Benchmarking Argument Identification and Ellipsis Recovery in Chinese Comparative Constructions

Wenjing Xu, Hongzhi Xu


Abstract
Ellipsis in comparative constructions provides a challenging test of semantic interpretation because comprehenders must reconstruct implicit constituents that are not overtly expressed. This study investigates whether large language models (LLMs) can capture the structured semantic inferences required for understanding Chinese comparative constructions. We introduce a linguistically motivated evaluation framework targeting two essential components of comparative interpretation: (i) identification of comparative arguments and (ii) recovery of elliptical constituents. Based on 2,076 naturally occurring Chinese bi-comparative sentences, we construct an annotated resource with comparative argument boundaries, recovered elliptical constituents, and five comparison dimensions representing distinct semantic bases of comparison. We evaluate several representative LLMs, including DeepSeek-V3.1, GPT-4o, and Gemini-2.0-Flash. While all models reliably identify overt comparative arguments, they exhibit substantial degradation when reconstructing implicit constituents. These results suggest that current LLMs can capture surface-level structural regularities but still face challenges in recovering implicit semantic representations required for human-like interpretation. Our resource provides a controlled linguistic testbed for studying the relationship between linguistic structure, semantic inference, and computational models of language understanding.
Anthology ID:
2026.findings-emnlp.1489
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
31694–31707
Language:
URL:
https://aclanthology.org/2026.findings-emnlp.1489/
DOI:
10.18653/2026.findings-emnlp.1489
Bibkey:
Cite (ACL):
Wenjing Xu and Hongzhi Xu. 2026. Benchmarking Argument Identification and Ellipsis Recovery in Chinese Comparative Constructions. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 31694–31707, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
Benchmarking Argument Identification and Ellipsis Recovery in Chinese Comparative Constructions (Xu & Xu, Findings 2026)
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PDF:
https://aclanthology.org/2026.findings-emnlp.1489.pdf