Distance and Projectivity as Predictors of Sentence Acceptability in Free Word Order Languages

Kirill Chuprinko, Artem Novozhilov, Arthur Stepanov


Abstract
This study investigates how two core metrics rooted in Dependency Grammar, Minimal Dependency Distance (MDD) and projectivity, predict sentence acceptability in Russian and Serbo-Croatian. Using exhaustive word order permutations in controlled five-word sentences, we model how these metrics relate to acceptability judgments in two psycholinguistic experiments. While MDD has been widely studied as a processing constraint, projectivity violations have received less attention in acceptability modeling. We show that both significantly affect judgments, with projectivity playing a surprisingly strong role. In addition, Serbo-Croatian’s rigid clitic placement provides a natural test case for disentangling grammatical from processing constraints. Our findings offer a computationally precise, dependency-based model of acceptability that advances cognitively grounded language modeling for free word order languages.
Anthology ID:
2025.depling-1.11
Volume:
Proceedings of the Eighth International Conference on Dependency Linguistics (Depling, SyntaxFest 2025)
Month:
August
Year:
2025
Address:
Ljubljana, Slovenia
Editors:
Eva Hajičová, Sylvain Kahane
Venues:
DepLing | WS | SyntaxFest
SIG:
SIGPARSE
Publisher:
Association for Computational Linguistics
Note:
Pages:
108–119
Language:
URL:
https://preview.aclanthology.org/mtsummit-25-ingestion/2025.depling-1.11/
DOI:
Bibkey:
Cite (ACL):
Kirill Chuprinko, Artem Novozhilov, and Arthur Stepanov. 2025. Distance and Projectivity as Predictors of Sentence Acceptability in Free Word Order Languages. In Proceedings of the Eighth International Conference on Dependency Linguistics (Depling, SyntaxFest 2025), pages 108–119, Ljubljana, Slovenia. Association for Computational Linguistics.
Cite (Informal):
Distance and Projectivity as Predictors of Sentence Acceptability in Free Word Order Languages (Chuprinko et al., DepLing-SyntaxFest 2025)
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PDF:
https://preview.aclanthology.org/mtsummit-25-ingestion/2025.depling-1.11.pdf