Research on Knowledge Graph Application Technology

The development of the Internet has mainly gone through three stages. The first stage can be defined as the era of document interconnection. At this time, the main task of the Internet is to provide corresponding layout content for readers to read. The second stage can be defined as the era of data interconnection. Recently, the main task of the Internet provides an interaction that makes the user not only the reader of the web content, but also the maker of the web content [26]. The third stage can define the era of semantic interconnection, which pays more attention to the Internet. The creator and editor of network knowledge, the network truly becomes the user's understanding and provider of needs. Knowledge graph's ability is to understand its own strong semantics, as well as the openness and interconnectivity of the knowledge graph, makes the vision of the semantic connected era with circumstance as close as possible. The knowledge graph was first proposed in the project released by Google on May 17, 2012.Knowledge graph is not a new technical concept. As early as in 2006, [20], the concept of Semantic Web was mentioned. Nowadays, scholars began to call on the use of ontology model in data to express data implicit semantics. At present, intelligent information service applications are increasingly appearing in all aspects of technology and life, such as intelligent search, intelligent question and answer, personalized recommendation, and companies that have appeared in various fields and are in contact with consumers and users.