Journal of Xidian University ›› 2021, Vol. 48 ›› Issue (6): 75-83.doi: 10.19665/j.issn1001-2400.2021.06.010

• Special Issue:Key Technology of Architecture and Software for Intelligent Embedded Systems • Previous Articles     Next Articles

Novel and efficient algorithm for entity relation extraction with the corpus knowledge graph

HU Daiwang(),JIAO Yiyuan(),LI Yanni()   

  1. School of Computer Science and Technology,Xidian University,Xi’an 710071,China
  • Received:2021-06-30 Online:2021-12-20 Published:2022-02-24
  • Contact: Yanni LI E-mail:hudaiwang@stu.xidian.edu.cn;yiyuan_jiao@stu.xidian.edu.cn;yannili@mail.xidian.edu.cn

Abstract:

Entity relation extraction aims to extract the semantic relation between two entities in a given sentence.Entity relation extraction is a basic and important task in information extraction and natural language processing.Although some good entity relation extraction deep learning algorithms have been presented,how to make full use of corpus information and extract the relationship between entities in a sentence effectively to further improve the accuracy of the model still faces challenges.In this paper,a new entity semantic relation graph is constructed based on the training corpus,which can be extended as the testing goes on.The entity semantic relation graph is used to globally capture the semantic relation correlations between entities from all the sentences in the corpuses.And then,a large number of “other” relations existing in the corpus are selected as negative samples to be trained to improve the classification performance.Finally,equipped with the light pre-trained ALBERT,a graph convolutional network,and the negative sample learning triplet loss,we present a new RE method,which can continuously summarize and perfect the knowledge related to the entity pairs to be extracted,and effectively improve the accuracy of entity relation extraction.Extensive experiments on the SemEval-2010 Task 8 and TACRED benchmark show that our proposed algorithm achieves a better performance than the competitive baselines.

Key words: entity relation extraction, natural language processing, graph neural network

CLC Number: 

  • TP183