Joint Event Extraction via Structural Semantic Matching

Haochen Li, Tianhao Gao, Jingkun Wang, Weiping Li
6/6/2023
cs.CL

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Abstract

Event Extraction (EE) is one of the essential tasks in information extraction, which aims to detect event mentions from text and find the corresponding argument roles. The EE task can be abstracted as a process of matching the semantic definitions and argument structures of event types with the target text. This paper encodes the semantic features of event types and makes structural matching with target text. Specifically, Semantic Type Embedding (STE) and Dynamic Structure Encoder (DSE) modules are proposed. Also, the Joint Structural Semantic Matching (JSSM) model is built to jointly perform event detection and argument extraction tasks through a bidirectional attention layer. The experimental results on the ACE2005 dataset indicate that our model achieves a significant performance improvement

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Cite this paper

@article{li2023joint,
  title  = {Joint Event Extraction via Structural Semantic Matching},
  author = {Haochen Li and Tianhao Gao and Jingkun Wang and Weiping Li},
  year   = {2023},
  eprint = {2306.03469},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2306.03469v1}
}

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