From Discourse to Narrative: Knowledge Projection for Event Relation Extraction

Jialong Tang, Hongyu Lin, Meng Liao, Yaojie Lu, Xianpei Han, Le Sun, Weijian Xie, Jin Xu


Abstract
Current event-centric knowledge graphs highly rely on explicit connectives to mine relations between events. Unfortunately, due to the sparsity of connectives, these methods severely undermine the coverage of EventKGs. The lack of high-quality labelled corpora further exacerbates that problem. In this paper, we propose a knowledge projection paradigm for event relation extraction: projecting discourse knowledge to narratives by exploiting the commonalities between them. Specifically, we propose Multi-tier Knowledge Projection Network (MKPNet), which can leverage multi-tier discourse knowledge effectively for event relation extraction. In this way, the labelled data requirement is significantly reduced, and implicit event relations can be effectively extracted. Intrinsic experimental results show that MKPNet achieves the new state-of-the-art performance and extrinsic experimental results verify the value of the extracted event relations.
Anthology ID:
2021.acl-long.60
Volume:
Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)
Month:
August
Year:
2021
Address:
Online
Venues:
ACL | IJCNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
732–742
Language:
URL:
https://aclanthology.org/2021.acl-long.60
DOI:
10.18653/v1/2021.acl-long.60
Bibkey:
Cite (ACL):
Jialong Tang, Hongyu Lin, Meng Liao, Yaojie Lu, Xianpei Han, Le Sun, Weijian Xie, and Jin Xu. 2021. From Discourse to Narrative: Knowledge Projection for Event Relation Extraction. In Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers), pages 732–742, Online. Association for Computational Linguistics.
Cite (Informal):
From Discourse to Narrative: Knowledge Projection for Event Relation Extraction (Tang et al., ACL-IJCNLP 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.acl-long.60.pdf
Video:
 https://aclanthology.org/2021.acl-long.60.mp4
Code
 TangJiaLong/Knowledge-Projection-for-ERE
Data
FrameNetWSC