A Novel Global Feature-Oriented Relational Triple Extraction Model based on Table Filling

Feiliang Ren, Longhui Zhang, Shujuan Yin, Xiaofeng Zhao, Shilei Liu, Bochao Li, Yaduo Liu


Abstract
Table filling based relational triple extraction methods are attracting growing research interests due to their promising performance and their abilities on extracting triples from complex sentences. However, this kind of methods are far from their full potential because most of them only focus on using local features but ignore the global associations of relations and of token pairs, which increases the possibility of overlooking some important information during triple extraction. To overcome this deficiency, we propose a global feature-oriented triple extraction model that makes full use of the mentioned two kinds of global associations. Specifically, we first generate a table feature for each relation. Then two kinds of global associations are mined from the generated table features. Next, the mined global associations are integrated into the table feature of each relation. This “generate-mine-integrate” process is performed multiple times so that the table feature of each relation is refined step by step. Finally, each relation’s table is filled based on its refined table feature, and all triples linked to this relation are extracted based on its filled table. We evaluate the proposed model on three benchmark datasets. Experimental results show our model is effective and it achieves state-of-the-art results on all of these datasets. The source code of our work is available at: https://github.com/neukg/GRTE.
Anthology ID:
2021.emnlp-main.208
Volume:
Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2021
Address:
Online and Punta Cana, Dominican Republic
Editors:
Marie-Francine Moens, Xuanjing Huang, Lucia Specia, Scott Wen-tau Yih
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2646–2656
Language:
URL:
https://aclanthology.org/2021.emnlp-main.208
DOI:
10.18653/v1/2021.emnlp-main.208
Bibkey:
Cite (ACL):
Feiliang Ren, Longhui Zhang, Shujuan Yin, Xiaofeng Zhao, Shilei Liu, Bochao Li, and Yaduo Liu. 2021. A Novel Global Feature-Oriented Relational Triple Extraction Model based on Table Filling. In Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, pages 2646–2656, Online and Punta Cana, Dominican Republic. Association for Computational Linguistics.
Cite (Informal):
A Novel Global Feature-Oriented Relational Triple Extraction Model based on Table Filling (Ren et al., EMNLP 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.emnlp-main.208.pdf
Video:
 https://aclanthology.org/2021.emnlp-main.208.mp4
Code
 neukg/GRTE
Data
WebNLG