Multi-view Inference for Relation Extraction with Uncertain Knowledge

Authors

  • Bo Li Peking University
  • Wei Ye Peking University
  • Canming Huang Beijing University of Posts and Telecommunications
  • Shikun Zhang Peking University

Keywords:

Information Extraction

Abstract

Knowledge graphs (KGs) are widely used to facilitate relation extraction (RE) tasks. While most previous RE methods focus on leveraging deterministic KGs, uncertain KGs, which assign a confidence score for each relation instance, can provide prior probability distributions of relational facts as valuable external knowledge for RE models. This paper proposes to exploit uncertain knowledge to improve relation extraction. Specifically, we introduce ProBase, an uncertain KG that indicates to what extent a target entity belongs to a concept, into our RE architecture. We then design a novel multi-view inference framework to systematically integrate local context and global knowledge across three views: mention-, entity- and concept-view. The experiment results show that our model achieves competitive performances on both sentence- and document-level relation extraction, which verifies the effectiveness of introducing uncertain knowledge and the multi-view inference framework that we design.

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Published

2021-05-18

How to Cite

Li, B., Ye, W., Huang, C., & Zhang, S. (2021). Multi-view Inference for Relation Extraction with Uncertain Knowledge. Proceedings of the AAAI Conference on Artificial Intelligence, 35(15), 13234-13242. Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/17563

Issue

Section

AAAI Technical Track on Speech and Natural Language Processing II