Abstract
Broad-coverage meaning representations in NLP mostly focus on explicitly expressed content. More importantly, the scarcity of datasets annotating diverse implicit roles limits empirical studies into their linguistic nuances. For example, in the web review “Great service!”, the provider and consumer are implicit arguments of different types. We examine an annotated corpus of fine-grained implicit arguments (Cui and Hershcovich, 2020) by carefully re-annotating it, resolving several inconsistencies. Subsequently, we present the first transition-based neural parser that can handle implicit arguments dynamically, and experiment with two different transition systems on the improved dataset. We find that certain types of implicit arguments are more difficult to parse than others and that the simpler system is more accurate in recovering implicit arguments, despite having a lower overall parsing score, attesting current reasoning limitations of NLP models. This work will facilitate a better understanding of implicit and underspecified language, by incorporating it holistically into meaning representations.- Anthology ID:
- 2021.iwpt-1.7
- Volume:
- Proceedings of the 17th International Conference on Parsing Technologies and the IWPT 2021 Shared Task on Parsing into Enhanced Universal Dependencies (IWPT 2021)
- Month:
- August
- Year:
- 2021
- Address:
- Online
- Editors:
- Stephan Oepen, Kenji Sagae, Reut Tsarfaty, Gosse Bouma, Djamé Seddah, Daniel Zeman
- Venue:
- IWPT
- SIG:
- SIGPARSE
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 65–77
- Language:
- URL:
- https://aclanthology.org/2021.iwpt-1.7
- DOI:
- 10.18653/v1/2021.iwpt-1.7
- Cite (ACL):
- Ruixiang Cui and Daniel Hershcovich. 2021. Great Service! Fine-grained Parsing of Implicit Arguments. In Proceedings of the 17th International Conference on Parsing Technologies and the IWPT 2021 Shared Task on Parsing into Enhanced Universal Dependencies (IWPT 2021), pages 65–77, Online. Association for Computational Linguistics.
- Cite (Informal):
- Great Service! Fine-grained Parsing of Implicit Arguments (Cui & Hershcovich, IWPT 2021)
- PDF:
- https://preview.aclanthology.org/ingest-acl-2023-videos/2021.iwpt-1.7.pdf
- Code
- ruixiangcui/implicit_parser