Author

Nicholas Popovic

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#natural language process... Preprint Oct 2026

Does Modern Standard Arabic (MSA) Dominate Arabic Dialects in LLMs? A Representation-Level Analysis

Large language models (LLMs) often default to Modern Standard Arabic (MSA) when generating Arabic, even when prompted with dialectal Arabic. A natural explanation is that their internal representations are dominated by MSA. We test this hypothesis by adapting the language-dominance framework of Shani and Basirat (2025)...

Abdu Sallouh, Nicholas Popovic, Michael Färber · 0 citations

#machine learning Preprint Jan 2026

Semantic Calibration Prevails Where Token Confidence Fails: Benchmarking Long-Form Scientific QA

This work introduces the first large-scale benchmark for UQ calibration in long-form, reasoning-demanding scientific QA, evaluating four UQ methods on 685,000 responses across up to 20 LLMs and seven datasets, supported by an extensible open-source framework whose shared-generation design enables reproducible cross-met...

Philip Müller, Nicholas Popovic, Michael Färber et al. · 4 citations · ⚡1