisa
Herbold, Steffen
Computation and Language
Artificial Intelligence
Language models perform well on grammatical agreement, but it is unclear whether this reflects rule-based generalization or memorization. We study this question for German definite singular articles, whose forms depend on gender and case. Using GRADIEND, a gradient-based interpretability method, we learn parameter update directions for gender-case specific article transitions. We find that updates learned for a specific gender-case article transition frequently affect unrelated gender-case settings, with substantial overlap among the most affected neurons across settings. These results argue against a strictly rule-based encoding of German definite articles, indicating that models at least partly rely on memorized associations rather than abstract grammatical rules.
title Understanding or Memorizing? A Case Study of German Definite Articles in Language Models
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2601.09313