Linguistic Generalizations are not Rules: Impacts on Evaluation of LMs

Leonie Weissweiler, Kyle Mahowald, Adele E. Goldberg


Abstract
Linguistic evaluations of how well LMs generalize to produce or understand novel text often implicitly take for granted that natural languages are generated by symbolic rules. Grammaticality is thought to be determined by whether sentences obey such rules. Interpretation is believed to be compositionally generated by syntactic rules operating on meaningful words. Semantic parsing is intended to map sentences into formal logic. Failures of LMs to obey strict rules have been taken to reveal that LMs do not produce or understand language like humans. Here we suggest that LMs’ failures to obey symbolic rules may be a feature rather than a bug, because natural languages are not based on rules. New utterances are produced and understood by a combination of flexible, interrelated, and context-dependent constructions. We encourage researchers to reimagine appropriate benchmarks and analyses that acknowledge the rich, flexible generalizations that comprise natural languages.
Anthology ID:
2025.cxgsnlp-1.7
Volume:
Proceedings of the Second International Workshop on Construction Grammars and NLP
Month:
September
Year:
2025
Address:
Düsseldorf, Germany
Editors:
Claire Bonial, Melissa Torgbi, Leonie Weissweiler, Austin Blodgett, Katrien Beuls, Paul Van Eecke, Harish Tayyar Madabushi
Venues:
CxGsNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
61–74
Language:
URL:
https://preview.aclanthology.org/iwcs-25-ingestion/2025.cxgsnlp-1.7/
DOI:
Bibkey:
Cite (ACL):
Leonie Weissweiler, Kyle Mahowald, and Adele E. Goldberg. 2025. Linguistic Generalizations are not Rules: Impacts on Evaluation of LMs. In Proceedings of the Second International Workshop on Construction Grammars and NLP, pages 61–74, Düsseldorf, Germany. Association for Computational Linguistics.
Cite (Informal):
Linguistic Generalizations are not Rules: Impacts on Evaluation of LMs (Weissweiler et al., CxGsNLP 2025)
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PDF:
https://preview.aclanthology.org/iwcs-25-ingestion/2025.cxgsnlp-1.7.pdf