Improving Semantic Relation Extraction System with Compositional Dependency Unit on Enriched Shortest Dependency Path

  • Duy-Cat CanEmail author
  • Hoang-Quynh Le
  • Quang-Thuy Ha
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11431)


Experimental performance on the task of relation extraction/classification has generally improved using deep neural network architectures. In which, data representation has been proven to be one of the most influential factors to the model’s performance but still has many limitations. In this work, we take advantage of compressed information in the shortest dependency path (SDP) between two corresponding entities to classify the relation between them. We propose (i) a compositional embedding that combines several dominant linguistic as well as architectural features and (ii) dependency tree normalization techniques for generating rich representations for both words and dependency relations in the SDP. We also present a Convolutional Neural Network (CNN) model to process the proposed SDP enriched representation. Experimental results for both general and biomedical data demonstrate the effectiveness of compositional embedding, dependency tree normalization technique as well as the suitability of the CNN model.


Relation extraction Dependency unit Shortest dependency path Convolutional neural network 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Information TechnologyUniversity of Engineering and Technology, Vietnam National University HanoiHanoiVietnam

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