Information matching method and system based on large language model

The invention discloses an information matching method and system based on a large language model, the method is based on the large language model, and the method comprises the following steps: data preprocessing, vectorization and index construction, large language model application, semantic matching and retrieval, feedback circulation and continuous optimization, and interface integration and deployment. The method has the advantages that retrieval accuracy is improved, accurate matching is achieved, ambiguity and omission caused by traditional keyword matching are reduced, semantic retrieval capacity is enhanced, search results better meet actual requirements of users, retrieval efficiency is improved, rapid and effective information retrieval can be carried out, expansibility and flexibility are achieved, and the method is suitable for popularization and application. The method has the advantages that multiple types of data sources and a flexible query mode are supported, the expandability and universali