Agent-Specific Deontic Modality Detection in Legal Language

Abhilasha Sancheti, Aparna Garimella, Balaji Vasan Srinivasan, Rachel Rudinger


Abstract
Legal documents are typically long and written in legalese, which makes it particularly difficult for laypeople to understand their rights and duties. While natural language understanding technologies can be valuable in supporting such understanding in the legal domain, the limited availability of datasets annotated for deontic modalities in the legal domain, due to the cost of hiring experts and privacy issues, is a bottleneck. To this end, we introduce, LEXDEMOD, a corpus of English contracts annotatedwith deontic modality expressed with respect to a contracting party or agent along with the modal triggers. We benchmark this dataset on two tasks: (i) agent-specific multi-label deontic modality classification, and (ii) agent-specific deontic modality and trigger span detection using Transformer-based (Vaswani et al., 2017) language models. Transfer learning experiments show that the linguistic diversity of modal expressions in LEXDEMOD generalizes reasonably from lease to employment andrental agreements. A small case study indicates that a model trained on LEXDEMOD can detect red flags with high recall. We believe our work offers a new research direction for deontic modality detection in the legal domain.
Anthology ID:
2022.emnlp-main.795
Volume:
Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates
Editors:
Yoav Goldberg, Zornitsa Kozareva, Yue Zhang
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
11563–11579
Language:
URL:
https://aclanthology.org/2022.emnlp-main.795
DOI:
10.18653/v1/2022.emnlp-main.795
Bibkey:
Cite (ACL):
Abhilasha Sancheti, Aparna Garimella, Balaji Vasan Srinivasan, and Rachel Rudinger. 2022. Agent-Specific Deontic Modality Detection in Legal Language. In Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing, pages 11563–11579, Abu Dhabi, United Arab Emirates. Association for Computational Linguistics.
Cite (Informal):
Agent-Specific Deontic Modality Detection in Legal Language (Sancheti et al., EMNLP 2022)
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PDF:
https://aclanthology.org/2022.emnlp-main.795.pdf