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RA-GCN: Relational Aggregation Graph Convolutional Network for Knowledge Graph Completion

Published: 26 May 2020 Publication History

Abstract

Knowledge graphs display various entities and their relationships in the real world based on knowledge representation and can analyze and predict the intrinsic relationship between knowledge embeddings through data mining and information processing, which are widely used in search engines, web analytics and smart recommendation areas. As existing knowledge graph information is continuously created and grown, it is a curial task to determine whether the information in knowledge graph is correct and to complete the missing information. In response to this challenge, the researchers proposed a number of graph convolutional network (GCN)-based models to characterize knowledge graphs. The state-of-the-art model is R-GCN, which can effectively extract features. This paper deeply studies the algorithm ideas and results of the R-GCN model, explores whether the model can be further optimized in entity classification and link prediction, and finally, improves the original model and proposes a relational aggregation graph convolutional network. Specifically, this paper finds that a subset of the set of entities may be directly connected to a central entity. All the entities in this subset possess partially identical attributes. At the same time, the relationships between these entities and the central entity may be similar. These similar attributes and relationships can be abstractly aggregated into virtual entities and virtual relationships, respectively, to better extract the topological relationship features. This paper uses the FB15k dataset to evaluate the performance of the proposed model on knowledge graph completion tasks. The experimental results show that the proposed RA-GCN model achieves a certain level improvement compared with the original model and that it can extract knowledge graph topological relationship characteristics more effectively.

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    ICMLC '20: Proceedings of the 2020 12th International Conference on Machine Learning and Computing
    February 2020
    607 pages
    ISBN:9781450376426
    DOI:10.1145/3383972
    This work is licensed under a Creative Commons Attribution International 4.0 License.

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    Published: 26 May 2020

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    Author Tags

    1. Graph convolutional network
    2. Knowledge graph
    3. Knowledge graph completion

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    • (2023)Comparing methods for drug–gene interaction prediction on the biomedical literature knowledge graph: performance versus explainabilityBMC Bioinformatics10.1186/s12859-023-05373-224:1Online publication date: 30-Jun-2023
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