Information Retrieval System, Information Retrieval Method, Information Retrieval Program, Knowledge Graph Generation System, Knowledge Graph Generation Method, and Knowledge Graph Generation Program

Abstract

【Problem】To provide an information retrieval system using a knowledge graph that accurately represents the logical structure of a sentence. 【Solution】The information retrieval system of the present invention includes a reception means for receiving an input of a question sentence from a user terminal, a graph extraction means for referring to a storage means storing a knowledge graph including hierarchical syntactic relationships for each node and extracting a sub-graph including nodes related to the question sentence from the knowledge graph, a prompt generation means for generating a prompt for causing an AI to generate an answer sentence corresponding to the question sentence by referring to the sub-graph based on the question sentence and the sub-graph, an acquisition means for inputting the generated prompt to the generation AI and acquiring the answer sentence generated by the generation AI, and an output means for outputting the answer sentence acquired by the acquisition means to the user terminal. 【Selected Drawing】Figure 9

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