Transformers Learning Contrafactives: The Importance of Data Distributions

David Strohmaier, Simon Wimmer


Abstract
No natural language is known to have contrafactive attitude verbs, yet factives are common across natural languages. Several experiments by Strohmaier and Wimmer (2022; 2023; 2025) use transformers as model learners to investigate whether this asymmetry is due to a difference in how easy it is to learn contrafactives and factives. But they do not explore empirically-founded data distributions. We fill this gap, further improving the overall quality of training data distributions using linear programming.Our results confirm Strohmaier and Wimmer’s 2025 conclusion that there is no learnability difference in production, while establishing the impact of differences in data distributions.
Anthology ID:
2026.brigap-1.10
Volume:
Proceedings of the Third Workshop on the Bridges and Gaps between Formal and Computational Linguistics (BriGap-3)
Month:
July
Year:
2026
Address:
Paris, France
Editors:
Timothée Bernard, Emmanuele Chersoni, Giulia Rambelli
Venues:
BriGap | WS
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Publisher:
Association for Computational Linguistics
Note:
Pages:
94–120
Language:
URL:
https://preview.aclanthology.org/ingest-brigap/2026.brigap-1.10/
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Cite (ACL):
David Strohmaier and Simon Wimmer. 2026. Transformers Learning Contrafactives: The Importance of Data Distributions. In Proceedings of the Third Workshop on the Bridges and Gaps between Formal and Computational Linguistics (BriGap-3), pages 94–120, Paris, France. Association for Computational Linguistics.
Cite (Informal):
Transformers Learning Contrafactives: The Importance of Data Distributions (Strohmaier & Wimmer, BriGap 2026)
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PDF:
https://preview.aclanthology.org/ingest-brigap/2026.brigap-1.10.pdf