Model and construction method of the ontology of knowledge graph of smart city

Specific to problems such as insufficient data resource sharing and difficulty in implementing artificial intelligence applications in the current construction process of smart cities,based on resource description framework of knowledge graph,ontology knowledge system carrier,and digital twins,a knowledge graph model of smart city with data of people as the core was proposed,and a construction method of ontology and sub-ontology in multi-domain knowledge graph supporting the model was also proposed.The idea of “sky,earth and people” model was innovatively proposed,which will play a positive role in how the data of smart city serve urban residents,how to implement artificial intelligence algorithm models and smart city applications.