Contextual Probing for Low-Resource Named Entity Recognition in Latin

Maria Mihaela Trusca, Mark Depauw, Violet Soen, Ine de Daele, Kevin Verbruggen, Tim Van de Cruys


Abstract
Named Entity Recognition (NER) for low-resource languages remains challenging due to limited annotated data and linguistic characteristics such as rich morphology and flexible word order. In this work, we propose a probing-based method that leverages the contextual knowledge encoded in pretrained language models to detect entities. Our approach uses a substitution strategy in which words in a sentence are replaced, one by one, with candidate entities of predefined entity types, referred to as probes. By measuring how well the probes of a certain entity type fit the surrounding context of the replaced word, we estimate the compatibility between the replaced word and the entity type. The resulting compatibility scores can be used either as a standalone zero-shot NER model or as an auxiliary feature during NER model decoding. We evaluate our method on the Latin dataset provided in the Fourth Workshop on Language Technologies for Historical and Ancient Languages (LT4HALA). Our system ranked second in the coarse-grained NER task. For the fine-grained NER task, where no training data were available, we relied exclusively on the proposed scoring method without any model training and achieved third place. These results demonstrate that contextual probing can provide an effective signal for NER in low-resource settings.
Anthology ID:
2026.lt4hala-1.45
Volume:
Proceedings of the Fourth Workshop on Language Technologies for Historical and Ancient Languages (LT4HALA 2026) @ LREC 2026
Month:
May
Year:
2026
Address:
Palma, Mallorca (Spain)
Editors:
Rachele Sprugnoli, Marco Passarotti
Venues:
LT4HALA | WS
SIG:
Publisher:
ELRA Language Resources Association (ELRA)
Note:
Pages:
437–442
Language:
External URL:
https://lrec.elra.info/lrec2026-ws-lt4hala-45
DOI:
10.63317/4xfc9y3we5j9
Bibkey:
Cite (ACL):
Maria Mihaela Trusca, Mark Depauw, Violet Soen, Ine de Daele, Kevin Verbruggen, and Tim Van de Cruys. 2026. Contextual Probing for Low-Resource Named Entity Recognition in Latin. In Proceedings of the Fourth Workshop on Language Technologies for Historical and Ancient Languages (LT4HALA 2026) @ LREC 2026, pages 437–442, Palma, Mallorca (Spain). ELRA Language Resources Association (ELRA).
Cite (Informal):
Contextual Probing for Low-Resource Named Entity Recognition in Latin (Trusca et al., LT4HALA 2026)
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