Research on Intelligent Question Answering System under Operation and Maintenance Knowledge Graph

At present, many intelligent question answering based on knowledge graphs can answer simple questions, but there is no good solution to complex multi-hop problems. In response to this, relying on the knowledge graph of the operation and maintenance domain, an intelligent question answering system based on the classification strategy and subgraph matching idea is proposed, which can better solve the complex question answering under the knowledge graph intelligent question answering; especially for multi-hop questions.Firstly, the multi-hop question is divided through the classification model, and then the corresponding subgraph is recalled through the entity mention and the multi-hop category, and finally the original question and the candidate subgraph are matched for similarity to obtain the answer to the question. The experimental results show that the system has achieved high accuracy and application value in map question and answer in the field of operation and maintenance.