• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (7): 52-67.doi: 10.3901/JME.2023.07.052

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Research on Unified Modeling Method of Knowledge Graph towards the Full Life Cycle of Decommissioned Electromechanical Products

WU Xiuli, MA Longzhou, XIANG Dong, TANG Ying   

  1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083
  • Received:2022-06-01 Revised:2022-07-29 Online:2023-04-05 Published:2023-06-16

Abstract: To solve the issues of high spatial and temporal dispersion, strong quality uncertainty and weak inter-organizational information correlation in tracing reverse logistics information of retired mechanical and electrical products, a unified data model based on knowledge graph for the full life cycle information of retired mechanical and electrical products is constructed. Firstly, the architecture to build the unified data model is proposed to deal with the data from different organizations, and then it's key technology is discussed. A joint entity relation extraction model based on segmental attention fusion mechanism is developed to jointly extract the entities and relations task in building the knowledge graph, which can effectively solve the overlapping issue of entities and relationships. The model is tested in the standard datasets and the decommissioned electromechanical products datasets and the results show that the proposed model is effective. Finally, a dynamic information traceability system is developed. The knowledge graph realizes the unified data structure of the cross-organization information of retired electromechanical products in the whole life cycle, and provides a strong support for the reverse logistics information traceability of retired electromechanical products.

Key words: decommissioned mechanical and electrical products, full life cycle information traceability, unified data model, knowledge graph, joint extraction of entities and relations

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