The Universal Dependencies (UD) project has significantly expanded linguistic coverage across 161 languages, yet Luxembourgish, a West Germanic language spoken by approximately 400,000 people, has remained absent until now. In this paper, we introduce LuxBank, the first UD Treebank for Luxembourgish, addressing the gap in syntactic annotation and analysis for this `low-research' language. We establish formal guidelines for Luxembourgish language annotation, providing the foundation for the first large-scale quantitative analysis of its syntax. LuxBank serves not only as a resource for linguists and language learners but also as a tool for developing spell checkers and grammar checkers, organising existing text archives and even training large language models. By incorporating Luxembourgish into the UD framework, we aim to enhance the understanding of syntactic variation within West Germanic languages and offer a model for documenting smaller, semi-standardised languages. This work positions Luxembourgish as a valuable resource in the broader linguistic and NLP communities, contributing to the study of languages with limited research and resources.

翻译：通用依存（UD）项目已显著扩展了161种语言的覆盖范围，然而卢森堡语——一种约有40万人使用的西日耳曼语——至今仍未被纳入。本文介绍首个卢森堡语UD树库LuxBank，填补了这一"低研究度"语言在句法标注与分析方面的空白。我们制定了卢森堡语标注的正式规范，为首次大规模量化分析其句法结构奠定了基础。LuxBank不仅是语言学家和语言学习者的资源，还可作为开发拼写检查器与语法检查器、组织现有文本档案乃至训练大语言模型的工具。通过将卢森堡语纳入UD框架，我们旨在深化对西日耳曼语言内部句法变异的理解，并为记录规模较小、半标准化的语言提供范式。这项工作使卢森堡语成为更广泛的语言学与自然语言处理领域的宝贵资源，为研究资源和研究有限的语言作出贡献。