Tilde’s Submission for the WMT2026 Shared Task on Terminology Translation

Marcis Pinnis, Martins Kronis, Emils Grims, Ervins Jakovelis, Roberts Rozis, Toms Bergmanis


Abstract
This paper describes Tilde’s submissions to the WMT 2026 Shared Task on Terminology. For both subtasks, we use TildeOpen-30B, which we instruction-tune for translation using terminology glossaries and translation memories, and we detail the construction of the training data augmented with these resources. For Task 1, we compare three term recognition methods aimed at reducing large term collections to subsets relevant for translation: fuzzy search, stemming with exact-match search, and stemming with fuzzy search. For Task 2, we compare extracting a glossary from the provided translation memory and integrating it in context against using retrieved translation-memory entries directly as few-shot examples. As the shared task provides neither reference translations nor a development set, we validate our design decisions with an LLM-as-a-judge protocol. In-domain term collections reduce translation errors by up to 22% relative to translating without terminology, whereas out-of-domain collections yield only marginal gains, and glossaries extracted from the translation memory outperform few-shot translation with retrieved entries.
Anthology ID:
2026.wmt-main.121
Volume:
Proceedings of the Eleventh Conference on Machine Translation
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Barry Haddow, Tom Kocmi, Philipp Koehn, Christof Monz
Venues:
WMT | WS
SIG:
SIGMT
Publisher:
Association for Computational Linguistics
Note:
Pages:
1860–1872
Language:
URL:
https://aclanthology.org/2026.wmt-main.121/
DOI:
Bibkey:
Cite (ACL):
Marcis Pinnis, Martins Kronis, Emils Grims, Ervins Jakovelis, Roberts Rozis, and Toms Bergmanis. 2026. Tilde’s Submission for the WMT2026 Shared Task on Terminology Translation. In Proceedings of the Eleventh Conference on Machine Translation, pages 1860–1872, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
Tilde’s Submission for the WMT2026 Shared Task on Terminology Translation (Pinnis et al., WMT 2026)
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PDF:
https://aclanthology.org/2026.wmt-main.121.pdf