collaborators

7 papers

cs.CL2026

Robust Language Identification for Romansh Varieties

Charlotte Model, Sina Ahmadi, Jannis Vamvas

The Romansh language has several regional varieties, called idioms, which sometimes have limited mutual intelligibility. Despite this linguistic diversity, there has been a lack of…

cs.CL2026

SwissGov-RSD: A Human-annotated, Cross-lingual Benchmark for Token-level Recognition of Semantic Differences Between Related Documents

Michelle Wastl, Jannis Vamvas, Rico Sennrich

Recognizing semantic differences across documents is crucial for text generation evaluation and content alignment, especially in cross-lingual settings. However, as a standalone ta…

cs.CL2026

RUMLEM: A Dictionary-Based Lemmatizer for Romansh

Dominic P. Fischer, Zachary Hopton, Jannis Vamvas

Lemmatization -- the task of mapping an inflected word form to its dictionary form -- is a crucial component of many NLP applications. In this paper, we present RUMLEM, a lemmatize…

cs.CL2026

The Mediomatix Corpus: Parallel Data for Romansh Language Varieties via Comparable Schoolbooks

Zachary Hopton, Jannis Vamvas, Andrin Büchler +3

The five idioms (i.e., varieties) of the Romansh language are largely standardized and are taught in the schools of the respective communities in Switzerland. In this paper, we pre…

cs.CL2025

QueST: Incentivizing LLMs to Generate Difficult Problems

Hanxu Hu, Xingxing Zhang, Jannis Vamvas +2

Large Language Models have achieved strong performance on reasoning tasks, solving competition-level coding and math problems. However, their scalability is limited by human-labele…

cs.CL2025

20min-XD: A Comparable Corpus of Swiss News Articles

Michelle Wastl, Jannis Vamvas, Selena Calleri +1

We present 20min-XD (20 Minuten cross-lingual document-level), a French-German, document-level comparable corpus of news articles, sourced from the Swiss online news outlet 20 Minu…