Fig. 1. Equipment management paradigm with domain KG for general assembly

Fig. 2. Process of constructing the equipment management KG for a general assembly

Fig. 3. Ontology of an equipment management KG built with Protégé

Fig. 4. Structure of the BiLSTM-CRF model

Fig. 5. Structure of the BERT pre-trained model

Fig. 6. The KG storage formats

Fig. 7. Training curves of the models

Fig. 8. Association model of the data tables

Fig. 9. Partial display of the KG

Fig. 10. Examples of information query based on KGs