When More Metadata Misleads: Probing Field-Level Grounding in LLM-Generated Museum Descriptions

Clemencia Siro, Laura Hollink · 2026 · arXiv

DOI: 10.48550/arXiv.2610.31193 · open-access PDF

Abstract

Metadata-conditioned generation is often framed as a data-to-text task in which additional input fields should improve grounding. Museum description generation challenges this assumption because catalogue records are heterogeneous, partially visual, and unevenly documented across geographic regions. We study how metadata composition shapes the generation of artefact descriptions through a two-phase framework. Phase 1 analyses natural metadata variation in a large museum collection, where field count, field type, image availability, and Place co-vary. Phase 2 introduces controlled field probes

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