A knowledge graph based remanufacturing equipment resource modeling method.

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Background The uncertainty and non-standardization of the remanufacturing process result in multi-source heterogeneity of remanufacturing equipment capabilities and knowledge information, which limits the development of informationization and intelligence in remanufacturing. Methods Therefore, we propose a knowledge graph-based modeling method for Remanufacturing Equipment Resource (RMER) information. By analyzing the categories of remanufacturing equipment resources and integrating resource information such as man, machine, material, method, and environment, a unified remanufacturing equipment information model and service capability information model were constructed. Based on the top-down knowledge graph construction process, the RMER semantic association information of the ontology pattern and data layers was extracted and integrated to construct the RMER knowledge graph. Results In this paper, 18 enterprise texts, 50 experience texts and thesis patent texts were selected as the training set, and 2 enterprise texts, 50 experience texts and thesis patent texts were selected as the test set. After multiple rounds of model training, the accuracy rate of entity information extraction reached 91.4%, which proved the accuracy and effectiveness of the model for entity information document extraction. Conclusions This study provides a unified information foundation for mapping and optimizing the resource capabilities of remanufacturing equipment. It can help remanufacturing enterprises to quickly configure equipment resources, and improve the intelligent and automated management level of RMER.