Research on Construction of Nuclear Technology Knowledge Graph
This paper proposes a construction method of nuclear technology knowledge graph,which solves the problems of fragmentation of nuclear technology knowledge and difficult acquisition channels,and provides users with an intelligent and struc-tured acquisition method.Firstly,the top-down and bottom-up methods are used to construct the mode layer and data layer respec-tively,and the Protégé ontology editing tool is used to construct the mode layer of nuclear technology knowledge graph.The crawler technology is used to extract semi-structured data.The unstructured data of nuclear technology is labeled according to the ME+R+BIESO labeling method.The naming and recognition methods of CRF,BI-LSTM and BI-LSTM-CRF models are used to extract en-tities from the labeled data respectively.Through the experimental results,it is obtained that the effect of BI-LSTM-CRF model on nuclear technology knowledge data is better than the other two models.Then,through knowledge fusion,duplicate and erroneous da-ta are processed to construct the data layer of the nuclear technology knowledge graph.Secondly,Neo4j graph database is used to store knowledge,and the knowledge graph of nuclear technology field is successfully constructed.
国家科技期刊平台
NSTL
万方数据
